I've been using Hacker News alert for a while for my blog, so I figured I'd build out the Product Hunt ecosystem with the same feature set. Right now, it only supports text notifications for domains mentioned on the front page, but if there's interest, I'm up for adding term-based alerts and support for mentions in the comments.
In terms of the actual product, I tried to keep it really simple. The styles are clean and familiar (h/t to the @rrhoover and the other PH builders), there's no backend, and the notify job just runs as a scheduled task on Heroku, which I can update with a git push. It's all open source and on Github here: github.com/jessepollak/phalert.
Instant 2FA