I'm thrilled with how much time this tool saved me in both constructing my coursework and managing grading, especially with its fantastic auto-grading feature for worksheets. Highly recommended!
Flat - Online collaborative music score and tab editor, accessible from any device
NtEd - Music Score Notation editor.
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Musopen - Unlimited royalty free music sheets, tracks and textbooks 🎶
DaCapo Editor - DaCapo Editor is a free Open Source music sheet editor which allows to easily create nice looking partitions. It is available as a web application as well as a desktop application for Windows, MacOS and Linux.
MuseScore.org - Create, play back and print beautiful sheet music with free and easy to use music notation software MuseScore. For Windows, Mac and Linux.