Log4Classicning

OS OpenSpace is a JavaScript? Application Programming Interface (API) that uses 'slippy map' technology, letting you dynamically pan the map by grabbing and sliding the image in any direction you like.

OS OpenSpace allows you to build Web 2.0 applications using Ordnance Survey data.

Grow your idea into something amazing and enhance your application using read-in data from the Web. Use the best mapping data available: take advantage of Ordnance Survey street level mapping and our highly detailed data. Show the world what you can do.

Use OS OpenSpace to interact, collaborate and share your ideas with other developers. Generate your own geographic content and become part of the community.

总的来说就是OpenSpace提供了一组类似GoogleMapsAPI一样的JavaScriptAPI，我们可以用他们提供的数据做Mashup，也就是GoogleMaps之外的另一个选择。

再插一句，很遗憾这些网站都不能按照OGC的标准来发布自己的地图服务，而是采用自己的JavaScript API进行封装，学习某个网站专属的API真是一件极其无聊的事情，何况还没有离线文档。