TuxGuitar is an easy-to-use and open source music composer, multitrack tablature editor and player.
With TuxGuitar, you will be able to compose music using the following features:
* Tablature editor
* Score Viewer
* Multitrack display
* Autoscroll while playing
* Note duration management
* Various effects (bend, slide, vibrato, hammer-on/pull-off)
* Support for triplets (5,6,7,9,10,11,12)
* Repeat open and close
* Time signature management
* Tempo management
* Imports and exports gp3,gp4 and gp5 files

The license of this software is Freeware, you can free download and free use this music composer software.