Channel Meter - Smarter YouTube Analytics
Waybackpack - Download the entire Wayback Machine archive for a given URL
ArchiveBox - The open-source, self-hosted internet archiving solution
Youtube++ - extension to show publishing date of related youtube videos.
SproutSocial - Sprout Social is a social media management tool created to help businesses find new customers & grow their social media presence. Try it for free.
YouTube Revenue Calculator - Discover your true income potential as a YouTuber