I'm the creator of the open source WebMidi.js library that simplifies usage of MIDI in the browser. I am starting work on the next version of the library and would love to hear some feedback from users (many of whom are lurking around here, I'm sure).
I set up a short survey to assess the community's need. It would be tremendously helpful to me if you could take a few minutes to fill it in. This is the address for the survey: https://forms.gle/bcahgNCGgwhcoJDD7