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

  • AI-powered service management for IT and enterprise teams Icon
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  • 1

    UPnP PortMapper

    Manage port forwardings via UPnP

    The UPnP PortMapper can be used to easily manage the port mappings/port forwarding of a UPnP enabled internet gateway/router in the local network.
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    Downloads: 287 This Week
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  • 2
    libmms is a library for downloading (streaming) media files using the mmst and mmsh protocols.
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    Downloads: 250 This Week
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  • 3
    FileBot

    FileBot

    The ultimate TV and Movie Renamer / Subtitle Downloader

    FileBot is the ultimate tool for renaming your movies, tv shows or anime and downloading subtitles. It's smart, streamlined for simplicity and just works. FileBot supports Windows, Linux and Mac, plus there's a full-featured command-line interface for all sorts of automation.
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    Downloads: 86 This Week
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  • 4
    OpenAS2

    OpenAS2

    AS2 1.1 server implementation in Java

    OpenAS2 is a java-based implementation of the EDIINT AS2 standard. It is intended to be used as a server. It is extremely configurable and supports a wide variety of signing and encryption algorithms. Supports very high traffic volume allowing parallel processing of files per partner. SUPPORT: Please use the Github issues and Discussions channels here: https://github.com/OpenAS2/OpenAs2App/ Requirements: - Java 11 or newer (tested with the LTS versions of Java up to 21) - Any OS that runs Java Planned enhancements in the next major release: - User interace configuration GUI - Certificate Exchange Management IMPORTANT: Java 8 is no longer supported.
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    Downloads: 63 This Week
    Last Update:
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  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

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  • 5
    PostfixAdmin
    PostfixAdmin is a Web Based Management tool created for Postfix. It is a PHP based application that handles Postfix Style Virtual Domains and Users that are stored in MySQL, PostgreSQL or SQLite
    Downloads: 49 This Week
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  • 6
    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: 54 This Week
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  • 7
    GeoNetwork opensource - Metadata Catalog
    A web based Metadata Catalog Server for data description and discovery. Supports both generic and geospatial data discovery. It implements international standards (e.g. ISO19115/19139/19119, ISO19115-3, DCAT-AP, CSW 2.0, OGC API Records). It originates from the United Nations and is used by many governments as geoportal software. Active development and discussion takes place on GitHub and OSGeo Discourse. You can also connect directly with the companies supporting the development. Source code available on github https://github.com/geonetwork/
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    Downloads: 155 This Week
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  • 8
    Providing a tool to apply the data-recovery capability concepts of RAID-like systems to the posting & recovery of multi-part archives on Usenet.
    Downloads: 30 This Week
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  • 9
    udt
    UDT: UDP-based Data Transfer Protocol
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    Downloads: 26 This Week
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  • Free and Open Source HR Software Icon
    Free and Open Source HR Software

    OrangeHRM provides a world-class HRIS experience and offers everything you and your team need to be that HR hero you know that you are.

    Give your HR team the tools they need to streamline administrative tasks, support employees, and make informed decisions with the OrangeHRM free and open source HR software.
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  • 10
    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: 17 This Week
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  • 11
    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: 13 This Week
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  • 12
    TCNOpen

    TCNOpen

    Components for IEC61375 standardised communication

    TCNOpen is an open source initiative which the partner railway industries created with the aim to build in collaboration some key parts of new or upcoming railway standards, commonly known under the name TCN. TCN (Train Communication Network) is a series of international standards (IEC61375) developed by Working Group 43 of the IEC (International Electrotechnical Commission), specifying a communication system for the data communication within and between vehicles of a train. It is currently in use on many thousands of trains in the world in order to allow electronic devices to exchange information while operating aboard the same train. TCNOpen follows the Open Source scheme, as the software is jointly developed by participating companies, according to their role, so as to achieve cheaper, quicker and better quality results. Licenses: TRDP: MPLv2.0 http://www.mozilla.org/MPL/2.0/ TRDPSpy: GPL http://www.gnu.org/licenses/gpl.html
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    Downloads: 63 This Week
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  • 13
    Phex - P2P Gnutella filesharing program

    Phex - P2P Gnutella filesharing program

    A P2P filesharing client which connects to the Gnutella network.

