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

  • The most advanced C and C++ source code analyzer Icon
    The most advanced C and C++ source code analyzer

    Combining the benefits of static and dynamic source code analysis to deliver the most advanced & exhaustive code verification tool.

    TrustInSoft Analyzer is a C and C++ source code analyzer powered by formal methods, mathematical & logical reasonings that allow for exhaustive analysis of source code. This analysis can be run without false positives or false negatives, so that every real bug in the code is found. Developers receive several benefits: a user-friendly graphical interface that directs developers to the root cause of bugs, and instant utility to expand the coverage of their existing tests. Unlike traditional source code analysis tools, TrustInSoft’s solution is not only the most comprehensive approach on the market but is also progressive, instantly deployable by developers, even if they lack experience with formal methods, from exhaustive analysis up to a functional proof that the software developed meets specifications.
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  • Pylon is an All-in-one B2B Support Platform for modern B2B businesses. Icon
    Pylon is an All-in-one B2B Support Platform for modern B2B businesses.

    Pylon is a modern support system that integrates with all B2B channels like Slack and Team.

    We bring together everything a post-sales teams team needs including a ticketing system, B2B omnichannel integrations (Slack Connect, Microsoft Teams), modern chat widget, knowledge base, AI support bot, account management, customer marketing, and more.
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  • 1
    pdfcrack is a command line, password recovery tool for PDF-files.
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    Downloads: 361 This Week
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  • 2
    xrdp

    xrdp

    An open source RDP server

    xrdp provides a graphical login to remote machines using RDP (Microsoft Remote Desktop Protocol). xrdp accepts connections from a variety of RDP clients: FreeRDP, rdesktop, NeutrinoRDP and Microsoft Remote Desktop Client (for Windows, macOS, iOS and Android). As Windows-to-Windows Remote Desktop can, xrdp supports not only graphics remoting but also two-way clipboard transfer (text, bitmap, file), audio redirection, drive redirection (mount local client drives on a remote machine). Connect to a Linux desktop using RDP from anywhere (requires xorgxrdp Xorg module). Reconnect to an existing session. Session resizing (both on-connect and on-the-fly). RDP/VNC proxy (connect to another RDP/VNC server via xrdp). xrdp primarily targets GNU/Linux operating system. x86 (including x86-64) and ARM processors are most mature architecture to run xrdp on. Most Linux distributions should distribute the latest release of xrdp in their repository.
    Downloads: 57 This Week
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  • 3
    FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
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    Downloads: 210 This Week
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  • 4
    The USB/IP Project
    The USB/IP Project aims to develop a general USB device sharing system over IP network. To share USB devices between computers with their full functionality, USB/IP encapsulates USB I/O requests into IP packets and transmits them between computers.
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    Downloads: 154 This Week
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  • Streamline Hiring with Skill Assessments Icon
    Streamline Hiring with Skill Assessments

    Say goodbye to hiring guesswork. Use Canditech’s job simulation tests to assess real-world skills and make data-driven decisions.

    Canditech offers innovative, cheat-proof skill assessments and job simulations to transform your hiring process. From technical skills to soft skills, we help you assess candidates on actual job performance. With over 500 customizable tests and powerful video interview features, you can evaluate real-world capabilities, streamline your hiring, and reduce biases. Whether you’re hiring for remote roles, mass hiring, or looking to expand your diversity pool, Canditech’s data-driven platform ensures the right candidates are chosen for the job every time.
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  • 5

    android-backup-processor

    Android adb backup extractor and packer

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    Downloads: 174 This Week
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  • 6
    Game Extractor

    Game Extractor

    Open and edit the archive files used in over 5200 games.

    Reads and writes archives used in many popular games. Great for mod development and game translations. Supports over 5200 games, with more games added through small plugins. Also shows file previews and converts them to different formats.
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    Downloads: 473 This Week
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  • 7

    RecordEditor

    Editor for Fixed Width, Csv and Existing Xml files.

