FamiStudio

FamiStudio is a simple 8-bit chiptune music editor. It is targeted at both chiptune artists and homebrewers.

Features:

* Modern DAW-style UI with piano roll, no hexadecimal anywhere
* Instrument & Envelope edition
* Full Undo/Redo support
* Copy & Paste support
* Note drag & drop with audio preview
* DPCM sample editor
* Import from FamiTracker FTM & Text (official 0.4.6)
* Export to various formats (WAV, ROM, NSF, Video, etc.)
* Volume, fine pitch, vibrato effect tracks
* Slide notes (portamento)
* Arpeggios
* Multiple audio expansions supported.
* Desktop versions are also available for all major operating systems.

The app is free and open source.