Page 17 | Compare Business Software for JavaScript: April 2026 Reviews & Comparison

Arize Phoenix

Arize AI

Phoenix is an open-source observability library designed for experimentation, evaluation, and troubleshooting. It allows AI engineers and data scientists to quickly visualize their data, evaluate performance, track down issues, and export data to improve. Phoenix is built by Arize AI, the company behind the industry-leading AI observability platform, and a set of core contributors. Phoenix works with OpenTelemetry and OpenInference instrumentation. The main Phoenix package is arize-phoenix. We offer several helper packages for specific use cases. Our semantic layer is to add LLM telemetry to OpenTelemetry. Automatically instrumenting popular packages. Phoenix's open-source library supports tracing for AI applications, via manual instrumentation or through integrations with LlamaIndex, Langchain, OpenAI, and others. LLM tracing records the paths taken by requests as they propagate through multiple steps or components of an LLM application.

Starting Price: Free

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Kakoune

Kakoune is a highly efficient, modal text editor that focuses on real-time feedback and powerful, intuitive multi-selection capabilities. Inspired by Vim but offering its own distinct approach to modal editing, Kakoune prioritizes a selection-based workflow that makes text manipulation feel natural and fluid. Instead of commands operating on cursors, commands operate on selections, allowing users to edit and navigate with precision and speed. Kakoune features robust multi-caret editing, context-aware autocompletion, and extensive language support, with performance optimized for working with large files and complex codebases. Designed to be scriptable and extendable with shell commands, Kakoune integrates smoothly with UNIX tools, giving users flexibility in customization. Known for its responsiveness and adaptability, Kakoune is ideal for developers who prefer a keyboard-driven interface and appreciate real-time, immediate feedback in their editing workflow.

Starting Price: Free

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PaizaCloud

On PaizaCloud Cloud IDE, you can operate Linux servers in your browser. You can manage and edit files, run commands, or start a web server/database server, all in a browser alone. You don't need to use troublesome commands to log in, edit files, or upload files anymore. You can operate Linux servers on the cloud just like a computer in front of you. Your new Linux server environment will be set up in just 3 seconds. You can copy an existing server environment, and you can also freely operate multiple Linux servers. Because the new server is set up instantly, you can challenge installing or developing software without worrying about breaking down. All you need is a browser to use your workspace environment from any PC or Mac. You can use the same workspace environment from anywhere without always having to carry the same computer around. For programming schools, coding boot camps, universities, and colleges, students can use the same development environment at school and at home.

Starting Price: $9.80 per month

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Traceloop

Traceloop is a comprehensive observability platform designed to monitor, debug, and test the quality of outputs from Large Language Models (LLMs). It offers real-time alerts for unexpected output quality changes, execution tracing for every request, and the ability to gradually roll out changes to models and prompts. Developers can debug and re-run issues from production directly in their Integrated Development Environment (IDE). Traceloop integrates seamlessly with the OpenLLMetry SDK, supporting multiple programming languages including Python, JavaScript/TypeScript, Go, and Ruby. The platform provides a range of semantic, syntactic, safety, and structural metrics to assess LLM outputs, such as QA relevancy, faithfulness, text quality, grammar correctness, redundancy detection, focus assessment, text length, word count, PII detection, secret detection, toxicity detection, regex validation, SQL validation, JSON schema validation, and code validation.

Starting Price: $59 per month

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Northflank

The self-service developer platform for your apps, databases, and jobs. Start with one workload, and scale to hundreds on compute or GPUs. Accelerate every step from push to production with highly configurable self-service workflows, pipelines, templates, and GitOps. Securely deploy preview, staging, and production environments with observability tooling, backups, restores, and rollbacks included. Northflank seamlessly integrates with your preferred tooling and can accommodate any tech stack. Whether you deploy on Northflank’s secure infrastructure or on your own cloud account, you get the same exceptional developer experience, and total control over your data residency, deployment regions, security, and cloud expenses. Northflank leverages Kubernetes as an operating system to give you the best of cloud-native, without the overhead. Deploy to Northflank’s cloud for maximum simplicity, or connect your GKE, EKS, AKS, or bare-metal to deliver a managed platform experience in minutes.

