Ty-OS. It's now an Open Source OS to remix, mainly made by me. But before adding on, you need to go to this discussion page and ask to join. https://scratch.mit.edu/discuss/topic/425612/ the 2.x series OSs are codenamed "Starter" because they will have a main focus on the start menu.
Password: TY_OS_1 NOT THE NEWEST RELEASE! CHECK @Duckles1224's project!