IndexedDB (wikipedia article link) is a key/value store available as a part of HTML5 standard.
Some useful links:
- Using IndexedDB @ Mozilla Developer Network (link)
- MDN: Using IndexedDB (link)
- MDN: IndexedDB (link)
- Chrome: Webkit IndexedDB tutorial (link),
- IndexedDB – The Store In Your Browser (link)
Projects that help work with IndexedDB:
- Polyfill (link), allows using IndexedDB APIs in browsers that support WebSQL only.
- IndexedDB jQuery plugin (link)