JRuby vs DAML: What are the differences?
JRuby: A high performance, stable, fully threaded Java implementation of the Ruby programming language. JRuby is the effort to recreate the Ruby (http://www.ruby-lang.org) interpreter in Java. The Java version is tightly integrated with Java to allow both to script any Java class and to embed the interpreter into any Java application. See the docs directory for more information; DAML: Open-source programming language for writing distributed applications. It is an open-source programming language for writing distributed applications quickly, concisely, and correctly. It runs on the leading blockchain platforms which means that you can build your application now and pick which platform works best for you later.
JRuby and DAML can be primarily classified as "Languages" tools.
JRuby is an open source tool with 3.38K GitHub stars and 860 GitHub forks. Here's a link to JRuby's open source repository on GitHub.