- incca -- www.incca.org
- delos -- www.delos.info
- echo -- echo.mpiwg-berlin.mpg.de/home
- eu -- www.iue.it/ECArchives
- cidoc -- www.cidoc.icom.org
- collate -- www.collate.de
- cimwos -- www.xanthi.ilsp.gr/cimwos
- library of congress -- www.loc.gov./
- scriptorium -- sunsite.berkeley.edu/scriptorium
- tei -- www.tei-c.org
- open archives -- www.tei-c.org
- topia -- topia.telin.nl
