Browse free open source C++ System Software and projects below. Use the toggles on the left to filter open source C++ System Software by OS, license, language, programming language, and project status.

  • Add Two Lines of Code. Get Full APM. Icon
    Add Two Lines of Code. Get Full APM.

    AppSignal installs in minutes and auto-configures dashboards, alerts, and error tracking.

    Works out of the box for Rails, Django, Express, Phoenix, and more. Monitoring exceptions and performance in no time.
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  • Ditto Edge Server is a lightweight standalone server for resource-constrained edge environments, based on the core Ditto Edge SDK. Icon
    Ditto Edge Server is a lightweight standalone server for resource-constrained edge environments, based on the core Ditto Edge SDK.

    With Ditto Edge Server, you can join devices as small as a Raspberry Pi to a local mesh network and synchronize data across edge environments.

    Ditto's Edge SDK is the only thing your edge devices need to ensure your application is operational in any environment, regardless of network conditions.
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  • 1
    HP Linux Imaging and Printing

    HP Linux Imaging and Printing

    Hewlett-Packard's Linux imaging and printing software

    The Hewlett-Packard Linux Imaging and Printing Project provides a unified single and multi-function connectivity solution for Linux. For support and help, please visit https://launchpad.net/hplip
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    Downloads: 7,309 This Week
    Last Update:
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  • 2
    Snap7

    Snap7

    32/64 bit multi-platform Ethernet S7 PLC communication suite

    Snap7, through three specialized components: Client and the inedited Server and Partner, allows you to definitively integrate your PC based systems into a PLC automation chain. Designed to transfer large amounts of hi-speed data in industrial facilities, it scales easily, down to small Linux Arm boards such as Raspberry PI. Hi level object oriented wrappers are provided, currently C/C++, .NET/Mono, Pascal, LabVIEW, Python with many source code examples. Very easy to use, a full working server example is not bigger than the “Hello world”. Many projects/makefiles are ready to run to easily rebuild Snap7 in any platform without the need of be a C++ guru. Very detailed documentation provided.
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    Downloads: 927 This Week
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  • 3
    VoIP monitor

    VoIP monitor

    VoIP SIP and SKINNY quality analyzer and packet / audio recording tool

    VoIPmonitor is open source network packet sniffer with commercial frontend for SIP SKINNY MGCP RTP and RTCP VoIP protocols running on linux. VoIPmonitor is designed to analyze quality of VoIP call based on network parameters - delay variation and packet loss according to ITU-T G.107 E-model which predicts quality on MOS scale. Calls with all relevant statistics are saved to MySQL or ODBC database. Optionally each call can be saved to pcap file with either only SIP / SKINNY protocol or SIP/RTP/RTCP/T.38/udptl protocols. VoIPmonitor can also decode audio.
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    Downloads: 836 This Week
    Last Update:
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  • 4
    The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, Webmail, calendaring, and mailing list services.
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    Downloads: 250 This Week
    Last Update:
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  • Business password and access manager solution for IT security teams Icon
    Business password and access manager solution for IT security teams

    Simplify Access, Secure Your Business

    European businesses use Uniqkey to simplify password management, reclaim IT control and reduce password-based cyber risk. All in one super easy-to-use tool.
    Learn More
  • 5
    OpenMQTTGateway

    OpenMQTTGateway

    MQTT gateway for ESP8266, ESP32, Sonoff RF Bridge or Arduino

    OpenMQTTGateway project goal is to concentrate in one firmware different technologies and protocols, decreasing, by the way, the number of physical bridges needed, and hiding the different technologies singularity behind a simple & widespread communication protocol; MQTT. MQTT gateway for ESP8266, ESP32, Sonoff RF Bridge or Arduino with bidirectional 433mhz/315mhz/868mhz, Infrared communications, BLE, Bluetooth, beacons detection, mi flora, mi jia, LYWSD02, LYWSD03MMC, Mi Scale, TPMS, BBQ thermometer compatibility, SMS & LORA. OpenMQTTGateway supports very mature technologies like basic 433mhz/315mhz protocols & infrared (IR) so you can make your old dumb devices "smart" and avoid throwing them away. These devices also have the advantage of having a lower cost compared to Zwave or more sophisticated protocols. OMG also supports up-to-date technologies like Bluetooth Low Energy (BLE) or LORA.
    Downloads: 17 This Week
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  • 6
    WinLIRC
    WinLIRC, the Windows port of the Linux Infrared Remote Control package. Control your computer via remote!
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    Downloads: 74 This Week
    Last Update:
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  • 7
    This project implements a simple STUN server and client on Windows, Linux, and Solaris. The STUN protocol (Simple Traversal of UDP through NATs) is described in the IETF RFC 3489, available at http://www.ietf.org/rfc/rfc3489.txt
    Downloads: 59 This Week
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  • 8
    aMSN

    aMSN

    MSN compatible messenger application

    A very nice MSN compatible messenger application, aMSN Messenger is a multiplatform MSN messenger clone. Works pretty much like its Windows based counterpart. Perfect for keeping in touch with those friends who have not yet seen the light. Works on linux
    Downloads: 55 This Week
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  • 9
    DMX Library for Arduino

