Famous First Websites - Discover what popular startup websites looked like at launch
Layout by Instagram - Combine multiple photos into a single image
Waybackpack - Download the entire Wayback Machine archive for a given URL
Likecreeper - Randomly hit like on a friend's horrifyingly old Instagram
Youtube++ - extension to show publishing date of related youtube videos.
Top Nine 2017 - Creates a collage of your top 9 Instagram posts for 2017