The History Press is currently telling the Titanic's story through a Twitter account, @TitanicRealTime. They will be chronicling the Titanic disaster as it occurred in real time with tweets from the captain, crew and passengers telling the story of this star-crossed voyage. (You can view the Twitter stream without an account.)
Here's a sample tweet:
wait to see her completed and on the ocean!
The same publisher also released an iPad app on March 15, Titanic: Her Journey. According to the website, the app “collates the knowledge of the world’s foremost Titanic experts in the most interactive way to date”. It includes rare archive footage, archive photographs of its construction, detailed ship plans and survivor accounts.