Maybe I'm wrong, but TutorRoom seem like the only ones out there that are willing to customize their software for you. They start off with their base system -- PC frontend/backend, Android, and iOS apps. These have all the main functions you would need (LMS, Scheduling, Courses, etc). But when you purchase their software, you purchase the ability to change it to suit your needs. I told them about a few features I was interested and they were happy to oblige at a reasonable price. Who else does that?