Online databases are an increasingly important aspect of biomedical research, and we are developing ways in which BioMed Central can contribute to their development. Firstly, we are committed to helping authors make all data associated with BioMed Central journal articles freely available online. Secondly, we are developing several new databases that draw together published information on particular topics.

We are maintaining a catalog of the numerous databases that are available online. So far, we have more than 1100 sites listed covering a wide range of biomedical topics from Alzheimer disease to zebrafish anatomy. Some of the databases contain experimental data; others provide synopses of published information. Most of the databases are freely accessible and should be of interest to researchers, teachers and students. Use the links in the menu on the left to read more about the catalog and to start exploring it.

We are creating a new library of images, movies, animations and illustrations that are useful for research and education. For more information and to see some sample material, visit the library's website

We are keen to form collaborations with researchers to create and publish databases that serve the needs of research communities. We can provide:

• a safe, permanent home for databases
• editorial and technical support in creating and maintaining a database
• help with the development and expansion of an existing database's content
• subscription-based access, marketing, and other commercialisation services

We welcome hearing from anyone who would like to create a database or who already has a database that could benefit from a new home. Please contact us if you have an idea to discuss.