Signal Culture Apps
"The Signal Culture Modular Apps give you access to custom professional video and new media software applications for producing real-time experimental media artworks. Great for artists, VJ's, designers and hobbyists!" - link
#app
HiFidelity Music Player for MacOS
This is an open source music player for MacOS that people say is good - link
Staffpaper.io
“Write music on virtual manuscript paper” - link
Clop for MacOS
“As long as the Clop app is running, every time you copy an image to your clipboard, Clop will optimise it to the smallest possible size. The optimised image will have minimal to zero loss in quality, and will be ready to paste in any app.” - link