Guitar Pro is a Home & Education software developed by Arobas Music. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Guitar Pro:

MarydownEditor: Guitar Pro is a multitrack tablature editor for guitar, banjo and bass. Besides writing scores, Guitar Pro is a useful resource for guitarists from beginner to experienced levels to Progress , compose , or simply accompany themselves.

Tablature Editor
Scales Tools
Audio Playback
Digital Tuner
MIDI & ASCII Import/Export
Metronome
cakewalk guitar track
Chords Diagrams
Speed Trainer