We're a small marketing agency with a very few employees. So we need a simple tool to track leaves and absences. BuddyHR helps with that. I personally love how it notifies me via slack and email so I don't have to open yet another tab in my browser.
I've been using it since the very early beta on a request of my friend. Never though that it would be useful for such a small enterprise. But it is. Good luck to you, guys!