I'm new to developing web application software, though I used to develop mobile application software for years that went to millions of mobile devices and am familiar with different types of testing (unit testing, exploratory testing etc.) and what each type is good for. I have created CRM workflow rules, written Deluge functions and Client Scripts to automate the operations as needed. I find that I'm going nuts doing manual testing - tedious, error prone and takes a lot of time - and want to look for more automated ways of testing to ease the load on verification & regression testing whenever I change the implementation.  What do you use? Any suggestions on tools on what I can use?