There are many alternatives to RESTClient for Windows if you are looking for a replacement. The best Windows alternative is Wget, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to RESTClient and many of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to RESTClient are Insomnia REST Client (Freemium, Open Source), Postman (Freemium), cURL (Free, Open Source) and soapUI (Free, Open Source).
GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most widely-used Internet protocols. It is a non-interactive command line tool, so it may easily be called from scripts, cron jobs, terminals without X-Windows support, etc.
Postman is a tool that facilitates the development and use of APIs. Postman provides all the functionality needed to create or simulate API specifications and use the Postman Collection Runner to create tests.
cURL is a computer software project providing a library and command-line tool for transferring data using various protocols with URL syntax: supporting FTP, FTPS, SCP, SFTP, HTTP, HTTPS, TFTP, TELNET, DICT, LDAP, LDAPS and FILE.
Powerful, modern HTTP / REST client for Sublime Text. Requester has an expansive feature set, modern UX, powerful, elegant syntax and first class support for API testing and test automation. It runs on macOS, Windows and Linux.