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.

  • Network Management Software and Tools for Businesses and Organizations | Auvik Networks Icon
    Network Management Software and Tools for Businesses and Organizations | Auvik Networks

    Mapping, inventory, config backup, and more.

    Reduce IT headaches and save time with a proven solution for automated network discovery, documentation, and performance monitoring. Choose Auvik because you'll see value in minutes, and stay with us to improve your IT for years to come.
    Learn More
  • Payments you can rely on to run smarter. Icon
    Payments you can rely on to run smarter.

    Never miss a sale. Square payment processing serves customers better with tools and integrations that make work more efficient.

    Accept payments at your counter or on the go. It’s easy to get started. Try the Square POS app on your phone or pick from a range of hardworking hardware.
    Learn More
  • 1
    Florence

    Florence

    On-screen virtual keyboard

    Florence is an extensible scalable on-screen virtual keyboard for GNOME that stays out of your way when not needed. You need it if you can't use a real keyboard either because of a handicap, broken keyboard or tablet PC but you can use a pointing devide.
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    Downloads: 147 This Week
    Last Update:
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  • 2
    UrJTAG aims to create an enhanced, modern tool for communicating over JTAG with flash chips, CPUs, and many more. It is a descendant of the popular openwince JTAG tools with a lot of additional features and enhancements.
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    Downloads: 49 This Week
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  • 3
    gpsim - The gnupic Simulator
    gpsim is an open sourced simulator for Microchip's PIC microcontrollers. It supports all three families of PICs: 12-bit, 14-bit, and 16-bit cores. See also gputils http://gputils.sourceforge.net/
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    Downloads: 50 This Week
    Last Update:
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  • 4
    DICE
    DICE is a Discrete Integrated Circuit Emulator. It emulates computer systems that lack any type of CPU, consisting only of discrete logic components.
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    Downloads: 27 This Week
    Last Update:
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  • Premier Construction Software Icon
    Premier Construction Software

    Premier is a global leader in financial construction ERP software.

    Rated #1 Construction Accounting Software by Forbes Advisor in 2022 & 2023. Our modern SAAS solution is designed to meet the needs of General Contractors, Developers/Owners, Homebuilders & Specialty Contractors.
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  • 5
    JDiskMark

    JDiskMark

    Java Disk Benchmark Utility

    JDiskMark is a powerful and versatile disk benchmarking tool written in Java, designed to help you accurately measure the performance of your storage devices across different operating systems. Whether you're testing HDDs, SSDs, or network drives, JDiskMark provides reliable insights into your disk's read and write speeds. Please try our new ubuntu installer: https://sourceforge.net/projects/jdiskmark/files/jdiskmark_0.6.3-dev.fat_amd64.deb/download windows installer: https://sourceforge.net/projects/jdiskmark/files/jdiskmark-0.6.2.msi/download ZIP releases require java to be installed separately: * v0.5.0-v0.6.0 >Java 21 * v0.1-v0.4 > Java 8 user manual: https://github.com/jDiskMark/jdm-java/wiki/0.6.0-User-Manua
    Downloads: 19 This Week
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  • 6

    Linux GPIB Support

    Linux GPIB Driver package (source)

    The Linux GPIB Package is a support package for GPIB (IEEE 488.2) hardware. The package contains a development environment consisting of a GPIB library written in C, kernel driver modules, and bindings for several other languages.
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    Downloads: 33 This Week
    Last Update:
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  • 7

    pyrpl

    PyRPL turns your Red Pitaya into a powerful analog feedback device.