    Phex is a P2P filesharing client which connects to the Gnutella network. It is multi-plattform and malware-free. It offers advanced functionalities and integrates all common Gnutella extensions like multi-source downloads and advanced search features
    Downloads: 19 This Week
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  • 14
    The Open ISES Project
    Open Information Systems for Emergency Services (Open ISES) is a community of software developers, paramedics, EMTs, law enforcement & fire fighters working together to create open source software & training materials for the emergency service community.
    Downloads: 9 This Week
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  • 15
    properJavaRDP is an open source Java RDP client for Windows Terminal Server. It is based on rdesktop, a SourceForge project. properJavaRDP runs on Java 1.1 up (optimised for 1.4), and works on Linux, Windows and Mac. It also includes log4j-java1.1.
    Downloads: 9 This Week
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  • 16
    Route_Serial_TCP_UDP

    Route_Serial_TCP_UDP

    Serial <-> TCP/IP, Serial <-> UDP/IP, TCP/IP <-> UDP/IP

    ScriptCommunicator (scriptable data terminal) script which routes: - serial port (RS232, USB to serial) <-> TCP/IP (Client/Server) - serial port (RS232, USB to serial) <-> UDP/IP - TCP/IP (Client/Server) <-> UDP/IP ScriptCommunicator can be found here: https://sourceforge.net/projects/scriptcommunicator/
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    Downloads: 6 This Week
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  • 17
    DKIMproxy is an SMTP-proxy that implements the DKIM and DomainKeys standards, to sign and verify email messages using digital signatures and DNS records. It can be used to add DKIM support to nearly any existing SMTP mail server.
    Downloads: 14 This Week
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  • 18

    MQTT Erlang client

    IOT Client of MQTT server written in Erlang

    MQTT client is designed for communication in Machine to Machine (M2M) and Internet of Things (IoT) contexts and implements MQTT protokol versions 3.1 and 3.1.1. The client is written in Erlang and tested with MQTT servers like Mosquitto and RabbitMQ.
    Downloads: 7 This Week
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  • 19
    PyWebMail is a Python library and POP3 gateway that enable working with WebMail servers like with POP3 or IMAP mail server. Currently Mail.Com, Yahoo! Mail, Gmail, Netscape.Net, HotMail and some minor servers support is finished.
    Downloads: 12 This Week
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  • 20
    Bluetooth Instant Messenger Valhallachat
    Valhalla Chat is a Bluetooth Instant Messenger (IM), that provides a common messaging platform for mobile phones, desktop computers and pdas.
    Downloads: 11 This Week
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  • 21
    CADI is an implementation of the JPIP standard (JPEG2000 Interactive Protocol - Part 9). CADI includes a JPIP server, a JPIP proxy, and a JPIP Client. CADI is designed and programmed with the aim to provide a flexible framework to test and develop ne
    Downloads: 11 This Week
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  • 22
    Java SIP softphone
    Peers is a very simple softphone. It's a SIP User-Agent, written in java, it works on windows, linux and mac. It can be used with SIP servers like opensips or asterisk IPBX. It supports G711 codec (PCMU and PCMA) and telephone-events (DTMF).
    Downloads: 2 This Week
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  • 23
    Funambol is a mobile application server that provides push email, address book and calendar (PIM) data synchronization, and device management, leveraging the SyncML (OMA) protocol. For users, this means BlackBerry-like capabilities on commodity handsets.
    Downloads: 5 This Week
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  • 24
    a-renet is a distributed chat and multiplayer games network for UNIX. Supported games are client-server, TCP based games.
    Downloads: 5 This Week
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  • 25
    BT-Sim is a BlueTooth simulator on a HCI level. The project alows to develop and test BT applications without using real BT hardware. It works in particular with PalmSource's Palm OS Simulator.
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    Downloads: 8 This Week
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