http://gothub.r4focoma7gu2zdwwcjjad47ysxt634lg73sxmdbkdozanwqslho5ohyd.onion/PaddiM8/kalker
It runs on Windows, macOS, Linux, Android, and in web browsers (with WebAssembly). Website - Try it out here! Features Operators: + , - , * , / , ! Groups: () , [] , ⌈ceil⌉ , ⌊floor⌋ Vectors : (x, y, z, ...)