Postman - The Collaboration Platform for API Development
FileZilla - FileZilla is an FTP, or file transfer protocol, client. It lets individuals transfer single files or batches to a web server. For many years, FTP was the standard for website design. Read more about FileZilla.
Insomnia REST - The most intuitive cross-platform REST API Client ð´
HTTPie - CLI HTTP that will make you smile. JSON support, syntax highlighting, wget-like downloads, extensions, and more.
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.
Yummy FTP Pro - Pro-level, fast, reliable FTP/S + SFTP + WebDAV/S client.