* [Mapstraction](http://mapstraction.com/)
* [Tile5](http://www.sidelab.com/projects/tile5/)
* [PolyMaps](http://polymaps.org/)
* [OpenLayers](http://www.openlayers.org/)
* [jump](http://eikes.github.com/jump/) - jQuery plugin
* [Leaflet](http://leaflet.cloudmade.com/)
* [gmaps.js](http://hpneo.github.com/gmaps/)

## Other

* http://www.distractable.net/business/disillusionment-and-graceful-exits/ - summarizes many different javascript and canvas or svg-based mapping libraries