If you're looking for simultaneous notation to tab to fretboard to keyboard, music development, try this site and their demo composition software. It is impressive and comprehensive.
As the intro page reads:
"TablEdit is a program for creating, editing, printing and listening to tablature and sheet music (standard notation) for guitar and other fretted, stringed instruments.
Additionally, TablEdit, while designed for guitarists, by guitarists, is not limited to guitar like other Tablature programs. Through ongoing consultation with experts on other instruments, TablEdit has developed support for harmonica, mountain dulcimer, diatonic accordion, drums, violin, tin whistle, recorder, autoharp, pedal steel guitar, and banjo (even taking into consideration the special aspect of the fifth string).
TablEdit can open/import ASCII, MIDI, ABC, Bucket O' Tab, Tabestry and Wayne Cripps files, as well as files created by earlier versions of TablEdit. Files can be saved in TablEdit format or exported to ASCII, ABC or MIDI formats."
It is certainly worth the time to give it a test run.