The Great Suspender Alternatives, Similar

The Great Suspender is a lightweight chrome extension to help reduce chrome's memory footprint for users that like to have too many tabs open at the same time. This extension will automagically unload each tab while retaining its favicon and title text. A tab can be restored by clicking anywhere on the page when it is needed. This reduces the number of dom elements on the page and ensures no memory leaks or excessive javascripts are running. It also offers the functionality to automatically suspend tabs after a user-defined period of time similar to the extension tabmemfree. There is also a whitelist so that this auto-suspend functionality can be disabled for certain tabs.
It is now compatible with Session Buddy so that suspended tabs can be restored just like loaded tabs. It will also retain suspended tabs after a restart like the BarTab extension for Firefox, meaning that you don't have to wait for all of your tabs to reload when you restart chrome…. More Info »