Notation Pad - Notation Pad is the Easiest way to write sheet music with notations on iOS/Android.
AnthemScore - Convert wav and mp3 to sheet music.
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Neuratron AudioScore - Polyphonic Music Recognition Software. Neuratron AudioScore Ultimate music transcription software.
StaffPad - Write music naturally on your Windows Surface Tablet.
Piano Scribe - Open-source demo to convert audio to MIDI using a neural network.