Songs
- Google spreadsheet with Guitar Hero song packs
- Chorus Encore – a user-friendly website for Guitar Hero songs
Ranking
- Score Hero – Guitar Hero high score sharing and tracking
- Google spreadsheet to estimate your Guitar Hero skill level
Games

Clone Hero is a free rhythm game, which can be played with any 5 or 6 button guitar controller, game controllers, or just your standard computer keyboard. Download the game, copy your song charts into the song folder and enjoy hours of fun !
Get CloneHero on the official website

Yet Another Rhythm Game inspired by beloved classics, delivering an immersive fret rhythm experience.
Get YARG on the official website

Guitar Hero World Tour: Definitive Edition is a content-filled, expansive mod for Neversoft’s Guitar Hero: World Tour.
Get GHWT: Definitive Edition on the official website
Charting

A charting program that was made with Clone Hero in mind. It features a lot of nifty bells and whistles. Those include (but are not limited to): export song.ini, solo section cues, playable in the charter mode, keys and mouse placement modes, extended sustains, and even drag and drop functionality.
The latest version can be found on the corresponding GitHub.