I am relatively new to the UiPath ecosystem but have been working in Enterprise Automation for quite a while and am constantly experimenting with software tools.
Some I recommend as helpful and worth a Look.
VS Code hard to beat especially if you spend a little time leaning in and learning its myriad features and extensions
Oddly although I love VS Code once you have your favourite few dozen extensions loaded it’s overkill for pure .txt files and I still have Notepad++ associated for those. https://notepad-plus-plus.org/
Fiddler is great for troubleshooting Web Transactions https://telerik.com/download/fiddler
GitHub Desktop I like for it’s simplicity https://desktop.github.com/
this is as good or better as dozens of FileSync tools https://freefilesync.org/
WinMerge has saved my sanity a few times http://winmerge.org/
Hopefully some other gurus can add other tools they have found helpful in Automation and UiPath tasks.