If you are a Theme Developer, you can build your themes with Site Editor very easily & quickly. You can add all your theme options with front-end options framework and you can add your modules for page builder and sync our modules with your design too.
If you are a Plugin Developer, you can build your Plugins in our front-end editor with front-end options framework.

Developer API

We have a sample module for developers guide which you can find at “Site Editor Plugin Folder/editor/extensions/pagebuilder/modules/api-test-module”
you can test “API test module” in our editor. It’s active by default.

We also have a sample options file for developers guide( you can use for theme options and plugin options in front end editor mode ) which you find at “Site Editor Plugin Folder/editor/extensions/options-engine/includes/demo/site-editor-sample-options.php”

Notice 1: To test this options in our editor you need to activate it on WordPress Admin > SiteEditor > General Settings > Developer Sample Options.

Theme Developers

if you need to a sample theme you can download it here. twentyseventeen-plus-lite Theme. but you need to find theme options and other features it at “Site Editor Plugin Folder/framework/includes/theme-support/themes/twentyseventeen” Folder