head to head · open source
Insomnia vs agentgateway
Insomnia has 40,111 GitHub stars, 2,388 forks, 874 open issues and last shipped yesterday. agentgateway has 5,879 stars, 1,042 forks, 258 open issues and last shipped yesterday. Insomnia leads on adoption by 582% (40,111 vs 5,879 stars). Insomnia is written in TypeScript under Apache-2.0; agentgateway is written in Rust under Apache-2.0. Insomnia has attracted 6% as many forks as stars, agentgateway 18%. agentgateway was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | agentgateway | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 5.9K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.4K | ⑂ 1.0K |
| 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 agentgateway if
- You want the agentgateway feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and agentgateway 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 agentgateway
The first complete connectivity solution for Agentic AI. Agentgateway is an open source proxy built on AI native protocols (MCP & A2A) that provides drop in security, observability, and governance for agent to LLM, agent to tool, and agent to agent communication across any framework and environment. Intro to Agentgateway Video Key Features LLM Gateway Route traffic to major LLM providers (OpenAI, Anthropic, Gemini, Bedrock, and more) through a unified OpenAI compatible API with budget and spend controls, prompt enrichment, load balancing, and failover. MCP Gateway Connect LLMs to tools and external data sources…
read the full agentgateway overview →
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Frequently asked questions
Is Insomnia or agentgateway more popular?
Insomnia has 40,111 GitHub stars and agentgateway has 5,879. Insomnia has the larger community by that measure.
Are Insomnia and agentgateway free?
Both are open source. Insomnia is licensed under Apache-2.0 and agentgateway under Apache-2.0. Neither carries a licence fee.
What is the difference between Insomnia and agentgateway?
Insomnia is written in TypeScript and agentgateway in Rust. 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 agentgateway?
Choose Insomnia if you want the larger community (40,111 stars) or its Apache-2.0 licence terms. Choose agentgateway if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.