In my 20+ year experience managing projects I learned that tools or systems don’t manage anything, people do, and if people need tools they’ll get them or make them - Ton Roosendaal, on #blendercoders / Krita code wiki / github / KDE

• Strokes queue - a stroke represents a complete action performed by a user.
• Vector instructions - Krita takes heavy advantage of the Vc library to speed up its brush strokes with CPU vector instructions.
• Modern C++ usage guidelines for the Krita codebase
• Optmizing CPP - extensive manual on writing optimized code.