GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
Giphy - Search all the gifs and make your own animated gif
GIPHY Says - Turn your words into animated GIFs!
CONV. - Convert YouTube video to MP3, GIF or MP4
Data GIF Maker by Google - Google's new tool turns boring data into GIFs!
Video Express Converter - This is an online service used to convert video from one format to another and apply various changes to the video before converting, like trimming it or adding subtitles.