GNU Wget - GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most...
Postman - The Collaboration Platform for API Development
HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
Offline Explorer - MetaProducts Offline Explorer is a Windows NT/2000/XP/2003/Vista program that allows you to...
TestComplete - TestComplete Desktop, Web, and Mobile helps you create repeatable and accurate automated tests across multiple devices, platforms, and environments easily and quickly.