If you'd like a similar experience without being tied to a proprietary language and where the skills you develop can later be applied to other fields, I'd like

If you'd like a similar experience without being tied to a proprietary language and where the skills you develop can later be applied to other fields, I'd like to recommend our https://tonicdev.com https://tonicdev.com . It uses JavaScript (support for node 0.10 through 5), and instead of being one giant library made by one company, connects you to every version of every package on npm (that's 200,000+ libraries!). Anytime something is published on npm, it immediately becomes available on tonic, allowing you to work with the "global standard library". If you use something like D3, you can do math visualizations: https://tonicdev.com/tonic/d3-example-from-beaker https://tonicdev.com/tonic/d3-example-from-beaker . Alternatively, you can use async and await to play with APIs: https://tonicdev.com/capicue/iss/4.0.0 https://tonicdev.com/capicue/iss/4.0.0 . When you're done, you can hit download and run it on your own computer using node.