Giphy worked with Instagram to create a special search engine for a library of GIFs designed to be overlaid over photos and videos rather than being shared by themselves.

That's why Giphy, a startup that launched out of betaworks last month, is rolling out new tools to build out its library of awesome, high-quality gifs. See, Giphy is a gif search engine.

Giphy is a new GIF search engine founded by Alex Chung and Jace Cooke. Its stylish, stripped-down interface allows users to search for reaction GIFs using tags like "sad" and "bored." ...

The Internet Archive's vintage GIF search engine, GifCities, now supports keyword searches and searches by dimensions.