HTML5 Client Side storage. In every browser. Right now.
Somewhere along the road to cloud based storage accessed through web applications a weary programmer sighed and pointed out that you would not have access to your data if you have no internet connection. The response was to add local client side storage as part of the HTML5 spec. Hence-forth you could keep a copy of all your data on your local machine for your web apps to access. Possibly the same programmer pointed out that while this was indeed a solution wouldn’t it require everyone to have fully HTML5 compliant browsers ? I imagine there was a lot of frowning from various people at this point. Never fear though because more clever programming chaps have come up with ways to have client side storage on all browsers. Yes, even those produced by Microsoft, which incidentally have had this ability since IE5.5.
Store.js – http://github.com/marcuswestin/store.js
Lawnchair – http://brianleroux.github.com/lawnchair/
PersistJS – http://pablotron.org/?cid=1557
MilkCrate – http://github.com/garrow/milkcratejs