Crystal (programming language)
Description: Crystal is a compiled, general-purpose, object-oriented programming language with a syntax similar to Ruby. It has static type checking, bindings to C libraries, and claims to have performance comparable to statically typed languages like C++ and Go.
Type: software
Pricing: Open Source
LeakBase
Description: LeakBase is a database of leaked emails and passwords that can be searched to see if your information has been compromised. It is controversial because the data was obtained illegally, though some argue it serves a public good by allowing people to check if their data is secure.
Type: software