This library includes a series of utility classes for

• extensible data structures (multimaps, AVL trees, disjoint sets, timeout queues)
• discrete math (polymorphic arithmetic, some group theory abstractions like rings and fields)
• convenient primitive to/from reference type conversion
• String(Builder)

and several simple but universal APIs for:

• service-based Remote Procedure Call (platform-independent, unlike Java's RMI)
• messaging pipeline (MVC based; console views, filters, loggers, front-end interface)
• tasks management & synchronization (MVC based; managers, executors, front-end interface)
• string searching (incremental search with listeners, suffix trees)
• some GUI:
  • setup dialogs (Swing-based)
  • progress bars (GUI extension to the task API)

The APIs are grouped into packages that can be imported as standalone JARs, to minimize dependencies.