gitlab.torproject.org
Official source repository for the Tor network daemon and core protocol implementation.
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codeberg.org
FitoTrack is an open-source Android app for logging and viewing workouts such as running, cycling and hiking. It records workout type, shows general data and position on a map, and includes speed, height and heart rate diagrams. Workouts can be exported as GPX and uploaded to OpenStreetMap. The source is licensed under GPLv3.
fossies.org
Fossies is a curated repository of selected free and open source software focused mainly on Internet, engineering and science. It lets users view archive contents and browse individual member files, and provides doxygen-generated source code documentation for most packages. It also offers package meta information and license file overviews.
freedom.press
A collection of guides from the Freedom of the Press Foundation on source protection for journalists working on sensitive subjects. The guides cover creating processes to keep journalists and sources safe, addressing the first contact problem, Signal setup, security considerations for confidential tip pages, working with whistleblowers, address book risks, and sharing sensitive leaks with the press.
globaleaks.org
GlobaLeaks is free, open source software for setting up and maintaining a secure whistleblowing platform. It is designed as a framework for anonymous reporting, with privacy protection and submission protection enabled by default, and has been translated into over 70 languages. The source code is public and has been examined in independent security audits since 2011.
hd-source.to
hd-source is a non-English web resource for regional media, books, tools, communities, or learning.
aware-online.com
Aware Online tutorial for examining website source code during OSINT and web investigations.
codeberg.org
Isitreallyfoss is a website where projects are evaluated against the rights and freedoms provided by open source and free software. The repository on Codeberg holds the site's source, including about pages, documented license and transparency issues, and the project entries shown on the site. The site is built with Astro, and requests and feedback are accepted through Codeberg issues.
nsynthsuper.withgoogle.com
NSynth Super is an open source experimental instrument that lets musicians play sounds generated by the NSynth algorithm. The NSynth algorithm uses a deep neural network to learn sound characteristics and synthesize new sounds from four source sounds. The interface can be played via any MIDI source, such as a DAW, sequencer or keyboard.
opensource.guide
Read practical guidance on starting and contributing to open-source projects.
files.catbox.moe
Open Source Linux Programs is a Linux, macOS, BSD, or Unix resource for tools, documentation, communities, or system workflows.
open-source-security-software.net
Open Source Security Software is a developer resource for coding, documentation, communities, security research, or software tools.
openalternative.co
OpenAlternative is a curated collection of open source alternatives to everyday SaaS products. The site lists projects with repository stars, last commit times, licenses, and short descriptions, and notes support from partners and sponsors. It describes itself as a crowdsourced directory of open-source software.
opensource.builders
Opensource Builders is a platform that helps users discover open source alternatives to popular proprietary software. It allows users to compare features and capabilities of different open source tools to identify the best options for their needs. The platform is an initiative of Openship, and its interface was adapted from a design by Maze Heart.
opensourcealternative.to
opensourcealternative.to is a free directory that bills itself as the world's largest collection of open source software alternatives to proprietary products. It hosts over 500 open source alternatives to popular proprietary tools, and reports that over 2 million users have replaced proprietary software with options found on the platform. Listed alternatives include game engines, business suites, observability platforms, communication tools, and databases.
osinttechniques.com
OSINT Techniques offers free open source resources for open source intelligence and social media investigations, aimed mainly at analysts and researchers in investigative roles. The site explains that open source means publicly available information that any member of the public can lawfully obtain, and includes sections on tools, training, books and videos.
Répertoire International des Sources Musicales is an organization founded in Paris in 1952 that documents written musical sources. Its site offers searching, library sigla, and resources for librarians, including the Muscat cataloging tool and cataloging guidelines.
search.fuckoffgoogle.net
search.fuckoffgoogle.net is an instance of SearXNG, a privacy-respecting, open source metasearch engine. The site is branded as FuckOff Google, and is powered by SearXNG version 2026.5.8+d8ab61a9e. It provides links to the SearXNG source code, issue tracker, engine statistics and a list of public SearXNG instances.
searx.party
searx.party, branded as Searx Party, is an instance of SearXNG, a privacy-respecting, open source metasearch engine. Powered by SearXNG version 2026.9.25+12f8b6515, the site provides links to the SearXNG source code, issue tracker, engine statistics, a list of public instances, a privacy policy and contact information for the instance maintainer. It is associated with the Rock Eaters Network.
sirah.xyz
Sirah is a platform for reading source-attributed hadith texts from established collections, with Arabic text, translations and source grading. It also offers study guides connecting Quran references and narrations, plus an AI assistant that provides source-linked answers. Readers are advised to check quotations and references against the cited sources.
sketchappsources.com
Sketch App Sources is a curated collection of free and premium design resources for Sketch, Figma and Adobe XD. It offers icons, UI kits, wireframes, templates and vector files that the site states are editable in those tools. The site also publishes plugins, tutorials and articles, and was founded in 2012.
mybrowseraddon.com
Source Downloader adds download, media, or file-handling tools to the browser.
sourceforge.net
SourceForge is a software download or discovery resource for apps, installers, releases, or tools.
sr.ht
sourcehut hub is a forge platform that invites visitors to register or log in and features selected projects. Featured projects include a terminal-based Settlers of Catan implementation, a 3DS homebrew collection, a code editor powered by libfn, a social bookmarking website, and a terminal web browser.