Most of us have been there, done that. Some might just be starting there. Others might have new ideas on what a CMS these days should be like. With the trend in headless and new available techologies, a lot of stuff is happening.
At the moment I am developing (as a concept for now) a new lean CMS (again), headless.
Every CMS needs certain functionality. For now I need a decent mediabrowser/upload function. Without wanting to reinvent the wheel, any good existing suggestions?