software development platforms

several different kinds of software development you can do for various platforms ~ environment:

Desktop Scripting

• AutoHotkey (for Windows).
• Automator (for Mac).

Web Development

• HTML and CSS
• JavaScript
• Server-side scripting:
• PHP
• Python
• Perl
• Ruby
• Web frameworks:
• Ruby on Rails framework (for Ruby programmers).
• CakePHP (for PHP programmers).
• Django (for Python programmers).
• jQuery (for JavaScript programmers).
• Toast responsive CSS grid (for CSS programmers).
• Web APIs, example: 
• Google Maps API
• Twitter API.
• Web Development for the Desktop
•  Adobe AIR

Command Line Scripting:

• BASH
• DOS (Disk Operating System) Command
• PHP
• Perl
• Python

Add-ons / Plugins / Extensions:

• Browser:
• Firefox
• Google Chrome
• Multimedia
• Office Applications
• Web Application:
• WordPress
• Drupal

Mobile App Development

• Java
• Objective C