head to head · open source
Insomnia vs aws-lambda-fastify
Insomnia has 40,022 GitHub stars, 2,366 forks, 874 open issues and last shipped yesterday. aws-lambda-fastify has 560 stars, 37 forks, 5 open issues and last shipped 2 months ago. Insomnia leads on adoption by 7,047% (40,022 vs 560 stars). Insomnia is written in TypeScript under Apache-2.0; aws-lambda-fastify is written in JavaScript under MIT. Insomnia has attracted 6% as many forks as stars, aws-lambda-fastify 7%. Insomnia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Insomnia | aws-lambda-fastify | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 560 |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-18 | 2026-08-04 |
| Forks | ⑂ 2.4K | ⑂ 37 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Insomnia if
- You weight community size — 40K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick aws-lambda-fastify if
- You want the aws-lambda-fastify feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and aws-lambda-fastify fits your workflow better
About Insomnia
Insomnia is an open source, cross platform API client built with Electron and TypeScript for developing and testing APIs across multiple protocols including REST, GraphQL, WebSockets, SSE, and gRPC. It runs on macOS, Windows, and Linux and is distributed under the Apache 2.0 license. The project serves as a direct open source alternative to Postman, offering similar core functionality without vendor lock in or mandatory cloud usage.
read the full Insomnia overview →
About aws-lambda-fastify
aws lambda fastify is an MIT licensed JavaScript library that runs a Fastify application as an AWS Lambda handler behind API Gateway or an Application Load Balancer, built for Node.js teams that already write HTTP APIs with Fastify and want to deploy them serverless without rewriting their routes.
read the full aws-lambda-fastify overview →
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Frequently asked questions
Is Insomnia or aws-lambda-fastify more popular?
Insomnia has 40,022 GitHub stars and aws-lambda-fastify has 560. Insomnia has the larger community by that measure.
Are Insomnia and aws-lambda-fastify free?
Both are open source. Insomnia is licensed under Apache-2.0 and aws-lambda-fastify under MIT. Neither carries a licence fee.
What is the difference between Insomnia and aws-lambda-fastify?
Insomnia is written in TypeScript and aws-lambda-fastify in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Insomnia or aws-lambda-fastify?
Choose Insomnia if you want the larger community (40,022 stars) or its Apache-2.0 licence terms. Choose aws-lambda-fastify if its feature set, stack or MIT licence fits better. Both are self-hostable.