The best thing about this software is that it can be used with any framework or language you use at work/home, so if I am working in Rails for example while doing my own testing using rspec-rails then its great!The worst part of knapasck pro toolkit are some errors which sometimes happen when running test cases but they don't have an option to fix them as far i know (or maybe not). It's free version has lot more features than paid one like scheduled jobs etc., also there aren;t many options available by default from their side too.. If possible try out both versions - Free & Paid ones!! There isn’ t much difference between these two except price tag :) So go ahead give trial first before buying anything else :D Its very good way keeping track where all our code written goes into production environment without having worry what changes might break something later down! I like that it's easy to use, has good documentation (and great support), is open source, and works well with most continuous integration systems out there. There are some features of knapsack pro that aren't as intuitive or robust as others in its category - for example, if you want to run more than one test suite at once, each will need their own knapsack instance. It can take quite awhile to get used to how things work, but once you do, it saves time by not having to manually schedule jobs.