Likecreeper - Randomly hit like on a friend's horrifyingly old Instagram
Juicer - Juicer provides a solution to aggregate brands' hashtag and social media posts into a single social media feed on their website.
1stagram - Discover anyone's first Instagram post
Walls.io - Walls.io is an all-in-one social wall solution that allows you to collect, curate, and display content in an easy-to-customize feed. You can collect content from multiple social media platforms or let your audience post content directly on your wall.
Motion Stills by Google - Turn live photos into cinematic, beautiful GIFs
Curator.io - Curator is a brandable social media aggregator.