OCEAN (the One-Click Edited-Access Network) provides an ever-growing index to the best history content on the internet. It takes you to the exact page on another site to find the information you require. The index already contains more than 35,000 links of this kind.

About half the links are to HistoryWorld, a prize-winning site with interactive ways of searching the past. Icons on the left of the index define the range of links to HistoryWorld content.