Xenopus Laevis
- Database focusing on gene expression in the frog, xenopus laevis. Includes pictorial representations and expression domains.
- http://www.dkfz-heidelberg.de/molecular_embryology/axeldb.htm

Frog Genetics: Xenopus Tropicalis Jumps into the Future
- Article which explains why amphibian embryos are one of the favoured systems for elucidating the mechanisms of early development.
- http://faculty.virginia.edu/xtropicalis/overview/amaya.html

Salamander Genome Project
- Development of expressed sequence tags (ESTS) and a comprehensive genome map. Includes project overview, linkage maps, and conserved syntenies .
- http://salamander.uky.edu/

Indiana University Axolotl Colony
- Genetic stock center for supply of embryos, larvae, and adults to laboratories and classrooms throughout the United States and abroad. Includes history, news, and personnel.
- http://www.indiana.edu/~axolotl/