What’s an open-source project you genuinely can’t believe is free?

This is an automated archive made by the Lemmit Bot.

The original was posted on /r/opensource by /u/Bladerunner_7_ on 2026-05-15 04:47:27+00:00.

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Could be developer tooling, AI infra, productivity tools, anything. Curious what projects people think deserve way more recognition.

For me recently it’s been:

Langship — github.com/open-gitagent/langship.sh

vLLM — github.com/vllm-project/vllm