PurpleJS vs Twisted: What are the differences?

Developers describe PurpleJS as "An alternative to Node.js for Java projects". PurpleJS is a simple and capable framework for creating performant web applications without leaving Javascript. It is created in Java to give the flexibility and performance Java provides. It's optional to use Java but it's required if you need to embed PurpleJS in existing applications. On the other hand, Twisted is detailed as "Event-driven networking engine written in Python". Twisted is an event-driven networking engine written in Python and licensed under the open source ​MIT license. Twisted runs on Python 2 and an ever growing subset also works with Python 3. Twisted also supports many common network protocols, including SMTP, POP3, IMAP, SSHv2, and DNS.

PurpleJS and Twisted belong to "Frameworks (Full Stack)" category of the tech stack.

PurpleJS and Twisted are both open source tools. It seems that Twisted with 3.44K GitHub stars and 878 forks on GitHub has more adoption than PurpleJS with 408 GitHub stars and 19 GitHub forks.