Open2Study offers online courses in many different interest fields (not just IT or management related, but from scientific fields e.g. like chemistry).
I have not seen courses, that had been shorter than 4.5 hours, so each course have pretty decent work behind, after each course you can do a quiz, and as each course is divided to 4 modules, after each module there is a bigger assessment, where you need to reach at least 60% to get an online certificate of completion which is just another pro at this site.
Another pro here, that apart from the video recordings, you can find the transcript of the audio attached to the video, this is often very-very useful, if you want to make quick notes, or you want to read further in a topic and you want to be super sure about you spelled e.g. a name or method correct.
A small unique gamification is also part of this site, where you can collect badges, funny and motivating at the same time.
Most of the courses has a scheduled rhythm, at least seeing when you can perform the assessments, which occasionally either pressing or slowing you down. This is not the case with the self-paced courses of course.
I have not found a unique URL generated to your certificate, that you could link to your LinkedIn profile - this could be useful for many users.
Open2Study offers couple of free courses, try them, to have a feeling about the quality. The whole concepts behind is nice, and very easy to use.
This is a site provides online courses (free, paid, with certificates, and some are accredited) - obviously it helps to keep yourself trained and give you the necessary start in a topic. Courses are covering a good coverage of the targeted topics, so even if you are familiar with the topic itself, you still can get many valuable hints, that you can build in your daily work or in your hobby - to me this is the most essential part, to get fresh ideas, or pick up an old idea that I ignored for a while.