A community developed, Ubuntu based operating system that beautifully integrates the MATE desktop.
Sophisticated open-source Object-Relational DBMS supporting almost all SQL constructs, including subselects, transactions, and user-defined types. The world's most advanced open source database.
Java the general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
Fully-featured Java IDE written completely in Java, with many modules available, such as: debugger, form editor, object browser, CVS, emacs integration.
Payara Server is a drop in replacement for GlassFish Server Open Source Edition.
Open Source - Apache build manager for Java projects. Features a (POM) Project Object Model, extensible process plugin framework.
The all-volunteer ASF develops, stewards, and incubates more than 350 Open Source projects and initiatives that cover a wide range of technologies.
Excellent Java framework from Pivotal.