Postman, Insomnia REST Client, soapUI, Fiddler, Proxyman, HTTP Toolkit, Graphical HTTP Client, Thunder Client, Hoppscotch, Milkman, Stoplight, Insomnium, Apibucket.io, RapidAPI for Mac, Runscope, NativeRest, HttpRequester, Restfox, REST Client for Android, RESTed, Nozomi, HttpMaster, Apidog, apptalk.ninja, RestCase, Resting, Iron Test, Assertible, rest-client, Restlet, JunoRestClient, TestMace, Bearer, RESTtest, GraphicalHttpClient, APICombo, Droptice, FRequest are some alternatives to Advanced REST Client.