Squish is described as 'Testing the user interface of today’s applications is a very complex and error-prone task. Automating this task is challenging, but approached correctly very rewarding'. There are four alternatives to Squish for Windows, Linux and Mac. The best alternative is TestComplete. Other great apps like Squish are QF-Test (Paid), Micro Focus Unified Functional Testing (Paid) and Maveryx (Paid).
Make test automation more efficient and help developers and testers collaborate. This functional test automation software—formerly QuickTest Professional (QTP)—helps deliver quality software at the speed your business needs.