With Filestar you get 0 different skills for working productively with Guitar Pro 3 Score (.gp3) files.
About .Gp3
Name
Guitar Pro 3 Score
Extension
.gp3
Format
Binary
Category
Audio
Developer
Arobas Music
Description
A GP3 file is a Guitar Pro 3 tablature score created by Arobas Music's Guitar Pro 3. It stores guitar, bass and drum tablature together with standard notation, lyrics and tempo, and MuseScore can import it.