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

  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
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  • Auth0 B2B Essentials: SSO, MFA, and RBAC Built In Icon
    Auth0 B2B Essentials: SSO, MFA, and RBAC Built In

    Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.

    Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.
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  • 1
    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: 195 This Week
    Last Update:
    See Project
  • 2
    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: 24 This Week
    Last Update:
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  • 3
    QmailAdmin is a web interface for managing email addresses in virtual domains created by Vpopmail.
    Downloads: 5 This Week
    Last Update:
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  • 4
    P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.
    Downloads: 6 This Week
    Last Update:
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  • Catch Bugs Before Your Customers Do Icon
    Catch Bugs Before Your Customers Do

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  • 5
    [PL] Projekt rozbudowy systemu informatycznego IV LO w Bytomiu - system portow, serwery, CMS itp. [EN] A project which aims to enhance IT system of IV High School in Bytom, Poland - ports system, servers, CMS, etc.
    Downloads: 1 This Week
    Last Update:
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  • 6
    RainLoop Webmail (PHP)

    RainLoop Webmail (PHP)

    Simple, modern & fast web-based email client

    Modest system requirements, decent performance, simple installation and upgrade, no database required - all these make RainLoop Webmail a perfect choice for your email solution.
    Downloads: 1 This Week
    Last Update:
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  • 7
    CyBerFuN xBTiT
    CyBerFuN xBTiT by cybernet2u / I only install hacks and maintain them / all the credits for the core source goes to : http://www.btiteam.org new files here ->https://github.com/cybyd/cybyd
    Downloads: 0 This Week
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  • 8
    FOAFRealm (also called D-FOAF in version 2.0) is a distributed user profile management system based on FOAF. FOAFRealm is a set of tools that enables to manipulate FOAF (Friend-of-a-Friend) information within J2EE application and provides Realm implement
    Downloads: 0 This Week
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  • 9
    Communication system between administrator and network users - based on iptables,PHP,Apache and MySQL
    Downloads: 0 This Week
    Last Update:
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  • Fully Managed MySQL, PostgreSQL, and SQL Server Icon
    Fully Managed MySQL, PostgreSQL, and SQL Server

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  • 10
    A VNC Client for J2ME (Java 2 Mobile Edition). This includes a side project, an easy to use, clean java API for the RFB protocall. This project is now dead. Please see: https://sourceforge.net/projects/j2mevncclient/
    Downloads: 0 This Week
    Last Update:
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  • 11
    This project is a try of implementing Java Messages Systems on Java 2 Micro Edition. The project consists of a few parts: - a library for mobiles, implementing most of JMS methods - a proxy serwer, running on J2SE, communicating with queues provider
    Downloads: 0 This Week
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  • 12
    An integrated GNU/Linux distribution for routers.
    Downloads: 0 This Week
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  • 13
    MusicDevil allows you to easy share, store, tag, and stream music. it contains server, which stores files, preferences, and streams audio. It also contains a client app, which can download or upload files, enter tags, and allows you to listen to streams.
    Downloads: 0 This Week
    Last Update:
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  • 14
    PHPMyWebHosting (PMWH) will provide a gui viewed in a browser, which lets you adminstrate postfix-sql-based (mySQL, PostGre) emailaddresses, Apache Virtual Hosts, DNS-zones etc. When completed, PHPMyWebHosting will provide a complete webhosting-Interface
    Downloads: 0 This Week
    Last Update:
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  • 15
    PowerFolder
    PowerFolder provides, private cloud and hybrid cloud solutions for home users, businesses, enterprises and universities, for secure on-premise sync, in-house sharing and cloud backup.
    Downloads: 0 This Week
    Last Update:
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  • 16
    QVirtboard

    QVirtboard

    Extendable on-screen keyboard.

    QVirtboard (Qt Virtual Keyboard) is a simple on-screen keyboard application, which extends its functionality in order to allow disabled people to control computer environment. This program can be used as a standard point-and-click virtual keyboard, as well as a more complex tool which can cooperate with web cameras or more sophisticated devices.
    Downloads: 0 This Week
    Last Update:
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  • 17
    A simple SIP and RTP NAT friendly proxy for SIP based VoIP
    Downloads: 0 This Week
    Last Update:
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  • 18
    Ircproxy is transparent IRC content-filtering application. It may be used whenever there is a need of monitoring IRC connections.It may be used to deny specific connections or to behold suspicious IRC traffic.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    cybyd

    cybyd

    xBTiT moDDeD`

    cybyd is modded version of xBTiT
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20

    pfxLogViewer

    Postfix log viewer

    Fast and user friendly viewer for Postfix logs
    Downloads: 0 This Week
    Last Update:
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  • 21
    Why Can't I Connect?

    Why Can't I Connect?

    Makes it easier to resolve TCP/IP connection errors.

    "Why Can't I Connect?" makes it easier to resolve TCP/IP connection errors. Use it to diagnose connections to common server types and create generic clients and / or servers. A source tar, a 32 bit and 64 bit rpm, a 32 bit, 64 bit, and Raspbian / armhf deb, and a 32 bit Windows install exe are available. The 32 bit Windows executable runs fine in 64 bit Windows systems. Go to: https://www.whycanticonnect.com/?q=instructions for help / instructions. Go to: https://www.whycanticonnect.com/?q=knowledge-base to make requests, report bugs, ask questions, and view solutions.
    Downloads: 0 This Week
    Last Update:
    See Project
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