Preply

Preply is a fantastic platform for online tutoring with lots of features that are available to enhance the teaching process (e.g. interactive whiteboard, flashcards, lesson notes, etc). The platform also offers a wide range of professional development opportunities for their tutors (free webinars and self-study courses that touch upon different topics around tutoring). Since you are not bound to any geographical place, you can use Preply to teach and earn money wherever you are in the world and whatever subject you are an expert in (languages, coding, music, etc)