Avocado vs Lottie: What are the differences?
Developers describe Avocado as "An interaction design toolbox". Avocado is an open source interaction design toolbox built by IDEO. It enables designers to make quick interactive prototypes without writing a line of code. Built on top of Facebook's Origami framework, Avocado provides ready-to-use patches that can be easily combined to create fully-customized prototypes. Official announcement: http://labs.ideo.com/2014/05/27/avocado/. On the other hand, Lottie is detailed as "Easily add high-quality animation to any native app (by Airbnb)". Lottie is a mobile library for Android and iOS that parses Adobe After Effects animations exported as json with Bodymovin and renders them natively on mobile!.
Avocado and Lottie can be primarily classified as "Mobile Prototyping & Interaction Design" tools.
Lottie is an open source tool with 26K GitHub stars and 4.08K GitHub forks. Here's a link to Lottie's open source repository on GitHub.