Ruby API Creating Extensions for SketchUp uses the Ruby API. Whether you’re creating plugins, extensions or add-ons (synonyms for the same thing) then you’ll need to know some Ruby. Post here if you’re creating an Extension and have any questions. Developer Job Board Welcome to the Extension Job Board! This category is setup to help connect people who need an extension written, with people who can write extensions. SketchUp SDK If you’re working creating importers or exporters for SketchUp then you’ll want to work with the SketchUp SDK. This is where you can discuss issues or ask questions about the process. Extension Warehouse for Developers If you’re trying to get your extension published in Extension Warehouse and run into signing up or submission issues, you’re in the right place to ask questions. For EW usage questions, head over here instead: Extension Warehouse Developer Announcements Hello SketchUp Developers! This little corner of the forums will act as our channel to communicate outbound messages to our community. Only the SketchUp team can create new posts here, so we can keep it neat and tidy. But anyone can respond to our messages, so that we can get feedback, heaps of gratitude, complaints, etc.