Looks like C++ Builder is still available. Its way expensive and the licensing for community edition is very prohibitive...if you make more than 5k or you have more than 5 people on your team you need to pay up. And you practically need to sell a kidney to afford it. That sucks because this IDE looks really neat, but its def not worth the money in my opinion unless you are a larger company already
Community edition: https://www.embarcadero.com/products/cbuilder/starter
Professional https://www.embarcadero.com/products/cbuilder