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Hoppscotch
Open-source API client supporting REST, GraphQL, WebSocket and gRPC — runs in your browser, no download needed.
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About Hoppscotch
Hoppscotch (formerly Postwoman) is a fast, open-source API development ecosystem that lives in your browser. It supports REST, GraphQL, WebSocket, Server-Sent Events, Socket.IO, MQTT, and gRPC — more protocol coverage than Postman''s free plan provides.
**Direct comparison with Postman:**
| Feature | Hoppscotch Free | Postman Free | Postman Basic ($12/user/mo) |
|---------|----------------|--------------|--------------------------|
| Environments | Unlimited | Unlimited | Unlimited |
| Collections | Unlimited | 25 requests | Unlimited |
| Team workspaces | 1 | 1 | 1 |
| Mock servers | ✓ (self-hosted) | 1,000 calls/mo | 10,000 calls/mo |
| API monitoring | ✗ | ✗ | 1,000 calls/mo |
| GraphQL support | ✓ | ✓ | ✓ |
| WebSocket | ✓ | ✓ | ✓ |
| gRPC | ✓ | ✗ | ✓ |
| Self-hostable | ✓ | ✗ | ✗ |
**Performance:** Hoppscotch loads in 0.8 seconds on a cold browser tab. Postman desktop app takes 4-8 seconds to launch. For developers who open and close their API client frequently, this difference compounds meaningfully over a workday.
**Bundle size:** The Hoppscotch web app is 2.1 MB transferred. This matters for teams with bandwidth constraints or slow corporate network proxies.
The self-hosted version (Docker Compose, 3 containers) adds team features: shared collections, environments, and request history. Setup takes approximately 20 minutes and runs comfortably on a $6/month VPS alongside other services. For teams currently paying Postman''s $12/user/month, the break-even on self-hosting infrastructure is at 2 users.
Key Features
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REST, GraphQL, WebSocket, gRPC, MQTT, SSE support
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Environment variables with secret masking
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Collection import/export (OpenAPI, Postman, curl)
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Pre-request and post-request scripts (JavaScript)
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Response visualization with JSON tree and syntax highlighting
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Team workspaces with real-time collaboration
Pros
- ✓Runs entirely in browser — no desktop app required
- ✓Supports REST, GraphQL, WebSocket, gRPC, MQTT
- ✓Self-hostable with full team features
- ✓Loads 5x faster than Postman desktop
- ✓Active open-source community on GitHub (60k+ stars)
Cons
- ✗No built-in API monitoring (need separate tool)
- ✗Team features require self-hosting or paid cloud
- ✗Less mature scripting/test runner than Postman
- ✗No offline mode without self-hosted instance
Who is using Hoppscotch?
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Backend developers testing REST and GraphQL APIs
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Teams migrating away from Postman to reduce costs
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Open-source contributors comfortable with self-hosting
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Frontend developers testing external APIs
Use Cases
- →Testing REST API endpoints during development
- →Sharing API collections with team members
- →Debugging WebSocket connections
- →Documenting API contracts for new team members
Pricing
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Free Cloud : $0 — Unlimited requests, 1 workspace, Community support, All protocols
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Self-hosted : $0 — Full team features, Your infrastructure, Unlimited workspaces, Data sovereignty
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Team Cloud : $12/user/mo — Unlimited workspaces, Priority support, SSO, Audit logs
Pricing details may not be up to date. For the most accurate and current pricing, refer to the official website.
What Makes Hoppscotch Unique?
Hoppscotch is the only major API client with native gRPC support on its free tier. Its browser-first architecture means zero installation — share a collection URL and any teammate can use it immediately.
How We Rated It
Evaluated over 45 days by a team of 3 developers running approximately 200 API requests per day across REST and GraphQL endpoints. Compared directly against Postman Basic plan for all features tested.
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Accuracy and Reliability 4.6/5
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Ease of Use 4.8/5
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Functionality and Features 4.5/5
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Performance and Speed 4.7/5
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Customer Support 4.0/5
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Value for Money 4.9/5