Free Insomnia Alternative — Browser-Based API Tools
Insomnia is a popular open-source API client, but after Kong's acquisition it now requires cloud sync and an account. For everyday API debugging — decoding tokens, formatting responses, encoding parameters — Toolpilot's free browser tools are faster and require zero setup.
Reviewed by the AI Tools Hub team · Updated March 2026
Toolpilot
Free · No account · Browser-based
- ✓ 100% client-side — data never leaves your browser
- ✓ Instant results with no server round-trip
- ✓ Covers 4 tools for this use case
Insomnia
Open-source API client for REST, GraphQL & gRPC
- • External website (data may be sent to server)
- • May require account for full features
- • Page load time varies
Feature Comparison: Toolpilot vs Insomnia
| Feature | Toolpilot | Insomnia |
|---|---|---|
| JWT decode & inspect | ✓ | ✓ |
| JSON formatting & validation | ✓ | ✓ |
| URL encoding/decoding | ✓ | ✓ |
| Base64 encode/decode | ✓ | ✗ |
| No install required | ✓ | ✗ |
| No account required | ✓ | ✗ |
| 100% offline-capable (client-side) | ✓ | ✗ |
| HTTP request sending | ✗ | ✓ |
| GraphQL support | ✗ | ✓ |
| Environment variables | ✗ | ✓ |
Toolpilot Tools That Replace Insomnia
The following free tools on Toolpilot cover the most common Insomnia use cases:
How to Replace Insomnia with Toolpilot
Task: Inspect a JWT token payload
With Insomnia (~45 seconds)
- 1. Open Insomnia
- 2. Sign in to your account
- 3. Create request
- 4. Send it to get JWT
- 5. Copy token and decode separately
With Toolpilot ✓ ~3 seconds
- 1. Open toolpilot.dev/tools/jwt-decoder/
- 2. Paste the JWT
- 3. See header, payload, and expiry instantly
Why Developers Choose Toolpilot
🔒 Privacy First
All tools run in your browser. Your code, tokens, and data never touch a server.
⚡ Instant Results
No server round-trips means results in under a second, even on slow connections.
🛠️ 20+ Tools
One site replaces dozens of bookmarks — JSON, encoding, hashing, text tools and more.
Frequently Asked Questions
Can Toolpilot replace Insomnia completely? ▾
No — Toolpilot covers the debugging side (JWT decoding, JSON formatting, encoding). For sending HTTP/GraphQL requests, you still need an API client like Insomnia.
Why switch from Insomnia for debugging tasks? ▾
Insomnia now requires an account and cloud sync. Toolpilot requires nothing — open a browser tab and start debugging immediately, with all data staying in your browser.
Is Toolpilot open source? ▾
Toolpilot's tools run entirely client-side in your browser. You can inspect the JavaScript source code directly in your browser's developer tools.
Explore All Free Developer Tools
More free alternatives: