Sites like spek.cc

Freeter, a desktop app that organizes work by projects and tasks, with a blog on productivity and browsing

ossia score, an open-source interactive intermedia sequencer for media and parameters, with documentation, API reference and development news from its French and Canadian team

Spicetify, an open-source toolkit for customizing the Spotify desktop app with themes, extensions, custom apps and a command-line tool

Tasks.org: documentation and product pages for Tasks, a free open-source Android task management app with CalDAV sync

Matchmaking lobby, chat room and leaderboards for online multiplayer games of Marathon and Aleph One, run by its community

An online tool that removes vocals from songs to make karaoke tracks and splits audio into stems

A turn-based post-apocalyptic survival roguelike game called Cataclysm: Dark Days Ahead, with its downloads, releases, packaging and donations pages

Free open source software for video recording and live streaming, the OBS Studio download and project site

Remmina, an open-source remote desktop client with a news blog and project pages by developer Allan Nordhøy

Super Productivity, an open-source task manager and time tracker app for planning deep work and tracking time spent

Audio Science Review, a forum and measurement database where Amir tests and reviews headphones, speakers and audio electronics

ReShade, an open-source post-processing injector for games and video software by developer crosire, with a community forum

Crystal Dew World is a site of software tools and dev support for CrystalDiskInfo and CrystalDiskMark, with news and Japanese-language pages by Crystal Dew

Free and paid After Effects templates, sound effects, and motion graphics tutorials from Avnish Parker's online shop and blog

Subclassed, a Mac and iOS app developer by Stefan Keller, making utilities that convert contacts and calendars

Mixxx, a free open-source DJ mixing software application, run by the Mixxx e.V. nonprofit association in Germany

Warzone 2100, a free open-source 3D real-time strategy video game with downloads for Windows, macOS and Linux

GCompris is a free educational software suite for children, with activities for learning on computers

A tiling window manager for X11, written and configured in Haskell, with guides, release news and a blog

ReVanced is a project website for an open-source tool that patches Android apps such as YouTube with ad-blocking and customisation features

GIMP, the free open-source cross-platform image editor project, with its official website, bug reports, documentation and news

CODEX FFMPEG, a resource site by Gyan Doshi offering FFmpeg Windows builds, guides and consulting on the multimedia tool

elementary OS is a Linux desktop operating system site, with download, release notes and app store pages for its distribution

OpenRGB is an open source, cross-platform program for controlling RGB lighting on many devices without manufacturer software

Free Download Manager, a free download accelerator and organizer for Windows, macOS, Android and Linux, with torrent support

qutebrowser is a keyboard-focused, minimal-interface free web browser built on Python and Qt, licensed under the GPL

A BitTorrent client called Deluge, with GTK, web and console interfaces, for Linux, macOS, Unix and Windows

Tales of Maj'Eyal, a topdown tactical roguelike RPG game, and the T-Engine4 Lua game engine behind it

Catnap Games, the independent studio of developer Tom Andrle near Prague, making iOS and Mac apps and games

OpenSCAD is free software for creating solid 3D CAD models by coding, with news and gallery pages

Manjaro, a Linux distribution built on Arch with rolling releases, with news and team pages by its core developers

The Battle for Wesnoth is an open source, turn-based fantasy strategy video game, with its project's developer documentation and release notes

CQRLOG, a free Linux ham radio logging program with MySQL database, radio control and DX cluster support, by developers Petr and Martin

Joplin, an open source note-taking app with multimedia notes, web clipping and end-to-end encrypted sync, developed by Laurent

ddcutil documentation: a Linux command-line tool and shared library for controlling monitor settings over DDC/CI and USB

fastlane is an open source tool for automating mobile app development, screenshots, beta distribution and store publishing

Cyotek, a software company's site offering WebCopy, CopyTools, Gif Animator and other Windows utilities, with a C# and .NET development blog

WinSCP, a free open-source SFTP and FTP client application for Windows file transfers between local and remote computers

Vifm, an open-source terminal file manager with a Vim-like curses interface, documented and maintained by developer xaizek

A Firefox-based web browser project, built by a group of developers and designers focused on productivity and privacy

The GNOME project's website, presenting its free and independent desktop computing platform and its community, in English and several other languages

Calibre, a free open-source e-book management software for converting, organising and syncing e-books across devices

BleachBit, an open-source disk cleaner and file shredder for Windows and Linux systems, with its help and documentation pages