This is my curated list of all the best apps that I found on linux while my journey with it. The list may extend or shorten as per my later experiences.
The cool space age text editor. atom.io
The scientific Pythoning web-browser interface. Project Jupyter
The python Scientific library. SciPy.org
For automatic compiling of style sheets. Koala
Crazy good music player. Lollypop
Another nice music player with support for online services. Tomahawk
System wide audio equalizer. Pulse Audio - webupd8
The best photo editor there is. Gimp
The amazing vector graphic app. Inkscape
If you liked painting on MSPaint and want something better. MyPaint
MyPaint isn't enough, try this and cry your eyes out. Krita
Since nothing's better. Firefox
Just to Draw tracks for Free Rider. Chromium
This thing is the standard messenger. Telegram
The twitter client for twitter addicts. Corebird
This is great for power users
A little app that launches great apps. Gnome Pie
The search launch app. Choose synapse if you need more power. Albert
The exterminator of the terminal emulators. Terminator
The great scratch pad, one file, super cool auto save, Fira Code And nothing else. FromScratch
Never change walls yourself, It will do that for you. Variety
Because Your screen shot matters. Shutter
Math the problem away. Qalculate
This is a simple bash addon which gives a powerline interface for git repos. oh-my-git
This triad gives beautiful message or fortune, great as a start script.