Managing a Sketch Library doesn't have to be hard. With the right tools, it can be easy to create, organize, and change your library without breaking your production flow.
This is a list of plug-ins I frequently use to manage a complex design library. Each of them solves a unique problem, but many are not limited to my specific action, so try them out and find what works best for you. Most of these are free and compatible up to Sketch 61.