We are using this tool for our application which is used by different companies as well, so we can easily test it's functionality with other applications also without any issues or errors found while comparing results of both apps together. It has helped us alot when working at client side because they were unable able compare their own app data against ours due lack of time/resources available there. I think that overall its pretty good but sometimes some features might be bit difficult like how do i select multiple files? How much granular control over each file will give me? Also what if my code changes after uploading them into server then those uploaded codes won't show up correctly anymore! Thats one thing thats not very accurate from last few years ago version!! But still better than nothing right?!