Flat

Flat, accessible at flat.io, provides an online music notation and composition platform that allows users to write, edit, and share sheet music directly in a web browser. The service targets music educators, students, and composers, offering tools for creating scores, arranging parts, and collaborating in real time. It includes a dedicated education product, Flat for Education, which integrates with learning management systems like Google Classroom and Microsoft Teams to support classroom music instruction, assignment creation, and student progress tracking. The platform supports playback, MIDI input, and export to formats such as MusicXML, MIDI, PDF, and audio, enabling interoperability with other notation software. Flat also offers APIs and developer tools that let third-party applications embed its notation editor and playback engine into their own products.