API Development · Updated 2026
Quick Verdict
Choose Hoppscotch if you need a powerful, standalone API client that works across any browser or desktop. Choose Thunder Client if you live in Visual Studio Code and want to test APIs without ever leaving your editor.
Hoppscotch is a full-featured, open-source API development platform accessible via web app or desktop, emphasizing privacy, collaboration, and a rich feature set outside any IDE. Thunder Client is a streamlined VS Code extension designed for speed and convenience within the editor, trading some advanced features for deep integration. Both are free, but their core difference lies in Hoppscotch's standalone, ecosystem approach versus Thunder Client's context-specific, lightweight plugin model.
Side-by-Side Comparison
| Aspect | Hoppscotch | Thunder Client |
|---|---|---|
| Pricing | Free | Free |
| Ease of Use | Intuitive web/desktop interface with a gentle learning curve | Extremely simple setup and use within VS Code's familiar UI |
| Scalability | Higher, with team workspaces, project organization, and sharing features | Lower, focused on individual developer speed within the IDE |
| Integrations | Broad (Git, OAuth, webhooks) and platform-agnostic | Deep integration with VS Code only (e.g., environment variables, editor themes) |
| Open Source | Yes | No |
| Best For | Standalone API development, collaboration, and open-source advocates | VS Code-centric developers seeking integrated, lightweight API testing |
Choose Hoppscotch if...
Hoppscotch is the better choice for developers who work across multiple IDEs or prefer a dedicated, feature-rich API tool. It's ideal for teams needing collaboration features, a shareable workspace, or who prioritize an open-source, privacy-focused tool that operates independently of their code editor.
Choose Thunder Client if...
Thunder Client is the superior choice for developers who spend most of their time in Visual Studio Code and value a seamless, low-friction workflow. It eliminates context-switching by providing immediate API testing capabilities within the editor, making it perfect for quick debugging and integrated development sessions.
Product Details
Hoppscotch
A lightweight, fast, and open-source API development ecosystem for building, testing, and sharing APIs.
Pricing
Free
Best For
Developers and teams who want a fast, privacy-focused, and open-source API client for building and testing web services.
Key Features
Pros
- + Completely free and open-source with a strong community
- + Lightweight, fast, and runs directly in the browser
- + Privacy-focused with local execution and optional self-hosting
Cons
- - Team collaboration features are less mature than some competitors
- - Lacks some advanced automation and mocking features of paid tools
- - Primarily a web app, though desktop apps are available
Thunder Client
A lightweight, GUI-based REST API client extension for Visual Studio Code.
Pricing
Free
Best For
Developers who primarily work in Visual Studio Code and want a fast, integrated tool for testing APIs without context-switching to external applications.
Key Features
Pros
- + Extremely fast and lightweight with minimal setup
- + Seamlessly integrated into VS Code workflow
- + Completely free with no account required for core features
Cons
- - Limited advanced features compared to full-scale API platforms
- - Tied exclusively to Visual Studio Code
- - Less sophisticated collaboration and documentation tools