LazyJ is a rapid development framework for Java-based WEB applications - Java Freeware. LazyJ is a rapid development framework for Java-based WEB applications. It includes, a very fast template engine, page caching and data caching, database wrapper with connection pooling, database-backed sessions, time-bounded servlet execution, easy file uploading from servlets or JSPs, notifications framework (email and Yahoo! Messenger included) and many other nice features.