    The Red Pitaya is a commercial, affordable FPGA board with fast analog inputs and outputs. This makes it useful for quantum optics experiments, in particular as a digital feedback controller for analog systems. Based on the open source software provided by the board manufacturer, PyRPL (Python RedPitaya Lockbox) implements many devices that are needed for optics experiments with the Red Pitaya. PyRPL implements various digital signal processing (DSP) modules (see features below). It allows to arbitrarily interconnect the available DSP modules and retrieve signal values on timescales below 1 ms. The graphical user interface (GUI) provides a realtime display of the various measurement instruments and allows the easy configuration of DSP signal chains and feedback controllers. At the highest abstraction level, arbitrary feedback sequences can be defined to fulfill tasks as complex as approaching and locking a resonance of a high-finesse Fabry-Perot cavity (tested up to finesse=100,000).
    Downloads: 44 This Week
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  • 8

    Jojos Binary Diff

    Binary Diff and Undiff Utility

    JDIFF is a program that outputs the differences between two binary files, either in binary format or in human readable format (detailed or summarized) and then allows to reconstruct the second file from the first one and the diff-file.
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    Downloads: 12 This Week
    Last Update:
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  • 9
    Easy CNC

    Easy CNC

    Modular CNC software for Arduino controller

    The goal of the project is the realization of a modular firmware that allows to control a CNC machine with different utensils. For instance, a CNC with a drill, with few changes can become a plotter with a pen or cutting machine to cut cardboard or stickers. In order to do that, we want project a CNC router with a mechanism that allows a fast utensil change and a controlling firmware which can use different utensils changing some configuration parameters.
    Downloads: 7 This Week
    Last Update:
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  • BoldTrail Real Estate CRM Icon
    BoldTrail Real Estate CRM

    A first-of-its-kind homeownership solution that puts YOU at the center of the coveted lifetime consumer relationship.

    BoldTrail, the #1 rated real estate platform, is built to power your entire brokerage with next-generation technology your agents will use and love. Showcase your unique brand with customizable websites for your company, offices, and every agent. Maximize lead capture with a modern, portal-like consumer search experience and intelligent behavior tracking. Hyper-local area pages, home valuation pages and options for rich lifestyle data keep customers searching with your brokerage as the local experts. The most robust lead gen tools on the market help your brokerage, teams & agents effectively drive new business - no matter their budget. Empower your agents to generate free leads instantly with our simple to use landing pages & IDX squeeze pages. Drive more leads with higher quality and lower cost through in-house tools built within the platform. Diversify lead sources with our automated social media posting, integrated Google and Facebook advertising, custom text codes and more.
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  • 10

    COBOL copybook to XML converter

    Converts cobol copybooks to Xml/Java objects

    CB2XML (CopyBook to XML) is a COBOL CopyBook to XML converter written in Java and based on the SableCC parser generator. This project includes utilities to convert an XML instance file into its COBOL copybook equivalent string buffer and vice versa. Source is now available in GitHub: https://github.com/bmTas/cb2xml
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    Downloads: 6 This Week
    Last Update:
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  • 11
    newRPL

    newRPL

    The classic RPL programming language reimplemented and reimagined.

    This project reimplements from scratch the RPL language made popular by HP programmable calculators, in portable C/C++. The main goal is to release a complete computing environment for various targets. There's currently 4 active targets: the HP 50g, HP39gs and HP40gs calculators and a PC simulator (see the downloads section!). Other ports are planned for the future.
    Downloads: 6 This Week
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  • 12
    PLC-Logger

    PLC-Logger

    PLC-Logger and Analyzer

    Use PLC-logger to store and analyze data from almost every PLC-system. The following PLC-Systems are accessible: - Every PLC-System running a Modbus-TCP / Modbus-UDP Server - Siemens S7 via IBH NetLink - Siemens S7 with Ethernet-Interface - Codesys-based PLC-Systems - via OPC-Servers V0.61: - Bugfixes V0.60: - Some Bugfixes - Some data evaluation V0.59: - Modbus TCP Server Simulator supports Modbus UDP - Possibility to set bookmarks V0.57: - Modbus UDP supported - Edit configuration from connection-manager - Configuration keeps selected after starting or stopping V0.56 HF1: - Bugfix executing EasyModbusTCP Server Simulator V0.56: - Integration of EasyModbusTCP Server Simulator in "Tools"-Menue - Improvements in Modbus-Connection Wizard - Modbus Addresses shifted by (-1) to meet Modbus specification
    Downloads: 4 This Week
    Last Update:
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  • 13
    SDBoot is a complete bootloader solution (MCU side and PC side), free, with source code for AVR MCU chip. It features a checksumed protocol for safe programming.
    Downloads: 7 This Week
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  • 14
    CanFestival focuses on providing an ANSI-C platform independent CANOpen stack that can be implemented as master or slave nodes on PCs, Real-time IPCs, and Microcontrollers. A WxPython based CanOpen Object Dictionary editor GUI is also provided.
    Leader badge
    Downloads: 14 This Week
    Last Update:
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  • 15
    GGI stands for "General Graphics Interface", and it is a project that aims to develop a reliable, stable and fast graphics system that works everywhere. We want to allow any program using GGI to run on any platform requiring at most a recompile.
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    Downloads: 11 This Week
    Last Update:
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  • 16