Starting Price: $6 per month

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Snap Code

Welcome to Snap Code, where coding is simplified like never before. Our AI-powered platform allows you to convert images into code in just seconds. Speed up your coding workflow by generating clean, ready-to-use code in seconds. Streamline your development tasks with AI-assisted code generation. Gain full access to all generated code, with the ability to modify, export, or implement changes as needed, giving you complete control over your development process. Our platform supports a wide range of front-end languages along with popular UI libraries. Not just code, use AI to generate images that fit perfectly with your project’s needs. Convert your ideas into visuals with our intelligent image generation feature. Update and optimize the generated code using advanced AI algorithms. Make modifications effortlessly and watch as the AI enhances your code for better performance. Convert images to Bootstrap code, ensuring responsive designs for your web projects.

Starting Price: $5 per month

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Early

EarlyAI

Early is an AI-driven tool designed to automate the generation and maintenance of unit tests, enhancing code quality and accelerating development processes. By integrating with Visual Studio Code (VSCode), Early enables developers to produce verified and validated unit tests directly from their codebase, covering a wide range of scenarios, including happy paths and edge cases. This approach not only increases code coverage but also helps identify potential issues early in the development cycle. Early supports TypeScript, JavaScript, and Python languages, and is compatible with testing frameworks such as Jest and Mocha. The tool offers a seamless experience by allowing users to quickly access and refine generated tests to meet specific requirements. By automating the testing process, Early aims to reduce the impact of bugs, prevent code regressions, and boost development velocity, ultimately leading to the release of higher-quality software products.

Starting Price: $19 per month

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16x Prompt

Manage source code context and generate optimized prompts. Ship with ChatGPT and Claude. 16x Prompt helps developers manage source code context and prompts to complete complex coding tasks on existing codebases. Enter your own API key to use APIs from OpenAI, Anthropic, Azure OpenAI, OpenRouter, or 3rd party services that offer OpenAI API compatibility, such as Ollama and OxyAPI. Using API avoids leaking your code to OpenAI or Anthropic training data. Compare the code output of different LLM models (for example, GPT-4o & Claude 3.5 Sonnet) side-by-side to see which one is the best for your use case. Craft and save your best prompts as task instructions or custom instructions to use across different tech stacks like Next.js, Python, and SQL. Fine-tune your prompt with various optimization settings to get the best results. Organize your source code context using workspaces to manage multiple repositories and projects in one place and switch between them easily.

Starting Price: $24 one-time payment

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Pythagora

Pythagora is an AI-powered platform designed to help developers build full-stack web applications with minimal coding effort. It integrates a suite of AI agents that collaborate to write code, review it, build tests, debug, and deploy apps. By automating many tasks involved in the software development lifecycle, Pythagora enables developers to work more efficiently and accelerate the development process. The platform supports frontend development in React and backend in Node.js, with Python support coming soon. With its ability to handle multiple aspects of development, Pythagora is ideal for quickly building both MVPs and production-ready applications. It simplifies the creation of scalable and maintainable applications, making it suitable for both small startups and large enterprises.

Starting Price: $49/month

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Agentplace

Agentplace is a platform where AI apps and websites are built directly on top of an AI model. No coding knowledge is required. Agentplace lets you create AI websites and apps. Now, ChatGPT has become your interactive and dynamic site, capable of answering questions, selling products, and delivering services. It leverages AI's adaptability, common sense, knowledge, and voice. You can program it entirely with text. The website's interface changes based on what users say or do. Instead of fixed pages, UI elements appear, update, or hide in response to user needs. For example, a form can add more fields as needed, or a product page can show different details based on user questions. Users can talk to your website like they would with ChatGPT. They can ask questions, get information, or complete tasks using voice. The site responds both verbally and visually, making it accessible while driving or cooking.

