ROS for robot navigation using C++ & Python on linux
C# for Windows applications
C++ for cross platform applications
AVR uController applications by C
PIC uController applications by C
ARM-stm uController applications by C
PLC applications by LD
Android applications by Java & AndroidStudio
Web applications by PHP & Javascript
Web design - HTML & CSS
Microsoft Access , SQLite , mySql , sqlServer Databases
Analog & digital electronic circuits designer
Altium Designer for PCBoards
CCNA & network+
Analysing electronic circuits by AltiumDesigner,LtSpice,pSpice
PWB(Backtrack) & PWK(Kali)
Simple Animations by 3DsMax
Creating games by Unity3D