The best alternatives to Draw.io are Isoflow, Arcentry, and Bubbl.us. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Draw.io?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Magic allows you to make extraordinary drawings using only your Mac's trackpad – it's one of a kind. By making use of Mac technology, Magic is the nicest and coolest way to express yourself using only touch and creativity.