Shareware Music Machine has undergone a transformation, doubling the number of music software categories. This is great news for guitarists as it's now easier to find plugins, recording software, tablature software and even tools for bassists.

The categories you may be interested in are:
Guitar
Tuners
Multitrack Recording
Metronomes
Notation
Bass Guitar
Auto Accompaniment
Slow Down Music
Tablature
Plugins - AU
Plugins - DX
Plugins - DXi
Plugins - Other
Plugins - VST
Plugins - VSTi