Does Udacity even have free courses anymore? When looking at the website, I see only nano degrees for which one has to pay. If they still offer the free courses, they've buried them quite effectively under all their non-free stuff.

(Also, I thought the quality of the Udacity courses was mixed - there was one on robotics that had quite nice content, but horrible Python implementations one had to work with.)

yes they do, and you can filter by the free courses in their engine:

https://www.udacity.com/courses/all

https://www.futurelearn.com/ is probably also up there, making it the big 4

edit It seems like most of these started with quality free courses, but later more and more the courses are changed to be a teaser trying to sell an expensive university course (at least expensive compared to the cost of many European universities)

Thanks.

I was not familiar with futurelearn so I will check it out.

I like to see materials you simply could not learn anywhere else like this: "Intellectual Property Management in the Food Sector: Safeguarding Your Trademarks in the Global Marketplace"

Futurelearn is worth checking out, I'm happy with all the courses I have taken there. It is so cool with all the different types of courses you find when using several platforms, I want to learn something about everything and everything about something.

I also found a link to https://www.mooc-list.com/ in my bookmarks for courses, not sure how updated it is

I find them to be substantially lower quality, so I left them out.

Whoah!

Okay, counter-point: in my experience Udacity has the highest quality content on the toughest technical subjects. To me, it is evident that an enormous amount of work has gone into making the lectures and exercises effective.

Coursera has more courses, and the quality varies more but some of them are excellent. In any case, Coursera lectures come from university partners we are all familiar with, so people can decide if they like the Andrew Ng Machine Learning Class or Geoff Hinton on Neural Networks.

I am not affiliated with either of them.

I've sampled courses from several and found the quality varying. Each will have one or more super high quality courses, then a swarm of forgettable ones. Which is only to say, don't rule out any particular source but instead consider the subject you are interested in, then do a little research (or sampling) to find the best offering wherever its hosted.

>Geoff Hinton on Neural Networks.

Brilliant as a researcher, not so brilliant as a teacher.

I loved his NN course. He explained everything very clearly, with occasional dry humor.