Radar / AI infrastructure / Floci
Floci: a free local AWS emulator that starts in 24 ms
Free, open-source, MIT-licensed local AWS emulator that runs 100+ services on localhost:4566 with no account, no auth token and no paid gates, as a drop-in replacement for LocalStack's retired Community edition.
Why it matters
The LocalStack Community edition went behind auth tokens in March 2026; Floci is the free replacement developers actually adopted, with 28K stars, 2.6M Docker pulls and a 24 ms start in 13 MiB of memory.
What you could build with it
A small startup team could run its integration tests against Floci in CI instead of a paid cloud sandbox, catching S3 and DynamoDB wiring bugs before deploy without any cloud bill.
Does it hold up?
Usable now: 2.6M Docker pulls and a drop-in LocalStack-compatible port, but the project itself warns it is young, so edge-case service compatibility is still being mapped by users.
Built with Floci
- LocalStack Is Gone: Floci vs Moto vs Testcontainersarticle · Compares Floci against Moto and Testcontainers as the LocalStack replacement, with service coverage and a Docker quick-start.
- Floci hits 2.6M pulls as free cloud development toolarticle · Reports 2.6M Docker pulls since the May 2026 launch, 25.8K stars, and the project's growth to five maintainers.
- Desktop, Dictation, and a Local Cloud, Day 265article · GitHub trending diary for 4 Nov 2026 profiling Floci as the free LocalStack replacement, with its 24 ms start and 13 MiB idle footprint.
Learn more
First spotted on github: source.
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