Free
ByteCap
ByteCap is a cloud-based platform that monitors API uptime, tests API functionality, tracks webhooks, and sends alerts to maintain API reliability and performance.
Free
Hedra
Hedra is an open-source load testing tool that helps developers simulate realistic traffic patterns to test API and web service performance, supporting multi-stage scenarios and CI/CD integration.
Free Trial
Aspen – API Testing for macOS
Aspen is a native macOS application for API testing that enables developers to send HTTP requests, customize them, and inspect responses, focusing on local API debugging.
Free
Backengine
Backengine is a web platform that enables developers to create mock APIs, monitor API calls in real-time, debug issues, and collaborate with teams to streamline API development and testing.
Free
HTTPie AI
HTTPie AI is an AI-enhanced HTTP client that helps developers test, debug, and automate API workflows through an intuitive interface and scripting capabilities.