I needed to find a way to send webhooks after a successful deployment on Vercel, which wasn't a built-in feature. Since Vercel integrations can listen for deployment events, I created one to solve this. It's a simple tool hosted on GitHub that lets you set up custom webhooks for your Vercel projects. It's not on the Vercel Marketplace, and it's more of a workaround until Vercel natively supports deployment webhooks. Check out the GitHub repo for instructions on setting it up with Firebase Firestore.
I created a simple service using Firebase Functions and Superfeedr to post new entries from RSS feeds to our Google Chat room. Superfeedr polls RSS feeds, including those without Pubsubhubbub, and pings my Cloud Function with the new feed data. The function then parses this data and posts it to our Google Chat webhook. It's surprisingly easy to set up and works great for keeping our team updated with new content.
I'm looking for a few web services that don't seem to exist yet. First, a way to save my Twitter favorites to Instapaper (or similar services). Second, a webhook that sends content to Instapaper, as I dislike relying on third-party app integrations. Finally, a service that sends full RSS feed content directly to my email inbox in near real-time using pubsubhubbub. Existing services only send partial archives. If I can't find these, I might build them as open-source projects.