head to head · open source
Insomnia vs aws-lambda-fastify
Insomnia has 40,111 GitHub stars, 2,388 forks, 874 open issues and last shipped yesterday. aws-lambda-fastify has 560 stars, 37 forks, 5 open issues and last shipped 7 days ago. Insomnia leads on adoption by 7,063% (40,111 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 | 2026-11-02 | 2026-10-27 |
| 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 API Client Insomnia is an open source, cross platform API client for GraphQL, REST, WebSockets, Server Sent Events (SSE), gRPC and any other HTTP compatible protocol. With Insomnia you can: Debug APIs using the most popular protocols and formats. Design APIs using the native OpenAPI editor and visual preview. Test APIs using native test suites and collection runner. Mock APIs using a cloud or self hosted mocking server. Build CI/CD pipelines using the native Insomnia CLI for linting and testing. Collaborate with others using the many collaboration features. And more including the ability to use 3rd…
read the full Insomnia overview →
About aws-lambda-fastify
Introduction Inspired by the Code Genie serverless express library tailor made for the Fastify web framework. No use of internal sockets, makes use of Fastify's inject function. Seems faster (as the name implies) than serverless express and aws serverless fastify 😉 👨🏻💻Installation Options @fastify/aws lambda can take options by passing them with : awsLambdaFastify(app, options) serializeLambdaArguments Activate the serialization of lambda Event and Context in http header x apigateway event x apigateway context false (was true for reply.send({ hello: 'world' })) // Responses gain Content Encoding: br gzip…
read the full aws-lambda-fastify overview →
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Frequently asked questions
Is Insomnia or aws-lambda-fastify more popular?
Insomnia has 40,111 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 (40,111 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.