Guitar Pro 6 from Arobis Music is tablature software that allows you to create, edit, and playback your creations. I have been using it for a few months now and find it to be a great tool and easy to use. Even beyond creating simple tabs, you have the ability to add lyrics and record MIDI input for some advanced functionality. Plus, there are many websites, such as Ultimate Guitar that offer complete GP6 tabs that can be downloaded for playback. The downside here is that they are often not free and the artist and song choice are limited. Some of the highlighted features are:
Tunings that can be change from a extensive listing or by individual string.
Chord interface that allows chord building, identification, and playback.
Notation section. (Note: you may need to have some music theory or study to gain full benefit from this section.)
All in all, the application goes far beyond what most users would need for general purposes but for the price you get a whole lot of options. If there are any questions that you have from a user perspective feel free to reply and I will do my best to help.