    DMX Library for Arduino

    DMX Library and usage examples for Arduino

    This Library includes a DMX Master, DMX Slave and various examples on how to use its implementation. This projects has been started to support the use of our Shielded DMX / RDM Shield for Arduino. The library is made available under the GNU Lesser General Public License If you would like to make contributions to the source code feel free to contact the project admin
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    Downloads: 57 This Week
    Last Update:
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  • The complete IT asset and license management platform Icon
    The complete IT asset and license management platform

    Gain full visibility and control over your IT assets, licenses, usage and spend in one place with Setyl.

    The platform seamlessly integrates with 100+ IT systems, including MDM, RMM, IDP, SSO, HR, finance, helpdesk tools, and more.
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  • 10
    udt
    UDT: UDP-based Data Transfer Protocol
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    Downloads: 42 This Week
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  • 11
    GameNetworkingSockets

    GameNetworkingSockets

    Reliable & unreliable messages over UDP

    GameNetworkingSockets is a basic transport layer for games. A reliability layer significantly more sophisticated than a basic TCP-style sliding window. It is based on the "ack vector" model from DCCP (RFC 4340, section 11.4) and Google QUIC and discussed in the context of games by Glenn Fiedler. The basic idea is for the receiver to efficiently communicate to the sender the status of every packet number (whether or not a packet was received with that number). By remembering which segments were sent in each packet, the sender can deduce which segments need to be retransmitted. Encryption. AES-GCM-256 per packet, Curve25519 for key exchange and cert signatures. The details for shared key derivation and per-packet IV are based on the design used by Google's QUIC protocol. This library has shipped on consoles, mobile platforms, and non-Steam stores, and has been used to facilitate cross-platform connectivity. Contact us to get access to the code.
    Downloads: 7 This Week
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  • 12

    PeerGuardian

    PeerGuardian - a privacy oriented firewall application

    PeerGuardian is a privacy oriented firewall application. It blocks connections to and from hosts specified in huge blocklists (thousands or millions of IP ranges). Its origin seeds in targeting aggressive IPs while you use P2P. PeerGuardian Linux: Not developed actively anymore. Team might still be around. Some unreleased changes on git. Outdated technology. Peerguardian OS X: Not developed anymore. We've lost contact with the OS X developer. PeerGuardian Windows: Not developed anymore. It's highly recommended to use PeerBlock instead, which is a continuation of PeerGuardian's development in Windows, with bug fixes and support for Windows Vista and Windows 7. Collaboration with peerblock.com is welcome! PeerGuardian is an open project. Not only is its source code open for you to read, use, and modify - but the project is open for you to join and contribute in any form (code, documentation, bug reports, web and support).
    Downloads: 26 This Week
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  • 13
    ESP32-Paxcounter

    ESP32-Paxcounter

    Wifi & BLE driven passenger flow metering with cheap ESP32 boards

    Wifi & Bluetooth driven, LoRaWAN enabled, battery-powered mini Paxcounter built on cheap ESP32 LoRa IoT boards. Paxcounter is an ESP32 MCU-based device for metering passenger flows in real time. It counts how many mobile devices are around. This gives an estimation of how many people are around. Paxcounter detects Wifi and Bluetooth signals in the air, focusing on mobile devices by evaluating their MAC addresses. The intention of this project is to do this without intrusion in privacy: You don't need to track people-owned devices if you just want to count them. Therefore, Paxcounter does not persistently store MAC addresses and does no kind of fingerprinting the scanned devices. Data can either be stored on a local SD-card, transferred to the cloud using LoRaWAN network or MQTT over TCP/IP, or transmitted to localhost using serial (SPI) interface. LED Matrix display (similar to this 64x16 model, can be ordered on Aliexpress). SD-card (see section SD-card here) for logging pax data.
    Downloads: 5 This Week
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  • 14
    PJON

    PJON

    Experimental, arduino-compatible, multi-master, multi-media network

    PJON® (Padded Jittering Operative Network) is an experimental, Arduino-compatible, multi-master, multi-media, software-defined network protocol that can be easily cross-compiled on many microcontrollers and real-time operative systems like ATtiny, ATmega, SAMD, ESP8266, ESP32, STM32, Teensy, Raspberry Pi, Zephyr, Linux, Windows x86, Apple and Android. PJON operates on a wide range of media, data links and existing protocols like PJDL, PJDLR, PJDLS, Serial, RS485, USB, ASK/FSK, LoRa, UDP, TCP, MQTT and ESPNOW. PJON is an experimental network protocol stack crafted in 10 years of research and experimentation. It was originally developed as an open-source alternative to i2c and 1-Wire but during development, its scope and features have been extended to cover use cases where IP is generally applied. PJON has been engineered to have a variable footprint (4.2-8.2 kB program memory) and overhead (5-35 bytes per packet) depending on its configuration.
    Downloads: 5 This Week
    Last Update:
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  • 15
    RabbitRemoteControl

