Consolidated Notifications from Various Services

On any given day, I check the following services for notifications: • GitHub • Slack • Linear • Email • Google Workspace (docs, sheets, etc.) • Probably others I can't think of now, which is the problem I'm trying to figure out a solution for

Does anyone know of a web app that consolidates notifications from various services?

At Google, I had an internal portal that did exactly that, but does it exist outside Google too?

I've done some research and found standalnoe browsers that claim to do that or desktop apps. However, I'm looking for a web app I can access on any device.