docs(readme): Foo integration (#8035)

readme.md

@@ -280,6 +280,8 @@ This section details services that have integrated Lighthouse data. If you're wo
 
 * **[Fluxguard](https://fluxguard.com/)** - Fluxguard provides website DOM change monitoring orchestrated with Google Puppeteer, and audited by Lighthouse. Fluxguard is a freemium product, with monthly monitoring of up to 75 pages for free.
 
+* **[Foo](https://www.foo.software)** - Foo continuously monitors performance with Lighthouse and provides a timeline chart by day, week, or month. Users can receive alerts via email, Slack, and PagerDuty. Foo is a paid service with several tiers of pricing.
+
 * **[HTTPArchive](http://httparchive.org/)** - HTTPArchive tracks how the web is built by crawling 500k pages with Web Page Test, including Lighthouse results, and stores the information in BigQuery where it is [publicly available](https://discuss.httparchive.org/t/quickstart-guide-to-exploring-the-http-archive/682).
 
 * **[Lighthouse Keeper](https://lighthouse-keeper.com/)** - Lighthouse Keeper monitors your pages' Lighthouse scores and notifies you if they drop below your thresholds. Lighthouse Keeper is a free service that monitors up to 3 URLs once per day.