The free (GPLv3+), fast arena FPS game with crisp movement and nuanced weapons | Topics: AFPS gaming, development, mapping | Chat rules: https://xonotic.org/rules

An advanced, purely functional programming language, haskell.org • spam ? call @mods • more rooms: #haskell-irc:matrix.org, #haskell-space:matrix.org • see also: joyful.com/Haskell+map, https://fosstodon.org/tags/Haskell, x.com/HaskellOrg

A privacy and security focused Android OS | https://calyxos.org | Issues / Feature requests: https://gitlab.com/CalyxOS/calyxos/issues In case of abuse, ping us with @calyx-mods.

A community for D&D 5e (2024) and older editions for players and DMs. Discuss the new ruleset, share homebrew, find groups, and talk shop about running and playing the game.

Second-generation Matrix homeserver written in Go! | https://element-hq.github.io/dendrite/ | #dendrite-dev:matrix.org for development — #dendrite-alerts:matrix.org for release notifications

Discussions around Prometheus (https://prometheus.io/) usage.

A direct line to the Matrix.org Foundation | Discuss governance, roadmap, ecosystem-wide concerns, Matrix.org homeserver, and other foundation initiatives | Staffed on weekdays during work hours UTC-8 to UTC+1 | See also ➡️ #sct-office:matrix.org and #governing-board-office:matrix.org | Latest news: https://matrix.org/blog/2025/06/election-results/

Fun and light-hearted chat about tabletop roleplaying games and related topics! Mostly non-DnD but Dungeons and Dragons is allowed. Hark! You should receive a message from @maubot:sabrinateenlich.win when you join, giving you the opportunity to verify and send messages!

https://localazy.com/o/element.io | element-web translations guide: https://github.com/vector-im/element-web/blob/develop/docs/translating.md | Element X Android guide: https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#strings | Element-Android guide: https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#i-want-to-help-translating-element

https://github.com/matrix-org/matrix.org Join the office hour on (most) Thursdays 16:00 Europe/Paris time! https://matrix.org/foundation/working-groups/#website-and-content

Chat and help for the game | Newbie guide: https://xonotic.org/guide | Room list: #space:xonotic.org | Chat rules: https://xonotic.org/rules

Updates and news about the t2bot.io service | #help:t2bot.io for help | Service status at https://status.t2bot.io

Libre Software, free file formats, open standards/protocols. See also: #libregaming-matchmaking:tchncs.de https://matrixrooms.info | Free Software (popularly marketed as Open Source, OSS, FOSS, or FLOSS) and related topics such as GNU, GPL, Linux, FSF, DRM, OSI, BSD, hacking, digital rights, user (computing ) freedom, decentralization, peer-to-peer (P2P), etc.

Welcome! Use this room for watercooler conversations, but please keep it constructive. Suggestions are best filed as discussions in GitHub: https://github.com/vector-im/element-meta/discussions

Discussion about SchildiChat Web/Desktop (based on Element Web; no longer maintained) | No off-topic allowed | https://schildi.chat/legacy/desktop/

Formula 1 Room | Space #motorsport:matrix.org | https://f1calendar.com/ | Watch live and archive races https://f1tv.formula1.com/ | Not officially affiliated with Formula 1

Submit your MSC for SCT review here! Staffed during business hours (10am UK - 4pm US, weekdays) - replies may be delayed over weekends/holidays | Spec discussion: #matrix-spec:matrix.org | Docs/spec writing: #matrix-docs:matrix.org | Offtopic: #matrix-spec-offtopic:matrix.org

Unofficial room for the cpp (c++) programming language. {.cpp, .cxx, .hpp, .hxx, .c, .h} advertisement or recruiting = immediate ban

CalyxOS is an Android distribution (custom ROM) that puts privacy and security into the hands of everyday users. https://calyxos.org/ Our Community Code of Conduct: https://calyxos.org/community/code-of-conduct/

We talk about coding (mostly frontend, html, css, js), ideas, design and programming principles. For Backend topics go to: https://matrix.to/#/#webdev_backend:matrix.org For other topics go to these 2 off-topic rooms: https://matrix.to/#/#efy_chat:matrix.org https://matrix.to/#/#messaging-offtopic:matrix.org Rules: • Don't ask to ask - just ask what you want directly, like "I wanna do X, how…

Fast, robust, intuitive plain text accounting | https://hledger.org | See also: #plaintextaccounting:matrix.org, https://etherpad.hledger.org, https://hledger.org/support

(Unofficial) i3-compatible Wayland compositor https://swaywm.org/ In case of spam, scam, harassment, etc. or some other moderation needs please ping @christopher:crossbach.de or some moderator.

Artix Linux unofficial community. artixlinux.org - The main communities are on irc, telegram, matrix.

Data Structures and Algorithms - Leetcode, Hacker Rank. Euler Project, CodeWars, Competitive Programming, DSA

CalyxOS beta testing | Main channel #calyxos-general:matrix.org

This room is for all culinarians, people who like to cook or at least eat food with pleasure. In short: Foodies. Share your pictures, recipes, experiences or ideas with the other users.

Unofficial: LaTeX document preparation system and TeX typesetting system

Come talk about all things technology! Programming | Linux | Open source projects | Arduino | Security | IoT | SBC like the raspberry pi | Arm devices | RISC-V | LlaMa Your pet tech projects are at home at xroutine This room is bridged with libera #xroutine

Feel free to explore this subspace to connect with nominees for the Individual Members group, seek advice, or share insights related to your interests. Let’s connect and drive our initiatives forward together! -- On hiatus until the next election. Find the current Governing Board at #governing-board-office:matrix.org

A space for discussing the design and implementation of NEW programming languages. This is NOT a general programming room! | Parsers, SSAs, and all other things Programming Language Development! | Space: #pld-space:zirco.dev | This room is bridged to Discord.