    RabbitRemoteControl

    Remote control. Support VNC, RDP, Terminal, SSH, TELNET etc

    Rabbit Remote Control is a open-source, cross-platform, multi-protocol remote control software. Allows you to use any device and system in anywhere and remotely manage any device and system in any way. Its goal is to be simple, convenient, security and easy to use, improving work efficiency. It include remote desktop, remote control, file transfer(FTP, SFTP), terminal, remote terminal(SSH, TELNET), player, network tools etc functions. This is only a read-only mirror repository. Main repository: https://github.com/KangLin/RabbitRemoteControl
    Downloads: 73 This Week
    Last Update:
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  • 16
    SerialPortAssistant
    Serial port assistant This is only a read-only mirror repository. Main repository: https://github.com/KangLin/SerialPortAssistant
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    Downloads: 124 This Week
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  • 17
    WiFiManager

    WiFiManager

    WiFi Connection manager with web captive portal

    Espressif ESPx WiFi Connection manager with fallback web configuration portal. The configuration portal is of the captive variety, so on various devices it will present the configuration dialogue as soon as you connect to the created access point. When your ESP starts up, it sets it up in Station mode and tries to connect to a previously saved Access Point. If this is unsuccessful (or no previous network saved) it moves the ESP into Access Point mode and spins up a DNS and WebServer (default ip 192.168.4.1). Using any wifi enabled device with a browser (computer, phone, tablet) connect to the newly created Access Point. Because of the Captive Portal and the DNS server you will either get a 'Join to network' type of popup or get any domain you try to access redirected to the configuration portal. ESP will try to connect. If successful, it relinquishes control back to your app. If not, reconnect to AP and reconfigure.
    Downloads: 3 This Week
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  • 18
    aMule AdunanzA
    aMule AdunanzA e' un progetto volto a rendere accessibile la rete Kademlia anche all'utenza Fastweb, grazie alla patch AdunanzA. Questo in specifico per utenti Linux e Mac OS X Per riferimenti alla community italiana http://forum.adunanza.net
    Downloads: 18 This Week
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  • 19
    A Windows Installer Database To XML Bi-Directional Converter. The command line tool msi2xml converts Windows Installer Databases (.msi) to text based XML files. The complementary tool xml2msi reconstructs the .msi from the XML file.
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    Downloads: 31 This Week
    Last Update:
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  • 20
    YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!
    Downloads: 10 This Week
    Last Update:
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  • 21
    WiFi Password Recovery

    WiFi Password Recovery

    A free utility to recover the passwords of wireless networks

    WiFi Password Recovery is a free utility to recover the passwords of the WiFi networks saved on your computer. For example if you forgot the password of a WiFi network (which you have entered in the past), you can easily recover it thanks to this tool. WiFi Password Recovery provides a very simple user interface which shows also other informations (SSID, Interface, Security type, Encryption algorithm) for each wireless network. The program is able to recover the passwords of wireless networks which use the following security types: WEP, WPA, WPA-PSK, WPA2, WPA2-PSK.* GitHub Repository: https://github.com/EvolSoft/WiFi-Password-Recovery *Note: On Windows XP the passwords of WiFi networks using WPA security will be shown as 64 HEX digits. You can use these characters as password to connect to the wireless network anyway.
    Downloads: 41 This Week
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  • 22
    Swish
    Access your remote files over SFTP directly from Windows Explorer and 'My Computer'.
    Downloads: 7 This Week
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  • 23

    plptools

    PROJECT MOVED TO https://github.com/plptools/plptools

    THIS PROJECT HAS MOVED TO GITHUB! Libraries and utilities for communication between Unix and EPOC PDAs (Psion Series 3, Psion Series 5 etc.).
    Downloads: 28 This Week
    Last Update:
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  • 24
    NFS Server

    NFS Server

    NFS Server is an application for Windows - supporting protocol NFS 2

    NFS Server is an application for Microsoft Windows. It's an server supporting protocol NFS 2
    Downloads: 21 This Week
    Last Update:
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  • 25
    Small HTTP server

    Small HTTP server

    Universal server

    It is not only a web server, it is also Mail server, DNS server, FTP server, Proxy server, VPN server and client... All in one! This program will help you to open all the possibilities Internet can offer for your company - public site, provide Internet access and personal mailboxes for each employee! HTTP server. Server Side Includes. Regular expression in SSI. CGI interface for scripts (Executable files; Perl,PHP, or another external interpreters) ISAPI interface. Virtual hosts and directories Mail POP3 server. SMTP server. FTP server HTTP proxy server DNS server DHCP server HTTP TLS VPN server
    Downloads: 19 This Week
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