Hack vs TopShell: What are the differences?
Hack: A programming language for HHVM that interoperates seamlessly with PHP. Hack provides instantaneous type checking via a local server that watches the filesystem. It typically runs in less than 200 milliseconds, making it easy to integrate into your development workflow without introducing a noticeable delay; TopShell: *A reactive scripting language *. It is a purely functional, reactive scripting language. It includes modules for working with SSH, files, processes, HTTP and more.
Hack and TopShell can be primarily classified as "Languages" tools.
TopShell is an open source tool with 252 GitHub stars and 4 GitHub forks. Here's a link to TopShell's open source repository on GitHub.