LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Mixeek - This website is for sale! mixeek.com is your first and best source for all of the information you’re looking for. From general topics to more of what you would expect to find here, mixeek.com has it all. We hope you find what you are searching for!
draw.io - Online diagramming application
Sencha Animator - I just learned about the halt to production and development of Sencha Animator.
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
GSAP - GSAP (GreenSock Animation Platform) is a suite of JavaScript tools for high-performance animations that work in all major browsers.