API Tester Alternatives & Competitors

The Collaboration Platform for API Development.

Key Postman features:

User-Friendly Interface Collaboration Comprehensive Testing Tools Extensive API Documentation

Open Source

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.

Key Insomnia REST features:

User-Friendly Interface Support for Multiple Protocols Environment Management Custom Plugins and Themes

Open Source

Monitor all your cloud services with our status page aggregator. IT teams choose IsDown to monitor all their vendors and get alerts whenever an outage occurs. Integration with Datadog, PagerDuty, Slack, Microsoft Teams, and a lot more.

Key IsDown.app features:

Status Dashboard Multiple Profiles for same account Slack App Zapier Integration

Try for free paid Free Trial $37.0 / Monthly (Pro)

Paw is a REST client for Mac.

Key RapidAPI for Mac features:

User Interface Team Collaboration Advanced Request Capabilities Extensions and Plugins

Log, monitor and measure your API usage to solve API problems fast.

Key Runscope features:

Ease of Use Comprehensive API Testing Automated Testing Detailed Reporting

Rest API client for VS Code, lightweight Postman alternative.

Key Thunder Client features:

User-Friendly Interface VS Code Integration Lightweight Environment Variables

Developers all around the world rely on HTTPie for API testing.

Key HTTPie for Terminal features:

User-Friendly Syntax JSON Support Headers and Options Simplification Built-in Authentication

API performance, accuracy, and uptime testing. Without code.

Key API Fortress features:

Comprehensive Testing User-Friendly Interface Automation Capabilities Collaboration Features

Download AppCircle apk 1.3 for Android. App Circle lets you share apps with friends and view apps your friends use.

Key Appcircle features:

Cross-Platform Support Ease of Use Comprehensive Testing Continuous Integration and Delivery

Open source API development ecosystem.

Key Hoppscotch features:

User-Friendly Interface Open Source Multi-Platform Support Real-Time Collaboration

Open Source freemium

SoapUI Pro is one of the most prominent API testing platforms around, allowing developers to quickly prototype the functions of their apps and get them to market with little hassle.

Key soapUI features:

Comprehensive Testing User-Friendly Interface Extensive Protocol Support Scripting Capability

Simple, powerful, secure API performance monitoring.

Key APImetrics features:

Comprehensive Monitoring Easy Integration Detailed Reporting Customizable Metrics

The modern standard for financial crime compliance to monitor, screen, detect, and investigate.

Key Flagright features:

Transaction Monitoring Risk Scoring Case Management AI Forensics

paid

Automated API testing and monitoring.

Key Ping-API features:

Ease of Use Comprehensive Monitoring Customization Integration