Local send has worked really poorly for me, and so has every program similar to it open source or not. The only network file sharing program that has always worked (mostly) floorlessly for me is AirDrop.

tag studio It’s a file manager designed to use tags instead of files because tags are a much better system. It’s still in alpha and I haven’t actually tested it yet but I plan to use it instead of regular file managers once it becomes stable and well supported.