I know about slip and the work Kenneth and guys are doing over there! Slip is amazing. Codedamn gives a lot more control over interactivity at an expense of a small learning curve. Try both and work with the one that fits you
We also have a free plan if you don't want to keep it under your own branding on your own domain. The $499/month (or any number we decide) plan is really for creators with high volume of sale (making $$$$/month) and don't want to pay 10% fee for every sale.
This is a relatively simple idea BUT do checkout "how" people have to attempt and submit challenges - on codedamn's in-browser IDE system - no downloads required for multi-file projects!
At codedamn, we're making a self learn-to-code platform. Offline coding boot camps work on teaching people coding by building real-world projects. With us, users can re-create real-world projects online with codedamn classrooms.
A single codedamn classroom consists of 7-14 codelabs, each being a single step towards a complete project for what the user is learning. Example - "Learn to code and deploy your blogging website with a database in 13 labs."
Apart from classrooms, we also have traditional video-based LMS. Classrooms and LMS are a part of our learning paths - a full roadmap of technologies to learn for a skillset, say, Frontend Web Developer.
Right now, we have four classrooms added, and 19 video courses present on the website. We will be adding more classrooms and content daily and would love to hear any feedback or suggestions you might have.
As a single developer behind the whole platform, I am looking for more developers to work with and move towards the business side of things. If you're willing to work on codedamn with me, let me know!