Utilities
MakeNSISW (compiler interface)
Zip2Exe (convert ZIP to SFX)
 

Folders
Example scripts
Contrib (plug-in info etc.)
Language files
Modern UI language files

Documentation
NSIS Users Manual
FAQ (online)
Modern UI Readme
InstallOptions (custom pages)

Websites
NSIS Website
NSIS Wiki
Forum
IRC Channel
Bug Tracker
Development changelog