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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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Cataclysm-DDA
Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.
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zengm
Basketball GM (and other ZenGM games) are single-player sports management simulation games, made entirely in client-side JavaScript.
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veloren
An open world, open source voxel RPG inspired by Dwarf Fortress and Cube World. This repository is a mirror. Please submit all PRs and issues on our GitLab page.
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Barotrauma
A 2D online multiplayer game taking place in a submarine travelling through the icy depths of Jupiter's moon Europa.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
tgstation, an open-source repository for one of the most popular variants of the game "Space Station 13" was in the top ten "Most Discussed Repositories" in 2017.
For example, Space Station 13: https://github.com/tgstation/tgstation https://github.com/goonstation/goonstation
There's also games like Cataclysm DDA or Tales of Maj'Eyal that operate similarly and are pretty dang active.
Basketball GM is sorta open-source and has been for quite sometime. I think one of the challenges for that project is getting people to meaningfully contribute. As not only is this a fairly niche genre for a game, but the codebase is somewhat complex too.
Veloren is a free 3D RPG inspired by Cube World and made in Rust.
Mindustry is a paid game on Steam but is open-source with a passionate lead dev.
Barotrauma is a paid game that is partially open-source with the devs taking pull requests and bug reports from their community.