    The RecordEditor is a Data File editor for Flat Files (delimited and fixed field position). It supports Unix / PC / Legacy (e.g. Mainframe) file formats, both Text and binary files. The Editor uses a Record-Layout description to format the files. This is ideal for Fixed width (Text or Binary) files, Cobol Data Files, Mainframe files and complicated Csv files. Cobol Copybooks can be used to format Cobol Data files. As well as an editor, The following utilities are supplied * Formatted Compare * File Copy and reformat Utility * FileWizard this is use to work out the format of a File. It can generally find both Text and binary / packed deicimal fields in a file For Simple Csv you should look at its sister project reCsvEditor. Note: The core Editor code is also used in the "Protocol buffers editor" and "Avro Editor"
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    Downloads: 43 This Week
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  • 8
    TAPClean is a Commodore tape preservation / restoration tool. It will check, repair, and remaster Commodore 64 and VIC 20 TAP or DC2N DMP files (tape images).
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    Downloads: 33 This Week
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  • 9
    PufferPanel

    PufferPanel

    PufferPanel is an open source game server management panel

    The simplest, free, open source game management panel. PufferPanel is an open source game server management panel designed to be easy to use and easy to install. PufferPanel supports Minecraft, Forge, Spigot, Sponge, Source Dedicated Servers, BungeeCord, PocketMine, Forge, and much more. In addition to being a free and open source project, PufferPanel provides an easy-to-use interface for everyone from individual users to large networks or companies. We strive to create a friendly community, and we would love for you to join us.
    Downloads: 4 This Week
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  • E-commerce Fulfillment For Scaling Brands Icon
    E-commerce Fulfillment For Scaling Brands

    Ecommerce and omnichannel brands seeking scalable fulfillment solutions that integrate with popular sales channels

    Flowspace delivers fulfillment excellence by pairing powerful software and on-the-ground logistics know-how. Our platform provides automation, real-time control, and reliability beyond traditional 3PL capabilities—so you can scale smarter, faster, and easier.
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  • 10
    File Checksum Utility

    File Checksum Utility

    Calculate MD5, SHA1, SHA256 and SHA512 Hashes

    This software allows to generate MD (Message Digest) and SHA hashes from a file or files or files in a directory. Checksum is an value calculated from a content of file by special algorithm. You can also verify the file integrity of the downloaded document or program. File Checksum Utility is very easy to use. From the graphical user interface, choose the file from your computer storage. The tool calculate and display checksum values. File Checksum Utility is a free software (Freeware) that is available for use at no monetary cost. It is fully functional for an unlimited time. You can copy and diffuse it without restriction if it's free of charge. The author restricts the rights of the user to modify, make derivative works, or reverse-engineer the software.
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    Downloads: 59 This Week
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  • 11
    HT is a file editor/viewer/analyzer for executables. The goal is to combine the low-level functionality of a debugger and the usability of IDEs. We plan to implement all (hex-)editing features and support of the most important file formats.
    Downloads: 32 This Week
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  • 12
    IRremoteESP8266

    IRremoteESP8266

    Infrared remote library for ESP8266/ESP32

    Infrared remote library for ESP8266/ESP32. Send and receive infrared signals with multiple protocols. This library enables you to send and receive infra-red signals on an ESP8266 or an ESP32 using the Arduino framework using common 940nm IR LEDs and common IR receiver modules. e.g. TSOP{17,22,24,36,38,44,48} demodulators etc. Usage of the library has been slightly changed in v2.0. You will need to change your usage to work with v2.0 and beyond. You can read more about the changes required on our Upgrade to v2.0 page. The library has changed from using constants declared as #define to const with the appropriate naming per the C++ style guide. This may potentially cause old programs to not compile. The most likely externally used #defines have been aliased for limited backward compatibility for projects using the old style. Going forward, only the new constant name style will be supported for new protocol additions.
    Downloads: 3 This Week
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  • 13
    The Virtual USB Analyzer is a graphical tool for browsing traces of captured USB data. It supports logs generated by Ellisys hardware analyzers and VMware's software analyzer, and Linux's usbmon.
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    Downloads: 19 This Week
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  • 14
    ShellCheck

    ShellCheck

    A static analysis tool for shell scripts

    ShellCheck is a GPLv3 tool that provides warnings and possible suggestions for bash/sh shell scripts. ShellCheck finds bugs in your shell scripts. You can cabal, apt, dnf, pkg or brew install it locally right now. ShellCheck highlights and clarifies typical beginner's syntax mistakes and issues that cause a shell to give a cryptic error message. It shows typical intermediate level semantic problems that cause a shell to behave in a abnormally and counter-intuitively. It can also discover ssubtle caveats, corner cases and pitfalls that may cause an user's working script to fail under probable future circumstances. ShellCheck.net is always synchronized to the latest git version, and is the simplest way to give ShellCheck a go.
    Downloads: 2 This Week
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  • 15
    Apache Guacamole

