SVG Animation Assistant - Quickly and easily animate Inkscape SVGs.
Netlify CMS - An open-source CMS for your Git workflow
Hype - Using Hype, you can create beautiful HTML5 web content.
Cloud Cannon - Cloud Cannon turns Dropbox/Git-project into a CMS you can setup in seconds
Adobe Animate - Adobe Animate is a Flash, vector animation software.
Sanity.io - Sanity.io a platform for structured content that comes with an open-source editor that you can customize with React.js.