NotNotFound (NNF) is a Chrome add-on that ensures you never lose access to a webpage again. This handy tool automatically redirects you to a cached version of a webpage when you encounter any browsing errors like the dreaded 404 Not Found. With NNF, server errors and other web interruptions won't hinder your quest for the content you need.

One of the standout features of NotNotFound is its Recursive Cache System. It thoroughly checks through Google Cache, Archive.org Database, and The Coral CDN to find the most up-to-date cached version of the webpage you're searching for. This ensures that you have multiple options to access the content you need, even if the original site is experiencing issues.

NotNotFound also has an impressive development roadmap, with plans to include webcitation.org cache lookup, the ability to exclude a page/domain from the extension, and automatic cache lookups on bing.com and gigablast.com. The team is also working on developing extensions for Firefox, IE, Safari, and Opera, expanding the reach of this valuable tool.

Overall, NotNotFound is a must-have add-on for anyone who frequently encounters webpage errors. Its seamless redirection to cached versions ensures that you never miss out on important information. Plus, with its future development plans, this add-on is set to become even more indispensable in the future.