Clion (actually you do not need to purchase a license if you use the EAP (Early Access Program) license. Downside is you have to download a new one each month. But it’ll be free to use for 1 month, and you don’t have to pay $199 USD per year.
https://www.jetbrains.com/clion/nextversion/?fromIDE=
HackerRank
Terminator
Sublime
OpenCV
Python
Tensorflow
Slam mono
Slack
Fish Shell
Git/GitLab
C++11