Light, fluffy, and always free - AWS Local Emulator  - GitHub - hectorvent/floci: Light, fluffy, and always free - AWS Local Emulator

Hacker News is a community-driven platform for sharing and discussing technology news, startups, and programming-related topics. Through user submissions and comments, Hacker News offers insights into emerging technology trends, industry developments, and entrepreneurial ventures. Readers can participate in discussions, share their insights, and stay informed about the latest advancements in technology and innovation.

Hacker News

Floci is a free, open-source local AWS emulator designed as a drop-in replacement for LocalStack Community Edition, which is sunsetting its free tier in March 2026. It requires no auth token, supports unlimited CI/CD usage, and starts in ~24ms with ~13 MiB idle memory. The Docker image is ~90 MB versus LocalStack's ~1 GB. Floci supports 20+ AWS services including API Gateway v2, Cognito, ElastiCache, RDS with IAM auth, DynamoDB Streams, and more — with 408/408 SDK tests passing. Setup is a single `docker compose up` and SDK integration requires only pointing the endpoint to localhost:4566.