Starting Price: $29 per month

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Qwen2.5-Coder

Alibaba

Qwen2.5-Coder-32B-Instruct has become the current SOTA open source code model, matching the coding capabilities of GPT-4o. While demonstrating strong and comprehensive coding abilities, it also possesses good general and mathematical skills. As of now, Qwen2.5-Coder has covered six mainstream model sizes to meet the needs of different developers. We explore the practicality of Qwen2.5-Coder in two scenarios, including code assistants and artifacts, with some examples showcasing the potential applications of Qwen2.5-Coder in real-world scenarios. Qwen2.5-Coder-32B-Instruct, as the flagship model of this open source release, has achieved the best performance among open source models on multiple popular code generation benchmarks and has competitive performance with GPT-4o. Code repair is an important programming skill. Qwen2.5-Coder-32B-Instruct can help users fix errors in their code, making programming more efficient.

Starting Price: Free

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SvelteKit

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. It addresses common development challenges by providing solutions for routing, server-side rendering, data fetching, service workers, TypeScript integration, and more. SvelteKit apps are server-rendered by default, offering excellent first-load performance and SEO benefits, but can transition to client-side navigation to enhance user experience. The framework is designed to grow with developers, allowing them to start simple and add new features as needed. SvelteKit leverages Vite for a fast and feature-rich development experience, including hot module replacement. In short, Svelte is a way of writing user interface components, like a navigation bar, comment section, or contact form, that users see and interact with in their browsers. The Svelte compiler converts your components to JavaScript that can be run to render the HTML for the page and to CSS that styles the page.

Starting Price: Free

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StartFast

StartFast is a minimalistic SaaS starter kit designed for rapid setup and ease of use, enabling developers and entrepreneurs to launch their projects swiftly. Built with Next.js 14, Supabase, TailwindCSS, and Stripe, it offers a clean codebase that eliminates unnecessary complexities, allowing users to focus on their core ideas. Key features include passwordless authentication, simple Stripe Checkout integration for straightforward payments, and a flexible token-based usage model that supports modern pay-per-use pricing structures. The platform emphasizes simplicity, with a database schema comprising just four lines, and comprehensive documentation that makes it accessible even to novices. StartFast provides both free and pro versions; the pro version includes AI-powered tools for generating SEO-optimized blog posts and landing pages, on-page SEO analysis, keyword research integration, and centralized configuration for easy customization.

Starting Price: $99 per month

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Gravity

The SaaS boilerplate handles the complex, boring code like payments and authentication, while you build fun features that generate revenue. Download the full SaaS boilerplate codebase from Github. Follow the setup wizard to have a working SaaS app in minutes. Start adding your features then launch your app at warp speed. Eliminate time-consuming, complex boilerplate code. Save 400+ coding hours. Build a profitable SaaS business fast. Focus on features that matter, ones customers will pay for. Save thousands of dollars and get access to a professional SaaS development support network. 20 years of commercial Javascript experience. Built a tech startup to $5,000,000 in sales. Served on startup boards as a technical advisor. Mentored hundreds of startups on accelerators. Spoken at development conferences across the world. Both the front-end React client and back-end Node.js server are written in Javascript.

Starting Price: $417 per month

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NextAuth.js

NextAuth.js is an open source authentication solution tailored for Next.js applications, offering seamless integration with popular services like Google, Facebook, Auth0, and Apple. It supports various authentication methods, including OAuth 1.0 & 2.0, email/passwordless sign-ins, and custom username/password systems. Designed for flexibility, NextAuth.js operates efficiently in serverless environments and supports multiple databases such as MySQL, PostgreSQL, MSSQL, and MongoDB, allowing developers to choose between database sessions or JSON Web Tokens (JWT). Security features include signed, prefixed, server-only cookies, HTTP POST with CSRF token validation, and encrypted JWTs using JWS/JWE/JWK standards. The platform facilitates easy setup, enabling developers to add authentication in minutes with minimal configuration. Comprehensive documentation and a supportive community further enhance its accessibility for developers seeking a robust authentication system.

