Postwoman - An online, open source API request builder
Postman - The Collaboration Platform for API Development
Insomnia REST - The most intuitive cross-platform REST API Client ð´
Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
soapUI - 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.
DreamCatcher Agile Studio - DreamCatcher Agile Studio is a centralized, dynamic and visually managed System of Record for product requirements and design related data, replacing Word and Excel documents.