JAG tables is a G Suite Sheet Add-on that allows a user to create a card based menu system that can be embed in to a site. JAG Tables is completely free to download and use, but also have a premium version that adds some extra functionality.
Google Calendar allows users to update events that automatically sync on mobile devices and websites.
Google Keep is a great tool for creating notes, to-do lists, and reminders that syncs with all devices and can be shared with other users.
Sign-ups & Gather Data
Sign up genius
Sign Up Genius is a free website that allows you to create appointment times, volunteer lists, and RSVPs.
Google Forms are a great tool to gather information. The data generates a spreadsheet. Once in the spreadsheet, the data can be analyzed, linked to a mail merge, and more.
Awesome Table lets you display the content of a Google Sheet into various types of views: From a simple table to people directories, Gantt chart views, Google Maps, card views… There are many possibilities to suit your personal and professional needs. With it, data in Sheets are shown in a more functional way and can be shared with viewers.