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Top 23 aws-lambda Open-Source Projects
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Previous Serverless Version 0.5.x
⚡ Serverless Framework – Effortlessly build apps that auto-scale, incur zero costs when idle, and require minimal maintenance using AWS Lambda and other managed cloud services.
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Project mention: Flat Chat Threads Suck for Reading Books. So I Built a Local-First AI Tree Companion. | dev.to | 2026-06-08
Built on the Pi SDK for tree-structured agent conversations, Hono for a lightweight server (Electron-friendly), and SQLite with Drizzle ORM for metadata.
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Project mention: Launch Your First Serverless API: Hands-On with AWS Chalice on AWS Lambda | dev.to | 2025-08-19
If you're new to serverless, Chalice's minimal setup gets you deploying faster. Check the official GitHub for the latest updates: aws/chalice.
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my-arsenal-of-aws-security-tools
List of open source tools for AWS security: defensive, offensive, auditing, DFIR, etc.
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webiny-js
Open-source, self-hosted CMS platform on AWS serverless (Lambda, DynamoDB, S3). TypeScript framework with multi-tenancy, lifecycle hooks, GraphQL API, and AI-assisted development via MCP server. Built for developers at large organizations.
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agent-squad
Flexible and powerful framework for managing multiple AI agents and handling complex conversations
Project mention: Orchestrating Multi-Agents: Unifying Fragmented Tools into Coordinated Workflows | dev.to | 2025-06-29AWS Agent Squad (GitHub)
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formidable
The most used, flexible, fast and streaming parser for multipart form data. Supports uploading to serverless environments, AWS S3, Azure, GCP or the filesystem. Used in production.
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aws-lambda-power-tuning
AWS Lambda Power Tuning is an open-source tool that can help you visualize and fine-tune the memory/power configuration of Lambda functions. It runs in your own AWS account - powered by AWS Step Functions - and it supports three optimization strategies: cost, speed, and balanced.
Project mention: Your Lambda Memory is Wrong: Auto-Tune It and Save 40% in Minutes ⚡ | dev.to | 2026-02-11AWS Lambda Power Tuning is an open-source Step Functions state machine that:
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serverless-express
Run Express and other Node.js frameworks on AWS Serverless technologies such as Lambda, API Gateway, Lambda@Edge, and more.
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AWS Data Wrangler
pandas on AWS - Easy integration with Athena, Glue, Redshift, Timestream, Neptune, OpenSearch, QuickSight, Chime, CloudWatchLogs, DynamoDB, EMR, SecretManager, PostgreSQL, MySQL, SQLServer and S3 (Parquet, CSV, JSON and EXCEL).
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Since I was already using middy in the project, I discovered their http-router: a simple utility that forwards events to handlers based on method and path. It also handles extracting path parameters if you're using a /{proxy+} route in your API Gateway.
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Monorepo gave you atomic cross-service changes, a single dependency graph, unified CI/CD, and zero version skew between internal libraries. The cost was large clone sizes, slower CI without build caching, complex permission models, and the need for specialized tooling like Bazel, Pants, Nx, or Buck2 to keep builds fast.
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To explain the background, I'm a big fan of Bref (running PHP on AWS Lambda), which he developed. In 2023, I heard on the user Slack that he was "going to visit Japan." After many twists and turns, we held: "PHP Lovers Meetup vol.0 ~ It starts from "
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Chrome had no official arm64 build. There are distro specific builds from debian, fedora etc for arm64 chromium, but google had no official arm64 build.
There were actually some paid services that provided a distro-agnostic chromium arm64 builds mostly targeting people running puppeteer on AWS ARM lambda. You can see some discussion here https://github.com/alixaxel/chrome-aws-lambda/issues/241
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powertools-lambda-python
A developer toolkit to implement Serverless best practices and increase developer velocity.
The Lambda handler uses Powertools for AWS Lambda (Python) — a developer toolkit that gives you structured JSON logging, tracing, and metrics out of the box. I'm only using the Logger here, which gives me structured logs with correlation IDs and cold start tracking with a single decorator:
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
aws-lambda discussion
aws-lambda related posts
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What is AWS Blocks? How it differs from Amplify and App Studio, and what each one is aiming for
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Building a World Cup Bracket Picker with AWS Blocks
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Understanding AWS Blocks as a CDK Developer
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Composable building blocks for full-stack AWS apps
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Deploy FastAPI to AWS in 60 Seconds
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My Days at Laravel Live Japan 2026
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PDF to Text Conversion with Rust on AWS Lambda
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A note from our sponsor - SaaSHub
www.saashub.com | 20 Jun 2026
Index
What are some of the best open-source aws-lambda projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Previous Serverless Version 0.5.x | 46,917 |
| 2 | hono | 31,019 |
| 3 | Zappa | 11,849 |
| 4 | chalice | 11,058 |
| 5 | my-arsenal-of-aws-security-tools | 9,457 |
| 6 | up | 8,802 |
| 7 | webiny-js | 7,991 |
| 8 | agent-squad | 7,660 |
| 9 | formidable | 7,177 |
| 10 | aws-lambda-power-tuning | 6,022 |
| 11 | serverless-express | 5,267 |
| 12 | serverless-offline | 5,259 |
| 13 | Grant | 4,172 |
| 14 | AWS Data Wrangler | 4,107 |
| 15 | middy | 3,900 |
| 16 | claudia | 3,894 |
| 17 | lib | 3,819 |
| 18 | pants | 3,785 |
| 19 | Zappa | 3,691 |
| 20 | bref | 3,389 |
| 21 | chrome-aws-lambda | 3,288 |
| 22 | powertools-lambda-python | 3,265 |
| 23 | 0x4447_product_s3_email | 3,041 |
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