Starting Price: Free

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Auth.js

Auth.js is an open-source authentication library designed to integrate seamlessly with modern JavaScript frameworks, providing a flexible and secure authentication experience. It supports various authentication methods, including OAuth (e.g., Google, GitHub), credentials, and WebAuthn, allowing developers to choose the most suitable approach for their applications. Auth.js is compatible with multiple frameworks, such as Next.js, SvelteKit, Express, Qwik, and SolidStart, enabling developers to implement authentication across different platforms. The library offers built-in support for popular databases like Prisma, Drizzle ORM, Supabase, Firebase, and TypeORM, facilitating user data management. Security features include signed cookies, CSRF token validation, and encrypted JSON Web Tokens (JWTs), ensuring robust protection for user data. Auth.js is designed to operate efficiently in serverless environments and provides comprehensive documentation and examples.

Starting Price: Free

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Basejump

Basejump is an open-source SaaS starter kit that enhances Supabase applications by adding authentication, personal and team accounts, member permissions, and subscription billing management through Stripe. Developers can integrate Basejump into existing projects with a single migration file, utilizing Supabase libraries across various programming languages such as JavaScript, Python, Go, and Swift. The platform offers customizable React components built on shadcn and Tailwind CSS, facilitating rapid deployment with full control over the user interface. Basejump leverages Supabase's Row Level Security (RLS) policies to enforce data access restrictions based on user roles, ensuring secure and efficient permission management. All data is stored within the user's Supabase database, allowing for extensive customization and extension with additional tables as needed. This flexibility enables developers to use Basejump as a standalone authentication and billing system.

Starting Price: Free

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Nextacular

Nextacular is an open source starter kit designed to expedite the development of full-stack, multi-tenant SaaS applications. Built with modern technologies such as Next.js, Tailwind CSS, and Prisma, it offers a suite of out-of-the-box features to streamline the development process. These features include authentication via magic links and social logins through NextAuth, database integration with relational databases like PostgreSQL and MySQL, and multi-tenancy support to serve multiple customers across different subdomains or custom domains using a single unified codebase. Nextacular also provides teams and workspaces functionality, allowing users to invite team members to collaborate within workspaces. The platform includes a customizable landing page, billing and subscription management through Stripe integration, and simple design components built with Tailwind CSS that can be configured according to your design system.

Starting Price: Free

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Veloz

Veloz is a versatile SaaS boilerplate designed to accelerate the development of software-as-a-service applications by offering a collection of pre-built templates and starter kits. Unlike traditional boilerplates that confine developers to a specific framework or language, Veloz provides the flexibility to select preferred technologies across various components, including frontend frameworks like Next.js, React, and Vue.js, as well as backend services, databases, payment gateways, mailing systems, authentication methods, and SEO tools. This adaptability enables developers to scaffold projects effortlessly, integrate necessary services, and focus on innovation rather than setup. Veloz's architecture supports responsive interface creation with ready-made components, seamless integration with chosen frontend frameworks, performance optimization through intelligent caching and lazy loading, and built-in state management for complex applications.

Starting Price: $199 one-time payment

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Flowbite

Flowbite is an open-source library of interactive UI components built on top of Tailwind CSS, designed to expedite web development by providing a comprehensive set of pre-designed elements. It offers over 56 types of components, including buttons, alerts, breadcrumbs, pagination, and navbars, as well as interactive elements like dropdowns, modals, and tooltips, which are enhanced by custom JavaScript for added interactivity. Developers can integrate Flowbite into existing Tailwind CSS projects via npm or CDN, and it supports various frameworks such as React, Vue.js, Angular, and Next.js. The library also includes a Figma design system, enabling designers to prototype and design applications before development. For those seeking advanced features, Flowbite offers a Pro version with additional components and templates. The ecosystem is further enriched by Flowbite Blocks, providing over 450 website sections and advanced UI components built with Tailwind CSS.

