Download Free API Testing Tool
Download SchemaClient — Free API Tester
Free API testing tool for Windows, macOS, and Linux. Test REST and GraphQL APIs, tunnel localhost, monitor HTTP traffic, and validate schemas. No signup, no credit card — the full client is free.
System Requirements
Minimum
- • 4 GB RAM
- • 100 MB disk space
- • Internet connection (for tunneling & sync)
Supported Platforms
- • Windows 10 / 11 (x64)
- • macOS 12+ (ARM64, x64)
- • Linux (x64) — .deb, .AppImage, .rpm