Showing 1136 open source projects for "operating systems"

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  • 1
    PairDrop

    PairDrop

    PairDrop, Transfer Files Cross-Platform

    PairDrop is a self-hosted, open-source alternative to Apple's AirDrop, allowing users to share files between devices over the same local network without the need for an internet connection.
    Downloads: 71 This Week
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  • 2
    Tutanota

    Tutanota

    Open source email service with a strong focus on security and privacy

    Tutanota is an open source email client focused on security and privacy. It is built with end-to-end encryption and 2FA, so you can be assured of utmost email security. Tutanota is always encrypted, so whether you’re using their secure webmail client, mobile apps or desktop clients, you can be sure to communicate securely.
    Downloads: 8 This Week
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  • 3
    Sideband

    Sideband

    LXMF client for Android, Linux and macOS to communicate with people

    Sideband is a privacy-focused, peer-to-peer mesh messaging protocol and platform that allows users to communicate directly over local networks or the internet without servers. It emphasizes metadata resistance and secure message delivery, working effectively in offline, low-bandwidth, or disaster recovery scenarios. Built-in Rust, Sideband supports encrypted group messaging, file transfers, and network self-discovery. It is ideal for use in community networks, crisis response, and...
    Downloads: 4 This Week
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  • 4
    Flying Carpet

    Flying Carpet

    File transfer between Android, iOS, Linux, macOS, and Windows

    Send and receive files between Android, iOS, Linux, macOS, and Windows over ad hoc WiFi. No shared network or cell connection required, just two devices with WiFi chips in close range. Don't have a flash drive? Don't have access to a wireless network? Need to move a file larger than 2GB between different filesystems but don't want to set up a network share? Try it out!
    Downloads: 5 This Week
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  • 5
    PikaTorrent

    PikaTorrent

    Just pick a Torrent, stream and download on all your devices

    PikaTorrent is a modern, cross-platform BitTorrent client designed for ease of use across desktop and mobile devices. Developed using Flutter, it offers a unified experience on Windows, Linux, Android, and plans for macOS and iOS. PikaTorrent emphasizes user-friendliness, allowing users to stream and download torrents seamlessly, with features like remote management and dark mode support enhancing the overall experience.​
    Downloads: 10 This Week
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  • 6
    Tox

    Tox

    A New Kind of Instant Messaging

    Tox is a peer to peer (serverless) instant messenger that focuses on security and privacy. In today's world where digital surveillance is rampant, Tox offers users a communication software alternative that's free from prying eyes and ears, and is, quite literally free and without advertising. Tox comes with all the great features you'd expect from an instant messenger application, including voice calls, video calls, file sharing and screen sharing. Everything done on Tox is encrypted...
    Downloads: 5 This Week
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  • 7
    Zulip

    Zulip

    Powerful open source team chat application

    Zulip is a powerful open source group chat application that combines the immediacy of real-time chat with the productivity benefits of a threaded conversation model. Zulip’s unique threading model allows users to easily catch up on important conversations, helping to save time and increase productivity.
    Downloads: 2 This Week
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  • 8
    libsignal

    libsignal

    Home to the Signal Protocol and other cryptographic primitives

    libsignal is the foundational cryptographic library that implements the Signal Protocol and other essential primitives used across the official Signal clients and servers, enabling secure end-to-end encrypted communication. Written primarily in Rust with bindings and APIs surfaced for Java, Swift, and TypeScript, this library encapsulates critical algorithms like the Double Ratchet, prekey mechanisms, secure key storage, and zero-knowledge group primitives, along with additional utilities...
    Downloads: 1 This Week
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  • 9
    Readrops

    Readrops

    Android multi-services RSS client

    Readrops is a multi-service RSS client for Android. Its name is composed of "Read" and "drops", where drops are articles in an ocean of news.
    Downloads: 0 This Week
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  • 10
    HP Socket

    HP Socket

    High Performance TCP/UDP/HTTP communication component

    Server Based on IOCP/EPOLL communication model, combined with technology of memory pool, private heap etc., efficient memory management is implemented to support large scale and high concurrent communication scenarios. Agent The Agent component is essentially a Multi-Client component that uses the same technical architecture as the Server component. An Agent component object can create and efficiently handle large-scale Socket connections at the same time. Client Based on Event-Select/POLL...
    Downloads: 2 This Week
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  • 11
    FreshRSS

    FreshRSS

    A free, self-hostable news aggregator

    FreshRSS is a self-hosted RSS and Atom feed aggregator. It is lightweight, easy to work with, powerful, and customizable. Follow websites, podcasts, and video channels in a single place. Read your articles directly in FreshRSS. Search and save queries for quick access. Generate feeds by scraping external websites. Generate new feeds based on your filters. Import and export your feeds with OPML. Stay connected to your feeds in real time. Adapt to your needs thanks to a lot of options. Follow...
    Downloads: 2 This Week
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  • 12
    Ovmeet

    Ovmeet

    Video conferencing and collaboration platform

    OvMeet is a video conferencing and collaboration platform developed in China that supports video meetings and H5 web/video live streaming. WebRTC, RTMP, SIP, RTSP, whiteboards, document presentation, file sharing, desktop sharing, recording, and more. The older version was built using Adobe/Flash, but that is no longer maintained. The newer version uses modern web technologies to deliver video conferencing services across Web, H5, Android, iOS, PC, etc. It also supports server...
    Downloads: 0 This Week
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  • 13
    Keybase client

