Those who are interviewing, how do you manage interview/work meeting schedules?

While I interviewed, I found it very difficult to manage the changing schedules of interviews and work meetings. I had to pay a lot of attention to make sure I didn't miss any interview. The recruiters really helped out in sending frequent reminders. Still, given that most interviews would drag for months, I would almost lose context on the schedule.

Does anyone else face similar problems and find this scheduling process overwhelming ? Are there any solutions out there that can potentially help ?