You can add new items from different services like Youtube, Twitter, Google Docs, etc to Raindrop.io and vise-versa in automated way. To achive this you need to use glue-app: one of a two below:
IFTTT (If This Then That) allows you to link one service with another and come up with automated actions.
Naturally, when you combine these two, the end result is awesomeness. If you add a lot of stuff to Raindrop.io or even if you’re just getting started, check out the list below:
You can even create your own integrations! Just select Raindrop.io from apps list.