    Keybase client

    Keybase Go library, client, service, OS X, iOS, Android, Electron

    Keybase is secure messaging and file-sharing. We use public key cryptography to ensure your messages stay private. Even we can’t read your chats. Keybase works for families, roommates, clubs, and groups of friends, too. Keybase connects to public identities, too. You can connect with communities from Twitter, Reddit, and elsewhere. Don’t live dangerously when it comes to documents. Keybase can store your group’s photos, videos, and documents with end-to-end encryption. You can set a timer on...
    Downloads: 0 This Week
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  • 14
    DefraDB

    DefraDB

    DefraDB is a Peer-to-Peer Edge Database

    DefraDB is a Peer-to-Peer Edge Database. It's the core data storage system for the Source Network Ecosystem, built with IPFS/IPLD, LibP2P, CRDTs, and Semantic web3 properties. DefraDB is a user-centric database that prioritizes data ownership, personal privacy, and information security. Its data model, powered by the convergence of MerkleCRDTs and the content-addressability of IPLD, enables a multi-write-master architecture. It features DQL, a query language compatible with GraphQL but...
    Downloads: 0 This Week
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  • 15
    HackRF

    HackRF

    Low cost software radio platform

    This repository contains hardware designs and software for HackRF, a low-cost, open source Software Defined Radio platform. HackRF One from Great Scott Gadgets is a Software Defined Radio peripheral capable of transmission or reception of radio signals from 1 MHz to 6 GHz. Designed to enable test and development of modern and next-generation radio technologies, HackRF One is an open-source hardware platform that can be used as a USB peripheral or programmed for stand-alone operation. HackRF...
    Downloads: 56 This Week
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  • 16
    Toxic

    Toxic

    A Tox-based instant messaging and video chat client

    ...It includes features such as text messaging, file transfer, and audio calls—all without requiring user accounts or central servers. Toxic is designed for power users who prefer a minimalist interface, operating entirely within a terminal while delivering strong privacy through the Tox peer-to-peer protocol. It’s lightweight, fast, and ideal for use in low-resource or remote systems.
    Downloads: 5 This Week
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  • 17
    The portable Universal Plug and Play (UPnP) SDK provides support for building UPnP-compliant control points, devices, and bridges on several operating systems. The main repository is at GitHub in https://github.com/pupnp/pupnp. This is just a clone repository for legacy reasons. Old SourceForge repo: git://pupnp.git.sourceforge.net/gitroot/pupnp/pupnp
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    Downloads: 4,206 This Week
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  • 18

    linuxptp

    PTP IEEE 1588 stack for Linux

    This project is an implementation of the Precision Time Protocol (PTP) according to IEEE standard 1588 for Linux.
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    Downloads: 4,065 This Week
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  • 19
    QPrompt

    QPrompt

    Personal teleprompter software for all video makers.

    Free teleprompter software for all video creators. Built with ease of use, fast performance, control accuracy, and cross-platform support in mind. QPrompt works with studio teleprompters and tablet teleprompters, cellphones, and webcams. It was also designed for use in video conferences.
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    Downloads: 1,722 This Week
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  • 20
    BeeBEEP (Free Office Messenger)

    BeeBEEP (Free Office Messenger)

    You can message and share files inside your intranet without a server.

    BeeBEEP is a secure (encryption based on Rijndael Algorithm, AES) peer to peer office messenger. You can talk and send files with all your colleagues inside a local area network such of an office, home or internet cafe without a server. BeeBEEP works also with VPNs. This serverless application is indispensable in all those places where privacy and security an essential requirement. For more info visit: https://www.beebeep.net
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    Downloads: 2,446 This Week
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  • 21
    Grsync
    Grsync is used to synchronize folders, files and make backups. It is a rsync GUI (Graphical User Interface).
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    Downloads: 65 This Week
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  • 22
    gSOAP Toolkit

    gSOAP Toolkit

    Development toolkit for Web Services and XML data bindings for C & C++

    The gSOAP toolkit is an extensive suite of portable C and C++ software to develop XML Web services with powerful type-safe XML data bindings. Easy-to-use code-generator tools allow you to directly integrate XML data in C and C++. Serializes native application data in XML. Includes WSDL/XSD schema binding and auto-coding tools, stub/skeleton compiler, Web server integration with Apache module and IIS extension, high-performance XML processing with schema validation, fast MIME/MTOM streaming,...
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    Downloads: 489 This Week
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  • 23
    Moodle

    Moodle

    A free course management system (CMS) to create online learning sites

    Moodle is a Course Management System (CMS), also known as a Learning Management System (LMS) or a Virtual Learning Environment (VLE). It is a Free web application that educators can use to create effective online learning sites. https://moodle.org/
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    Downloads: 402 This Week
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  • 24
    008

    008

    Open-source event-driven AI powered Softphone

    ...The name '008' or 'agent 008' reflects our ambition: beyond crafting the premier Open Source Softphone, we aim to introduce a programmable, event-driven AI agent. This agent utilizes embedded artificial intelligence models operating directly on the softphone, ensuring efficiency and reduced operational costs. This project is a WebRTC softphone, and communication is achieved via SIP over a socket. Leading PBX systems like Asterisk or Freeswitch support socket connections. If your provider does not offer this feature, consider using a SIP proxy such as Kamailio, Opensip or Routr. ...
    Downloads: 6 This Week
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  • 25

    bogofilter -- Fast Bayesian Spam Filter

    Fast Bayesian spam filter along lines suggested by Paul Graham

    The bogofilter package implements a fast Bayesian spam filter as suggested by Paul Graham in "A Plan For Spam" <http://www.paulgraham.com/spam.html>. It is written in C. Supported platforms: Linux, FreeBSD, Solaris, OS X, HP-UX, AIX, RISC-OS, ...
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    Downloads: 71 This Week
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