Starting Price: $289 one-time payment

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ShipFlask

ShipFlask is a comprehensive Python-Flask boilerplate designed to expedite the development of SaaS applications by providing essential integrations and functionalities out of the box. It features secure user authentication through Auth0, enabling seamless sign-in and account creation processes. Payment processing and subscription management are facilitated via Stripe's API, allowing for efficient handling of transactions and billing. The platform incorporates an OpenAI-powered chatbot, enhancing user engagement with conversational AI capabilities. Transactional emails are managed through services like MailerSend or Postmark, ensuring reliable communication with users. Data storage is handled by a hosted MongoDB database, offering a scalable solution for application data. Additionally, ShipFlask supports dynamic content rendering using AJAX, providing flexibility in front-end development.

Starting Price: $149 one-time payment

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daisyUI

DaisyUI is a Tailwind CSS component library that enhances development efficiency by providing semantic class names for UI components, such as cards and toggles. This approach reduces the need to write extensive utility classes, resulting in cleaner and more maintainable HTML. DaisyUI is built on top of Tailwind CSS, allowing developers to customize components using Tailwind's utility classes. It operates as a pure CSS plugin without JavaScript dependencies, ensuring compatibility across various JavaScript frameworks. Installation is straightforward, and it supports unlimited themes through customizable color names that utilize CSS variables, facilitating features like dark mode without additional class names. daisyUI is built on top of Tailwind CSS so you can customize everything using utility classes. daisyUI is a plugin for Tailwind CSS. It works on all JS frameworks and doesn't need a JS bundle file.

Starting Price: $49 one-time payment

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SaaS Hammer

SaaS Hammer is a comprehensive Django SaaS template designed to accelerate product development by integrating Django with Hotwire, thereby enhancing productivity and enabling developers to focus on perfecting their products. It offers a modern frontend development workflow utilizing Webpack and SWC (Speedy Web Compiler), complete with live reload functionality for immediate feedback during development. The template incorporates Tailwind CSS for crafting clean user interfaces and provides built-in support for TypeScript. SaaS Hammer includes a component library featuring reusable UI elements such as buttons, modals, tabs, date-time widgets, select widgets, rich text editors, and various chart types, facilitating rapid UI development. Content management, integrates Wagtail CMS, allowing for the swift creation and updating of pages without direct template modifications. The template supports user authentication with features like signup, email confirmation, and more.

Starting Price: $299 one-time payment

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Trigger.dev

Write normal async code and we'll handle the rest, from deployment to elastic scaling. No timeouts, real-time monitoring, and zero infrastructure to manage. Trigger.dev is an open source platform and SDK that enables developers to create long-running background jobs without timeouts, directly within their existing codebase. It supports JavaScript and TypeScript, allowing for the writing of reliable asynchronous code that integrates seamlessly with existing workflows. The platform offers features such as API integrations, webhooks, scheduling, delays, and control over concurrency, all without the need to manage servers. Trigger.dev provides built-in monitoring and observability tools, including real-time run status updates, advanced filtering, and custom alerts via email, Slack, or webhooks. Its architecture ensures elastic scaling to handle varying workloads efficiently. Developers can deploy tasks using a command-line interface, with the platform handling scaling management.

Starting Price: $10 per month

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OpenFGA

The Linux Foundation

OpenFGA is an open source authorization solution that enables developers to implement fine-grained access control using a user-friendly modeling language and APIs. Inspired by Google's Zanzibar paper, it supports various access control models, including Relationship-Based Access Control (ReBAC), Role-Based Access Control (RBAC), and Attribute-Based Access Control (ABAC). OpenFGA offers SDKs for multiple programming languages, such as Java, .NET, JavaScript, Go, and Python, facilitating seamless integration into diverse applications. The platform is designed for high performance, capable of processing authorization checks in milliseconds, making it suitable for projects ranging from small startups to large enterprises. Operating under the Cloud Native Computing Foundation (CNCF) as a sandbox project, OpenFGA emphasizes transparency and community collaboration, inviting contributions to its development and governance.

