Tab Manager Plus for Chrome - The only tab manager you'll ever need
Auto Tab Discard - Auto Tab Discard a lightweight extension that uses the native method (tabs.
Tabbie - The missing tab manager for Chrome
Firemin - Firemin will force Firefox to use less memory. It is safe to use, spyware free and completely free.
TabAttack - Export tabs as markdown - Make Chrome more efficient
BrightExplorer - Add a tabbed interface to Windows Explorer.