    octave-raspberrypi

    GNU Octave toolkit for controlling a Raspberry Pi

    Basic Octave implementation of the matlab raspi extension, allowing communication to a Raspberry Pi board to control its hardware.
    Downloads: 5 This Week
    Last Update:
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  • 17

    OR-WRT

    Firmware for home-made robots

    Firmware for robots made using OpenWRT router and open-robotics.ru hardware
    Downloads: 3 This Week
    Last Update:
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  • 18
    SerialPortNet is an open source serial port communication library for Microsoft .NET. It's written in c#, implements complete .NET 2.0 specifications, and is designed to allow for multiple OSes and add-on 3rd party Serial to Network adapters.
    Downloads: 2 This Week
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  • 19
    eMKatic

    eMKatic

    Эмулятор ЭКВМ серии «Электроника»

    eMKatic — это кроссплатформенный эмулятор современных ЭКВМ серии «Электроника» производства НПП «СЕМИКО» (г. Новосибирск), являющихся развитием советских программируемых микрокалькуляторов с обратной польской нотацией Б3-34, МК-52, МК-61.
    Downloads: 6 This Week
    Last Update:
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  • 20

    Network Analyzer

    Analyze the network carateristics like Delay, Jitter, Packet loss etc.

    This software is a very simple network analyzer. When you click the start button, it will send a configurable stream of UDP packets to a host. (The receiving host is then required to echo all the packets back to the sender, which can be easily done via iptables rule under linux). Once the eched packets arrives back to the sender, the analyzer will calculate all the related statistics like, packet loss, jitter throughput etc... NOTE: in order to receive the echo packets you must configure the receiving host to echo the incoming packets. In the next release i will provide another java application that just echo on an UDP port.
    Downloads: 2 This Week
    Last Update:
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  • 21
    LittleFoot Elegance Photo ASCOM Driver
    ASCOM driver for the LittleFoot Elegance Photo (LFEP) telescope controller. Firmware 6.x is fully supported - firmware 5.x is partially supported (all LFEP features are available but configuration is only possible by handbox). Contains drivers for telescope, focuser, camera, filter wheel, roof controller and dew heater which shares a single connection to the controller.
    Downloads: 3 This Week
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  • 22
    Parallel Port Eprom Programmer contains a GNU/Linux driver that controls the eprom programmer throught the parallel port and a tool which allows reading and writing eproms.
    Downloads: 5 This Week
    Last Update:
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  • 23
    The aim of the project is to develop an open source iSCSI target with professional features, works well in enterprise environment under real workload, and is scalable and versatile enough to meet the challenge of future storage needs and developements.
    Downloads: 1 This Week
    Last Update:
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  • 24

    GQGMC

    Driver for GQ LLC GMC-300 Geiger Counter

    GQGMC is a user level driver for interfacing a Linux host to GQ Electronic's GMC-300 geiger-muller counter. Written in C++, the driver provides an interface method for each of the capabilities of the GMC-300. A sample command line text only program and sample Qt based GUI program are provided.
    Downloads: 4 This Week
    Last Update:
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  • 25
    This project is for a PE Builder plug-in for the Ext2Fsd software. I decided to develope this solution in order to be able to scan ext2/ext3 partitions using KAV/KIS anti-virus Rescue Disk which is created with PE Builder.
    Downloads: 4 This Week
    Last Update:
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