TuxGuitar(FREE) – besides other formats, it supports Guitar Pro files (up to version 5, i.e. .gtp, .gp3, .gp4 a .gp5), Tabledit (.tef) and Power Tab (.ptb).
MuseScore(FREE)– open source alternative to advanced softwares like Sibelius a Finale. Many options and customizations and a comprehensive support forum.
ScoreCloud(FREE) – the main functionality of the software is the automatic creation of music notation directly from music performance or recordings.
Guitar Pro – one of the most used and developed tabulature software.
TEFview(FREE) – opens and plays tabs in .tef format (Tabledit).
LilyPond(FREE) – text-based software for sheet music and tabs writing and editing. Feels like programming language rather than graphic editor.
HarmoTab(FREE)– free editor and player of tablatures for harmonica.
Sibelius – complex software for sheet music and also tabs writing and editing. It has huge possibilites of settings but it neccesary to study the manual a bit.
Finale – developed software, analogue of Sibelius.