Hoppscotch for API teams choosing between Postman and Insomnia
Hoppscotch offers a lightweight, open-source alternative to Postman and Insomnia through browser-first or self-hosted deployments. While it lacks Postman's governance features, it provides essential support for REST, GraphQL, and WebSocket protocols with a new API Mock Server.
Hoppscotch provides a browser-first, open-source alternative for developers who want to test APIs without installation or account creation. I recommend Hoppscotch for small teams that prioritize data sovereignty through self-hosting or for individuals needing instant access via a web browser.
Hoppscotch strengths and limitations
Hoppscotch works as a lightweight tool that supports REST, GraphQL, WebSocket, SSE, and MQTT. You can use the Browser PWA to store data in local browser storage, though this version hits CORS restrictions when testing local endpoints. The desktop client solves these CORS issues by running outside the browser sandbox. For teams requiring more control, the self-hosted deployment puts the entire system on your own infrastructure. In early 2025, Hoppscotch launched an API Mock Server, and it currently offers OpenAPI 3.1 export and collection-level scripting.
Hoppscotch lacks the governance features found in Postman. It does not include an API catalog, version management across teams, or governance rules. If a backend team changes a response schema, Hoppscotch has no spec-linked contract testing to validate the change against an OpenAPI definition. This means a renamed field might pass Chai assertions if they only check a field by hand. The tool also lacks load testing, virtual users, and CI performance thresholds. Because it only sends outbound requests, you must use tools like ngrok or webhook.site to test inbound webhooks from Stripe or GitHub.
| Feature | Hoppscotch Capability |
|---|---|
| Protocols | REST, GraphQL, WebSocket, SSE, MQTT |
| Deployment | Browser PWA, Desktop, Self-hosted |
| Mocking | API Mock Server (added late 2025) |
| gRPC Support | Not included |
Comparing workflows with Postman and Insomnia
Postman acts as a full API development platform. It includes scheduled monitors, visual Flow builder, and Postbot, which is an AI assistant that generates tests. For a 10-person team, the Professional plan costs $19 per user per month. Postman handles large scale collaboration with shared workspaces, roles, and permissions. However, its Electron client consumes over 1 GB of RAM when you open large collections. Since March 2026, Postman’s free tier supports only a single user, so any shared workspace requires a paid subscription.
Insomnia provides a different approach by offering three distinct storage modes: Local Vault, Git Sync, and Cloud Sync. You can pick per project, meaning sensitive work stays local while internal APIs use cloud sync. Insomnia excels at GraphQL because its editor uses schema introspection for autocomplete and inline validation. Its pricing starts at $12 per seat per month for paid plans. While Insomnia offers strong core features, it lacks the built-in monitoring and documentation depth of Postman.
If you are already using VS Code, why would you switch to a heavy desktop application? You might prefer Insomnia if you want a focused client with high performance. Insomnia typically uses between 50MB and 150MB of memory, whereas Postman often exceeds 1GB during heavy usage. If your team needs to manage API definitions as code, Insomnia allows you to push collections to your own Git repository via Git Sync.
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