Desktop AppWorks Offline300+ APIs Built-in

The Ultimate Desktop
API Testing Tool

A fast, privacy-first desktop app for API testing. Explore 300+ production-ready APIs or test your own - works offline with optional cloud sync.

100%Offline Capable
FreeForever
300+APIs to Explore
Free forever • No registration required • Browse APIs
APIVerve Studio Screenshot
Core Feature

Powerful API Request Builder

Build and test API requests with an intuitive interface. Support for all HTTP methods, custom headers, authentication, and multiple request body formats including JSON, XML, and form data.

  • Visual request builder with syntax highlighting
  • Built-in mock servers and JSON bins
  • Environment variables and dynamic values
  • Pre-request scripts and test automation
APIVerve Studio Request Builder
APIVerve Studio Collections
Organization

Smart Collections & Workspaces

Organize your API requests into collections with folder structures, shared variables, and powerful workspace management. Perfect for managing complex API projects.

  • Hierarchical folder organization
  • Shared environments and variables
  • Multiple workspace support
  • Import/export in multiple formats

Built for Developers, By Developers

All the tools you need for API development and testing in one powerful desktop application

100% Offline Capable

Work without internet connection. Perfect for air-gapped environments, travel, or unreliable networks.

Lightning Fast

Native desktop performance with instant startup and response times. No web browser overhead.

Privacy First

Your data stays on your machine. Optional cloud sync is encrypted and you control what gets synced.

Mock Servers & JSON Bins

Create mock API servers for testing and development. Store and manage JSON data with built-in JSON bins.

Smart Collections

Organize requests into collections with environments, variables, and automated test sequences.

300+ APIs Built-in

Explore and test production-ready APIs directly in the app. Weather, email validation, IP lookup, and hundreds more.

Ready to Transform Your API Testing?

Join thousands of developers who rely on APIVerve Studio for their API development workflow