Notion2Sheets is a Google Workspace Add-On that runs on the sidebar in Google Sheets and allows users to sync Notion databases with Google Sheets among other things.
It has been around since May 31, 2021 and has almost 15k users.
Super niche tool but pays the bills
I am building Packs for Coda, which is the name for integrations. Packs can bring data from third party services and define new formulas and actions, at this time I have built 23 of them connecting with services like Notion, Airtable, Bubble, Webflow and more
There is demand but the scale is not the one of Notion, the best Packs have around 1k workspace installs and then it depends on the number of users on each workspace but I don't have those numbers.
Were you ever worried of platform risk anytime while building this? Also, what would you do differently if you had to start all over this again?
I would think a little bit more about monetization from the beginning, at first there was just the free plan with artificial limits but nothing to test if users were willing to pay.