• 7-ZipsystemActiveLGPL-2.1-or-later2026-07-02Igor Pavlov — File archiver by Igor Pavlov built around the open 7z format and the LZMA algorithm, offering some of the strongest general-purpose compression ratios available. Its compression code is in the public domain and used far beyond the program itself.
• Apache CassandradatabasesActiveApache-2.02026-07-05Apache Software Foundation — Distributed wide-column database designed for fault tolerance with no single point of failure, born at Facebook from Amazon's Dynamo and Google's Bigtable ideas and donated to the Apache Software Foundation in 2009.
• Apache HTTP ServerinternetActiveApache-2.02026-07-02Apache Software Foundation — The Apache HTTP Server, the web server that carried the early web and has served a huge share of all websites continuously since 1995. Its permissive licence and module architecture set the template for collaborative open source infrastructure, and gave the Apache Software Foundation its name.
• ArdourmultimediaActiveGPL-2.0-or-later2026-07-05Paul Davis & Ardour community — Professional digital audio workstation for recording, editing, mixing and mastering, with unlimited tracks, full plugin support and film-scoring workflows. Paul Davis has led its development as free software since 1999.
• AsciidoctorofficeActiveMIT2026-07-05Asciidoctor contributors — Fast text processor for the AsciiDoc markup language, turning plain-text documents into HTML, PDF, EPUB and man pages. A cornerstone of docs-as-code: documentation stored as versionable, future-proof plain text.
• AudacitymultimediaActiveGPL-2.0-or-later2026-07-02Audacity Team / Muse Group — The best-known free multi-track audio editor and recorder, used for everything from podcast production to scientific audio analysis since 2000. Community pressure over telemetry after its 2021 acquisition showed how vigilantly users guard free software projects.
• BlendergraphicsActiveGPL-3.0-or-later2026-07-02Blender Foundation — Complete free 3D creation suite covering modelling, sculpting, animation, simulation, rendering, compositing and video editing. Released from proprietary captivity in 2002 through a community crowdfunding campaign that bought its source code, it has grown into an industry-grade tool used in feature films and games.
• CaddyinternetActiveApache-2.02026-07-05Caddy Authors — Modern web server that made HTTPS the default: automatic certificate provisioning and renewal via Let's Encrypt, HTTP/2 and HTTP/3 out of the box, all configured in a few readable lines.
• calibreofficeActiveGPL-3.0-only2026-07-02Kovid Goyal & contributors — The complete e-book toolkit: library management, format conversion between dozens of e-book formats, device synchronisation, metadata editing and a content server. Kovid Goyal's project has become the indispensable tool for keeping personal digital libraries alive and portable.
• CertbotinternetActiveApache-2.02026-07-05Electronic Frontier Foundation — The EFF's client for Let's Encrypt that automated free TLS certificates and, together with that CA, encrypted most of the web within a few years — one of the clearest security victories free software has ever delivered.
• ChromiumbrowsersActiveBSD-3-Clause2026-07-05The Chromium Authors — The open source browser project whose codebase underlies Chrome, Edge, Brave, Vivaldi and most other modern browsers. Preserving it means preserving the engine that renders most of today's web — whoever its corporate steward may be tomorrow.
• ClickHousedatabasesActiveApache-2.02026-07-05ClickHouse contributors — Column-oriented database for real-time analytics, open-sourced by Yandex in 2016, that aggregates billions of rows per second on ordinary hardware. Its release set a new public baseline for analytical performance.
• ClonezillasystemActiveGPL-2.0-or-later2026-07-05NCHC Free Software Labs — Disk imaging and cloning system from Taiwan's NCHC that backs up or deploys entire disks and partitions, supporting mass deployment to dozens of machines at once. A cornerstone tool for system preservation and recovery.
• CMakedevelopmentActiveBSD-3-Clause2026-07-05Kitware — Cross-platform build system generator that describes a build once and produces native project files for every compiler and IDE — the de facto standard for building C and C++ software.
• curldevelopmentActivecurl License (MIT-like)2026-07-02Daniel Stenberg & contributors — Command-line tool and library (libcurl) for transferring data over dozens of protocols, maintained by Daniel Stenberg since 1998. Embedded in cars, phones, TVs, printers and space hardware, it is plausibly the most widely deployed software component on Earth.
• darktablegraphicsActiveGPL-3.0-or-later2026-07-02darktable community — Photography workflow application and non-destructive RAW developer — a virtual light table and darkroom giving photographers a free alternative to Lightroom, with colour-managed processing and powerful masking.
• digiKamgraphicsActiveGPL-2.0-or-later2026-07-05KDE Community — KDE's professional photo management suite handling libraries of hundreds of thousands of images, with face recognition, geotagging and RAW support — all processed locally, keeping private archives private.
• DuckDBdatabasesActiveMIT2026-07-05DuckDB Foundation — In-process analytical database — the "SQLite of analytics" — running complex column-store queries inside your application or notebook with zero setup. Developed at CWI Amsterdam, the birthplace of much database research.
• Element DesktopcommunicationActiveApache-2.02026-07-05Element / Matrix contributors — Desktop client for Matrix, the open, federated and end-to-end encrypted communication protocol adopted by governments and institutions across Europe as their sovereign alternative to proprietary messengers.
• FalkonbrowsersActiveGPL-3.0-or-later2026-07-05KDE Community — KDE's lightweight web browser (formerly QupZilla) built on Qt WebEngine, with native KDE integration and built-in ad blocking. It keeps browser diversity alive within the Qt world.