    Apache Guacamole

    HTML5 Clientless Remote Desktop

    Apache Guacamole is a clientless remote desktop gateway. It supports standard protocols like VNC, RDP, and SSH. We call it clientless because no plugins or client software are required. Thanks to HTML5, once Guacamole is installed on a server, all you need to access your desktops is a web browser.
    Downloads: 8 This Week
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  • 16
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 8 This Week
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  • 17
    vmdkutil is a utility to manage VMware sparse virtual disk files (.vmdk), creating, cloning, merging, etc.
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    Downloads: 31 This Week
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  • 18
    Format Converter - Intel HEX, Elf32, BIN

    Format Converter - Intel HEX, Elf32, BIN

    File Format Converter Between HEX / BIN / ELF

    Intel HEX File Processing Software File Format Converter Between HEX / BIN / ELF The source code was created and debugged in the eS development environment (for Linux and Windows) and is an example of its use. https://esolution.sourceforge.io/
    Downloads: 30 This Week
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  • 19
    Homie for ESP8266

    Homie for ESP8266

    ESP8266 framework for Homie, a lightweight MQTT convention

    An Arduino for ESP8266 / ESP32 implementation of Homie, an MQTT convention for the IoT. This branch of Homie for ESP8266 implements Homie 3.0.1 and adds support for ESP32. PlatformIO is an open-source ecosystem for IoT development with the cross-platform build system, library manager and full support for Espressif ESP8266 development. It works on the popular host OS, Mac OS X, Windows, Linux 32/64, Linux ARM (like Raspberry Pi, BeagleBone, CubieBoard). Available in the PlatformIO registry. Pretty straightforward sketches, a simple light for example (TODO: adapt to V3). Cute HTTP API/Web UI/App to remotely send the configuration to the device and get information about it. ESP8266 framework for Homie, a lightweight MQTT convention for the IoT.
    Downloads: 1 This Week
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  • 20
    QxOrm library

    QxOrm library

    C++ Qt ORM (Object Relational Mapping) and ODM library

    QxOrm library is an Object Relational Mapping (ORM) and Object Document Mapper (ODM) database library for C++ Qt developers. QxEntityEditor is a graphic editor for QxOrm library : QxEntityEditor provides a graphic way to manage the data model. QxEntityEditor is multi-platform (available for Windows, Linux, and Mac OS X) and generates native code for all environments, desktop (Windows, Linux, Mac OS X), embedded and mobile (Android, iOS, Windows Phone, Raspberry Pi, etc.). A user manual (documentation) for QxEntityEditor application is available on QxOrm website.
    Downloads: 1 This Week
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  • 21
    Zuul

    Zuul

    Gateway service providing dynamic routing, monitoring and more

    Zuul is an L7 application gateway that offers many capabilities, including dynamic routing, monitoring, security, resiliency and more. It is used in the backend of the Netflix streaming service as a front door for all requests from devices and web sites. Zuul is ideal for cases like this where API traffic volume and diversity can become overwhelming and cause production issues to arise suddenly and without warning. Zuul has a broad range of filters that enable it to perform multiple functions quickly and apply functionality to services like Netflix. These functions include security authentication, dynamic routing, stress testing, load shedding and more.
    Downloads: 1 This Week
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  • 22
    The LAMPAS project is a combination of common Open Source tools that provides a unified system from where administrators, developers and other parties can manage a large application cluster. The underlying platform is LAMP based.
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    Downloads: 24 This Week
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  • 23
    A software toolkit for using the EPCglobal Low Level Reader Protocol (LLRP) to communicate with conforming RFID readers.
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    Downloads: 10 This Week
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  • 24
    DROID
    [2014-10-31] This project is obsolete, for latest version (6.1.3) see GitHub https://github.com/digital-preservation/droid (source) and http://www.nationalarchives.gov.uk/information-management/manage-information/preserving-digital-records/droid/ (binary) DROID (Digital Record Object Identification) is an automatic file format identification tool. It is the first in a planned series of tools developed by The National Archives under the umbrella of its PRONOM technical registry service. [2013-01-24] The binary download of the latest version of DROID has now been moved to The National Archives website: http://www.nationalarchives.gov.uk/information-management/projects-and-work/droid.htm The source code for the latest version of DROID remains available via Github: http://digital-preservation.github.com/droid/ [2012-09-07] DROID 6.1 has been released. New project hosting for the project can be found on GitHub: http://digital-preservation.github.com/droid/
    Downloads: 4 This Week
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  • 25

    pcapfix

    repair corrupted pcap and pcapng files

    this tool tries to repair your broken pcap and pcapng files by fixing the global header respectively packet blocks and recovering the packets by searching und guessing the packet headers or blocks
    Downloads: 8 This Week
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