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

  • Get Avast Free Antivirus with 24/7 AI-powered online scam detection Icon
    Get Avast Free Antivirus with 24/7 AI-powered online scam detection

    Get protection for today’s online threats. Free.

    Award-winning antivirus protection, as well as protection against online scams, dangerous Wi-Fi connections, hacked accounts, and ransomware. It includes Avast Assistant, your built-in AI partner, which gives you help with suspicious online messages, offers, and more.
    Free Download
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 1
    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.
    Leader badge
    Downloads: 961 This Week
    Last Update:
    See Project
  • 2

    empty

    Run applications under pseudo-terminal (PTY) sessions

    empty - run applications under pseudo-terminal (PTY) sessions to dialogue with interactive programs. Replace TCL/Expect with a simple tool and use your favorite shell (sh, bash, csh, tcsh, ksh, zsh, etc)
    Leader badge
    Downloads: 189 This Week
    Last Update:
    See Project
  • 3
    The Heirloom Project provides standard Unix utilities.
    Leader badge
    Downloads: 459 This Week
    Last Update:
    See Project
  • 4
    AQEMU

    AQEMU

    a GUI for virtual machines using QEMU as the backend

    AQEMU is a GUI for virtual machines using QEMU as the backend. Support for the KVM accelerator on Linux is provided. The application has a user-friendly interface and allows to set a large number of options.
    Leader badge
    Downloads: 63 This Week
    Last Update:
    See Project
  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 5
    Eagle Mode

    Eagle Mode

    Zoomable user interface (ZUI) with file manager, file viewers and more

    Eagle Mode is a zoomable user interface (ZUI) with file manager, file viewers, games, and more. This project is about a futuristic style of human-computer interaction, where the user can visit almost everything simply by zooming in. It features a portable C++ toolkit API for developing such ZUIs, and it features the Eagle Mode application, which provides a virtual cosmos with plugin applications. The most important one is the professional file manager with its rich, scriptable command set. It integrates file viewers for most of the common file types, as well as an audio and video player. Furthermore, the virtual cosmos contains a chess game, a netwalk game, a 3D minesweeper game, a multi-function clock, a stock watchlist, some fractals, and a Linux kernel configurator in form of a kernel patch.
    Leader badge
    Downloads: 54 This Week
    Last Update:
    See Project
  • 6
    Gammu

    Gammu

    Cellular manager for mobile phones/modems

    Gammu is a cellular manager for mobile phones/modems. It contains libraries and functions for ringtones,logos,phonebook,SMS,etc. (used by external software), a command line version (with backup/restore) and SMS gateway (with MySQL and PostgreSQL supp
    Downloads: 31 This Week
    Last Update:
    See Project
  • 7
    RemoteBox

    RemoteBox

    A client for the remote use of VirtualBox on a server

    RemoteBox is an open-source VirtualBox client which means you can remotely administer (ie over the network) an installation of VirtualBox on a server, including its guests and interact with them as if they were running locally. VirtualBox is installed on the server machine and RemoteBox runs on the client machine. RemoteBox provides a complete Gtk 3 graphical interface with a look and feel similar to that of VirtualBox's native GUI and supports the vast majority of features.
    Downloads: 38 This Week
    Last Update:
    See Project
  • 8
    filerunner
    FileRunner is a two pane file manager for Unix and Unix like systems. It is simple and efficient and has a built-in FTP and SFTP client. It also does a reasonable (and improving) job on Windows systems. New and improved from a FileRunner of long ago.
    Leader badge
    Downloads: 14 This Week
    Last Update:
    See Project
  • 9
    Libinklevel is a library to check the ink level of ink jet printers connected via USB. Canon BJNP network printers are supported too. It works on Linux and FreeBSD.
    Leader badge
    Downloads: 47 This Week
    Last Update:
    See Project
  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 10
    Ink is a command line tool which displays the ink level of your printer. It makes use of libinklevel.
    Leader badge
    Downloads: 41 This Week
    Last Update:
    See Project
  • 11
    z390 Portable Mainframe Assembler

