Third-Party Add-ons for Google Docs
Rachel King (via Hacker News):
The tools and APIs for add-ons are available to everyone. The Google Apps team only steps in ahead of final publication to the store.
From there, developers can submit working prototypes of add-ons to Google Apps for admission. At launch, Google has 25 add-on partners. Add-ons will do everything from print labels to customize emails. For instance, PandaDoc is an add-on that allows you to create legally binding documents with digital signatures, notations and other features.
You use Google Docs and Sheets to get all sorts of stuff done—whether you’re staying up late to finish that final paper or just getting started on a new project at the office. But to help take some of that work off your shoulders, today we’re launching add-ons—new tools created by developer partners that give you even more features in your documents and spreadsheets.
Docs and Sheets add-ons are powered by Google Apps Script, a server-side JavaScript platform that requires zero setup.
It seems odd that we’re now at the point where Web apps are more customizable than desktop ones.