Carousel Maker by Contentdrips - Create carousel posts for IG & LinkedIn from your browser.
CSSGram - Recreate Instagram filters with CSS filters and blend mode
Carousel Hero - Create carousels for LinkedIn, Instagram, and TikTok for free and without any sign-up.
Filtron - Create and share your own photo filters on Mac & iPhone
Instagram.css - Complete set of Instagram filters in pure CSS
Unused CSS - Easily find and remove unused CSS rules