Rebol is a cross-platform data exchange language and a multi-paradigm dynamic programming language.
License: Free
REBOL is a lightweight, easy-to-learn scripting language that excels in rapid development and functional programming, primarily suited for small applications and scripting tasks. In contrast, PHP is a robust, widely-used language specifically designed for web development, offering strong community support and extensive libraries, making it the go-to choice for building dynamic websites.