A calculator that solves many types of problems including
solving equations
computing derivatives and integrals
simplifying expressions
graphing equations 2d and 3d
reverse polish notation, algebraic and word based interpreter
infinite writing board for writing out equations
requires java 11 or more
A cross-platform, text-interpreting calculator written in the Java programming language. Runs on any computer with Java 6 or higher installed. Functions much like a Ti-84, but without the graphing utility.
C# Website system. This is going to be the "Newer" Internet, and even has a custom theme system. This is going to let users do "anything" that won't harm the client computer in any way.