Useful Programs

Development

• WinMerge: Quickly compare individual text files or entire folders (including binary files)
• MarkDownPad 2: Easily create MarkDown documents with a simple but powerful editor and previewer.
• Cygwin: Emulate Linux environment for testing scripts and running linux utilities
• SysInternals Suite: Useful programs for developers like Process Explorer

Utilities

• FileZilla: Simple S/FTP client
• Greenshot: Useful for creating documentation... or if you just take lots of screenshots
• Notepad++: Text editor with powerful features and language highlighting
• Keepass: Store and move logins and passwords securely 
• Paint .NET: Simple graphics editor with support for many file types
• IrfanView: Image viewer and more; supports many formats and good for conversions or batch operations 
• Daemon Tools Lite: Mount ISO files Site is kind of difficult to navigate... get the free Lite version and make sure you click the links carefully... some of them are ads... Installer may have offers.
• WinDirStat: Quick, light-weight to for scanning disk usage