Insomnia Alternatives in 2026
Insomnia (insomnia.rest, Kong Inc.) has been an open-source API client since 2016. In 2023 they added cloud sync (mandatory login for new features). The Insomnium fork emerged as a community response. Alternatives: Bruno (git-friendly, no cloud), Hoppscotch (web + self-host), Postman (SaaS), Thunder Client (VS Code). Enterno.io — for production uptime checks.
Below: competitor overview, feature comparison, when Enterno.io wins, FAQ.
About the Competitor
Insomnia built by Greg Schier in 2016, acquired by Kong Inc. in 2019. Open-source (MIT), cross-platform desktop app. GraphQL + REST + gRPC + WebSocket support. Free tier + paid cloud features. In 2023 introduced mandatory login — triggered the Insomnium fork.
Enterno.io vs Competitor — Feature Comparison
| Feature | Enterno.io | Competitor |
|---|---|---|
| Open source | ❌ | ✅ (MIT) |
| Cloud sync | ✅ | ⚠️ requires account |
| GraphQL support | ⚠️ | ✅ |
| gRPC support | ❌ | ✅ |
| Scheduled monitoring | ✅ | ❌ |
| Mock server | ❌ | ✅ Paid |
| Self-hostable | ❌ | ⚠️ fork Insomnium |
| RU UI | ✅ | ❌ |
When to Pick Enterno.io
- You need continuous monitoring — Insomnia is one-off testing
- RU UI + support
- Simple API testing without setup — Enterno HTTP checker
- If gRPC is critical — Insomnia goes deeper
- Open-source without cloud — Insomnium (fork) or Bruno
Learn more
Frequently Asked Questions
Insomnia vs Insomnium?
Insomnium — community fork after the cloud-required updates. Identical features, without forced login or cloud dependency.
Postman or Insomnia?
Insomnia better for GraphQL + lightweight UI. Postman — team collaboration + CI/CD integration (Newman).
API monitoring use?
Insomnia — manual only. For continuous — Enterno <a href="/en/monitors">Monitor</a> with keyword-match on response.
Scripting support?
Insomnia has pre/post request JS scripts. Enterno API v4 — webhooks + custom validators.