Open source lambda projects
Every project in the registry tagged lambda, ranked by real GitHub adoption.
Python Serverless Microframework for AWS
The complete load testing platform. Everything you need for production-grade load tests. Serverless & distributed. Load test with Playwright. Load test HTTP API
Fast and Simple Serverless Functions for Kubernetes
Open-source serverless CMS for modern web projects
CLI tool to build, test, debug, and deploy Serverless applications using AWS SAM
Run Express and other Node.js frameworks on AWS Serverless technologies such as Lambda, API Gateway, Lambda@Edge, and more.
Ministack: Free, open-source local AWS emulator - 60+ services, Terraform compatible, real databases. Free forever. MIT licensed.
🛵 The stylish Node.js middleware engine for AWS Lambda 🛵
Serverless Python
AWS Lambda support for ASGI applications
Insipired by aws-serverless-express to work with Fastify with inject functionality
Related tags
Frequently asked questions
How many open source lambda projects are there?
This registry tracks 11 projects tagged lambda, with 64,557 GitHub stars between them. The most-adopted is chalice at 11,060 stars.
Are these lambda projects free to use?
Yes — 10 of the 11 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which lambda project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these lambda projects still maintained?
10 of the 11 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.