3D Viewer for Drive is a Google Workspace Marketplace add on for opening 3D files stored in Google Drive directly in a browser. It supports formats including STL, OBJ, FBX, Rhino 3DM, GLB, STEP, and PLY. Users can rotate, pan, zoom, switch display modes, measure distances, inspect dimensions and model statistics, create exploded views for supported formats, and share view only links without installing desktop software.
Form Limiter: Response Limit & Choice Eliminator is a Google Forms add-on that closes forms automatically when a response limit is reached, on a schedule, or by a time limit, with timezone support and custom close messages. Its choice eliminator hides individual options in multiple choice, checkbox or dropdown questions as they fill up, so respondents only see choices that are still available. The add-on also sends email notifications, exports responses to a Google Sheet, and generates QR codes for sharing.
Mail Tracker for Gmail™ is a Google Workspace add-on developed by Qualtir that tracks emails and shows when they are opened. Users insert a tracker into an email from the Gmail composer window, then open the add-on and click a tracked email to see how many times it has been opened. It works on mobile and desktop, requires no sign-up, and is free of charge with paid features.
FORM PAL: Time Limit is a Google Workspace Marketplace add-on by AddonForge that adds time limits and access controls to Google Forms. Instead of sharing the form link directly, users share a FORM PAL link to a hosted page that checks rules before showing the form. It supports a countdown set in hours and minutes, per-email response limits and attempt counts, an optional access window, a custom welcome message, QR code sharing, and email notifications for new responses.
GMass for Gmail is a Google Workspace add-on by GMass, Inc. that provides mail merge and mass email functionality inside Gmail. Users can send campaigns to large recipient lists, personalize emails using Google Sheets data, schedule sends, track opens and clicks, and send targeted follow-ups. It also supports creating recipient lists from Gmail search results and sending as replies to prior conversations. The add-on must be paired with the GMass Chrome extension to launch campaigns.