Tea is a proprietary language. Its interpreter is subject to a non-free license. A project called "destea", which released as Language::Tea in CPAN, provides an alternative by generating Java code based on the Tea code.
TeaClipse3 is an open-source compiler that uses a JavaCC-generated parser to parse and then compile Tea source to the proprietary Tea bytecode.
Hunter, Jason; Crawford, William (April 3, 2001). Java Servlet Programming: Help for Server Side Java Developers. "O'Reilly Media, Inc.". p. 423. ISBN 9780596000400 – via Internet Archive. tea programming language. 9780596000400 ↩
Huynh, Khue; Razzaq, Leena (January 1, 2002). "A Distance learning system for Tea programming". Major Qualifying Projects (All Years). https://digitalcommons.wpi.edu/mqp-all/5348 ↩
TeaClipse https://code.google.com/p/teaclipse/ ↩