Since the early 1990s, I've been collecting and categorizing web sites I've found useful. When I published the first version of this web site all those years ago, that list was the focus of the site. Back then, everybody on the web seemed to have the same idea. Eventually, some people took the idea more seriously, and formed companies like Yahoo to commercialize their work. I've kept plugging along with my humble, eclectic list all these years, and I can't seem to stop collecting. I hope you find it useful, too.

Databases

• Commercial object-oriented database systems
  • Objectivity
  • VOSS, an object database for Smalltalk from Logic Arts
• Elephant: an object database for Common Lisp
• Free object-oriented database systems
  • MinneStore, a database for Smalltalk
  • PLOB: Persistent Lisp Objects
  • WOOD: William's Object Oriented Database
• Gadfly: SQL Relational Database in Python
• HSQL: 100% Java Database
• MonetDB: Query Processing at Light-Speed: designed to provide high performance on complex queries against large databases, e.g. combining tables with hundreds of columns and multi-million rows
• Object-relational mappings
  • JDO: Java Data Objects, a standard for mappings from Java to persistent data stores, e.g. relational databases
  • Patterns for Object-Relational Access Layers
• ODMG: The Object Database Management Group
• Prevayler, an in-memory database that provides durability through logging
  • Advogato.org article introducing object prevalence
• Relational Databases
  • MySQL: an open-source relational database
  • PostgreSQL: a relational database that supports table inheritance
    • Ejip.Net PostgreSQL Database Windows Setup FAQ
• Third Manifesto: foundation for future database systems proposed by Hugh Darwen and C.J. Date