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UK CropNet is a collaborative project with a current membership of six groups making major contributions to plant genome analysis. The network was borne out of a need to harness the extensive work in genome mapping and sequencing, in order to facilitate the identification and manipulation of agronomically important genes and to lay a foundation for comparative analysis among crop plants and model species. In the last year progress has been made in the incorporation of new datasets and development of the ACEDB software used by each of the participating databases, the Arabidopsis Genome Resource, BrassicaDB, BarleyDB, FOGGDB (forage grasses) and MilletGenes. In particular, developments have been made to improve the distribution of information over the Internet. Configurable graphical displays of maps and sequences have been added to the web interface. A new client program gives all the functionality of the stand-alone ACEDB whilst getting its data transparently from a remote server. Three new displays have been written in Java. GridMap, which allows comparisons to be made between two sets of objects, a new genetic map display for linkage groups and a circular genome display to represent comparative data. All the resources developed as part of this project are distributed through the UK CropNet WWW server (http://synteny.nott.ac.uk/). The server also carries copies of 12 plant databases developed as part of the USDA plant database programme. All the databases and development sites are cross-queriable. To get a full appreciation of this resource come along for a demonstration at the computer displays. UK CropNet is funded by the BBSRC.