Hong Kong Music Publisher

http://www.hkmusic.com.hk/web/

Book publisher

Recorder finger chart

https://www.yamaha.com/en/musical_instrument_guide/common/images/recorder/fingering_alto.pdf

Baroque fingering

Soundtrap

https://www.soundtrap.com/

 a cross-platform* collaborative music maker, similar to GarageBand

BandLab

https://www.bandlab.com/

 a cross-platform* music maker, similar to GarageBand

Flat

https://flat.io/

 a cross-platform* collaborative music notation editor, similar to MagicComposer