    z390 Portable Mainframe Assembler

    z390 Portable Mainframe Assembler and Emulator

    z390 Portable Mainframe Assembler and Emulator
    Downloads: 12 This Week
    Last Update:
    See Project
  • 12
    NB: Development has been moved to Github: https://github.com/avrdudes/avarice AVaRICE is a program for interfacing the Atmel JTAG ICE to GDB to allow users to debug their embedded AVR target.
    Downloads: 12 This Week
    Last Update:
    See Project
  • 13
    The MDK provides a simulator of D. Knuth's MIX computer, and a development environment to write, run and debug MIXAL programs on it.
    Downloads: 18 This Week
    Last Update:
    See Project
  • 14
    BEYE (Binary EYE) is a free, portable, advanced file viewer with built-in editor for binary, hexadecimal and disassembler modes. It contains a highlight AVR/Java/i86-AMD64/ARM-XScale/PPC-64 and other disassembler, full preview of MZ,NE,PE,ELF and other.
    Downloads: 35 This Week
    Last Update:
    See Project
  • 15

    MUMPS Database and Language

    ANSI Standard MUMPS

    Implementation of ANSI Standard MUMPS 1995 and ISO/IEC 11756 for FreeBSD, OSX and linux. Also on the Raspberry Pi (ARM) under debian and Windows under cygwin. This is the post-relational database.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 16

    xjobs

    Command line tool to run batches of jobs in parallel.

    xjobs has a command line interface similar to xargs to start processes, but runs processes in parallel and provides enhanced concepts for I/O redirection.
    Downloads: 16 This Week
    Last Update:
    See Project
  • 17
    Open source Algol 68 implementations

    Open source Algol 68 implementations

    Implementations for the Revised Report language

    This project offers open source implementations for UNESCO/IFIP's Algol 68 (the Revised Report language). The project offers two implementations: Implementation 1 is Algol68G: a recent checkout hybrid compiler/interpreter by Marcel van der Veer, supporting arbitrary arithmetic, partial parametrisation, complex numbers, POSIX threads, GNU plotutils, GNU scientific library, curses, sound, TCP sockets, RegEx and PostgreSQL. Inplementation 2 is algol68toc, a port by Sian Mountbatten of the vintage Algol68RS (UK Defense Research Agency) compiler. The implementation emits C code.
    Leader badge
    Downloads: 4 This Week
    Last Update:
    See Project
  • 18
    kissme is a free (GPLed) Java Virtual Machine. It is being developed on GNU/Linux and can run console java applications. kissme is to be used with the GNU Classpath java class library. kissme also provides support for orthogonally persistent java.
    Downloads: 11 This Week
    Last Update:
    See Project
  • 19
    This project aims to provide a common and convenient environment for evaluating C and C++ compilers' relative performances on some well-known benchmarks and applications.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 20
    Zipios

    Zipios

    Zipios is a C++ library for reading and writing 32bit Zip archives.

    This project has moved to GitHub https://github.com/Zipios/Zipios Zipios is a C++ library for reading and writing Zip archive files. Access to the data of individual entries is provided through standard C++ iostreams. A simple read-only virtual file system that mounts regular directories and zip files is also provided.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 21
    The Bluetail Ticket Tracker (BTT) is a system for creating, storing and keeping track of tickets. BTT can also store customer info and mail, as well as general information structures (e.g FAQ).
    Downloads: 4 This Week
    Last Update:
    See Project
  • 22
    RPC (Remote Procedure Call) system with C language support, own network protocol, automatic parallelization, SSL support and other features.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 23
    cingb is an ATTEMPT to write a Gameboy-emulator for all kinds of platforms. It plays Gameboy and Gameboy Color ROMs, includes a debugger for step-by-step analysis of Gameboy programs and might be also interesting for educational purposes.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 24
    The MSX emulator that aims for perfection. NOTE: this project moved to GitHub. The content of this project page is frozen and will not be updated. The project is alive and kicking, though! Check out our website for the new project pages.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    BMDFM

    BMDFM

    Binary Modular DataFlow Machine (BMDFM)

    Binary Modular DataFlow Machine (BMDFM) is a software package that enables running an application in parallel on shared memory symmetric multiprocessing (SMP) computers using the multiple processors to speed up the execution of single applications. BMDFM automatically identifies and exploits parallelism due to the static and mainly dynamic scheduling of the dataflow instruction sequences derived from the formerly sequential program. The BMDFM dynamic scheduling subsystem performs a symmetric multiprocessing (SMP) emulation of a tagged-token dataflow machine to provide the transparent dataflow semantics for the applications. No directives for parallel execution are needed. More info: http://www.bmdfm.com
    Downloads: 3 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • Next
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.