GIFjam for Messenger - Animated GIF memes for Facebook Messenger
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Crumbles - Crumbles are like reaction GIFs with a way bigger vocabulary
Ralpha Image Resizer - High-speed image batch conversion tool
GIF Search on Twitter - Get ready to search and send GIFs in tweets and DM's
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.