Skript is a Paper plugin which allows server admins to customize their server easily, but without the hassle of programming a plugin or asking/paying someone to program a plugin for them.
Beanshell scripting language
Lucee is a high-performance, open-source CFML server written in Java. Supporting JDBC, Caching, Parallelism, HTTP, ORM, REST, S3 and dynamic Java integration, Lucee is great for developers aiming to build fast, scalable applications, delivering faster startup, rapid compilation and better runtime performance.