Bruno vs Thunder Client
Side-by-side comparison of features, pricing, ratings, and alternatives.
Bruno is an open-source, lightweight alternative to Postman and Insomnia for exploring and testing APIs. It provides a simple and intuitive interface for sending HTTP requests and analyzing responses.
Thunder Client is a REST API testing extension that runs inside VS Code and JetBrains IDEs, letting developers send requests and inspect responses without leaving their editor or switching to a separate app like Postman. Collections and environments are stored locally, and can be synced to a team's own Git repository for version-controlled collaboration. Beyond manual request testing, Thunder Client supports scripted assertions, WebSocket, SSE, and gRPC testing, and a CLI for running collections inside CI/CD pipelines. It has been downloaded more than six million times since launching in 2021, positioning itself as a lighter, IDE-native alternative to standalone API clients.
- Lightweight and easy to use
- Free and open-source
- Cross-platform compatibility
- Extensive community support
- No context switching since testing happens inside the code editor
- Local-first storage with Git sync avoids vendor cloud lock-in
- Free tier is usable for individual developers
- Lightweight compared to full standalone API platforms
- Limited features compared to Postman and Insomnia
- Steep learning curve for advanced features
- Limited support for enterprise features
- Fewer collaboration and reporting features than dedicated platforms like Postman
- Paid tiers require annual billing for the lowest per-seat price
- Advanced features like performance testing are still listed as coming soon
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Alternatives to Thunder Client
View all →The Verdict
AI-generated from listing dataBruno is the safer default for teams needing a free, open‑source, standalone API IDE, while Thunder Client shines when you want lightweight testing inside VS Code or JetBrains without vendor lock‑in.
Key differences
- •Integration: Thunder runs inside VS Code/JetBrains; Bruno is a separate desktop app.
- •Pricing model: Bruno is completely free and open‑source; Thunder offers a freemium tier with paid features.
- •Collaboration: Bruno includes built‑in sharing features; Thunder relies on Git‑based sync and has fewer collaboration tools.
- •Supported protocols: Thunder adds WebSocket, SSE, and gRPC testing; Bruno is limited to HTTP/REST.
Pricing & value
Bruno is fully free and open‑source, whereas Thunder’s advanced features require a paid subscription.
Ease of use / learning curve
Thunder lives inside the developer’s IDE, avoiding context‑switching and easing onboarding for VS Code users.
Features & depth
Thunder supports WebSocket, SSE, gRPC and a CLI for CI/CD, which Bruno does not provide.
Integrations & ecosystem
Thunder integrates natively with VS Code, JetBrains, Git, and CI/CD pipelines; Bruno has no listed integrations.
Collaboration
Bruno lists collaboration features for sharing API projects, while Thunder’s collaboration is limited to Git‑based sync.
Support
Both offer community support; Thunder adds paid email/priority support, but free tier support is comparable.
Security & privacy
Thunder stores collections locally and syncs via the team’s own Git repo, reducing vendor cloud exposure.
Choose Bruno if…
Teams needing a completely free, open‑source, standalone API IDE with basic collaboration.
Choose Thunder Client if…
Developers who work primarily in VS Code/JetBrains and want IDE‑embedded testing plus advanced protocols.
Common questions
Is there any cost to use either tool?
Bruno is free and open‑source. Thunder offers a free tier for individuals; paid tiers are required for advanced features.
Can I test WebSocket or gRPC APIs with both?
Only Thunder Client lists WebSocket, Server‑Sent Events, and gRPC testing; Bruno is limited to HTTP/REST.
How does collaboration work?
Bruno provides built‑in sharing of API projects. Thunder relies on Git‑based syncing, which may require extra setup.