MotionDen - Free online animated video maker
RightGIF - Less noise, better GIFs. A better /giphy for Slack.
Animaker - Animaker is an online do-it-yourself (#DIY) animation video maker that brings studio quality presentations within everyone's reach. Animated Videos, Done Right!
Slack Meme Bot - Spice up your team conversations with memes
Rocketium - A DIY video creation platform. Make videos in minutes using preset themes and templates.
Yarn for Slack - Drop TV and movie clips into your Slack chats