Starting Price: Free

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Flyde

Built on a functional-reactive foundation, Flyde enables more than simple input/output flows. It supports everything you'd expect from a textual-based language; recursions, loops, and conditionals. Unlock new ways to think about, and debug your programs. Have an always-correct diagram of your program. Flyde’s flow-based, visual approach makes asynchronous and concurrent tasks simpler and more intuitive. In Flyde, nothing is hidden. From node implementation to runtime code. Easily access the code behind each node in Flyde’s standard library. Everything needed to run Flyde flows is open source and MIT-licensed. Create Flyde flows right from your IDE. Wrap existing TypeScript code in a Flyde node and use it in your flows. Run flows from existing TypeScript code, from arbitrary CLI scripts to HTTP request handlers, and even front-end code. Flows can be version-controlled, and be part of CI/CD pipelines, just like regular text-based code.

Starting Price: Free

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SVAR UI

SVAR

SVAR offers a collection of open-source, customizable UI components designed to simplify and enhance web application development. Compatible with React, Svelte, and Vue, SVAR components include feature-rich DataGrid for managing tabular data, interactive Gantt Chart for visualizing project timelines, a robust File Manager, and a rich UI library of form controls. With a focus on flexibility, performance, and responsiveness, SVAR UI equips you with the advanced tools needed to build modern, data-driven web apps efficiently. All components are easy customizable, blazing fast and well-documented.

Starting Price: $0

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Cline

Cline AI Coding Agent

Autonomous coding agent right in your IDE, capable of creating/editing files, running commands, using the browser, and more with your permission every step of the way. Cline can handle complex software development tasks step-by-step. With tools that let him create & edit files, explore large projects, use the browser, and execute terminal commands (after you grant permission), he can assist you in ways that go beyond code completion or tech support. While autonomous AI scripts traditionally run in sandboxed environments, this extension provides a human-in-the-loop GUI to approve every file change and terminal command, providing a safe and accessible way to explore the potential of agentic AI.

Starting Price: Free

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Defang

Defang is a developer-centric platform that simplifies the process of developing, deploying, and debugging cloud applications. By leveraging AI-assisted tooling, Defang enables developers to swiftly transition from an idea to a deployed application on their preferred cloud provider. The platform supports multiple programming languages, including Go, JavaScript, and Python, allowing developers to start with sample projects or generate project outlines using natural language prompts. With a single command, Defang builds and deploys applications, handling configurations for computing, storage, load balancing, networking, logging, and security. The Defang Command Line Interface (CLI) facilitates interactions with the platform, offering installation options via shell scripts, Homebrew, Winget, Nix, or direct download. Developers can define services using compose.yaml files, which Defang utilizes to deploy applications to the cloud.

Starting Price: $10 per month

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Duckly

Duckly enables you to talk and share your code in real time with developers using any IDE. Duckly is an IDE plugin that facilitates real-time code collaboration among developers using different integrated development environments. It enables users to share code, terminal sessions, and local servers, while also providing audio and video communication directly within the IDE. All connections are peer-to-peer and end-to-end encrypted, ensuring secure collaboration. By integrating these features, Duckly streamlines pair programming, code reviews, and team collaboration, enhancing productivity and reducing the need for multiple external tools. Talk with audio, and video and share your screen directly inside of your IDE. Share your code in real time with people using a different IDE than you. Share your local server with your team and let them see the changes in real time. All connections are peer-to-peer and end-to-end encrypted.

Starting Price: $6 per month

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Business Software for JavaScript - Page 17

Top Software that integrates with JavaScript as of April 2026 - Page 17

Arize Phoenix

Kakoune

PaizaCloud

Traceloop

Northflank

Snap Code

Early

16x Prompt

Pythagora

Agentplace

Qwen2.5-Coder

SvelteKit

StartFast

Gravity

NextAuth.js

Auth.js

Basejump

Nextacular

Veloz

Flowbite

ShipFlask

daisyUI

SaaS Hammer

Trigger.dev

OpenFGA

Flyde

SVAR UI

Cline

Defang

Duckly