Carousel Maker by Contentdrips - Create carousel posts for IG & LinkedIn from your browser.
Timehop - Your digital life history
Carousel Hero - Create carousels for LinkedIn, Instagram, and TikTok for free and without any sign-up.
2016bestnine - Your best nine Instagram pics from 2016
Instagram.css - Complete set of Instagram filters in pure CSS
Likecreeper - Randomly hit like on a friend's horrifyingly old Instagram