- C# - Used in Unity 3D eg. all of my mobile games.
- Java - Used in Android Studio eg. YouthNote (unreleased).
- Swift - Used in Xcode eg. YouthNote (unreleased).
- html & CSS - Used in Brackets usually eg. this website.
- PHP and SQL - Used in PHPStorm (I mostly use Firebase now though).
Software (other than ones already mentioned):
- Photoshop - For graphic design in various projects.
- Wordpress - Some people don't code their own sites.
- Blender - For 3D modelling for things like Unity games mainly.
- Firebase - Useful realtime database and notification support.
- Microsoft Office - Useful for data storage if need be and macros are useful sometimes.