CodeApprove is a better code review tool for teams on GitHub: https://codeapprove.com
The frontend is Vue 2.0 and TailwindCSS. No other major libraries besides the Vue standards (router, store, etc).
The site is delivered by Firebase Hosting and the backend is all Firebase (Firestore, Auth, Storage and Cloud Functions)
I absolutely love this stack. It’s so simple to run and requires no maintenance. Plus the fixed cost is $0. To deploy I use manually-triggered GitHub Actions workflows.
The best part of the whole thing is the local dev experience. With the Vue CLI and the Firebase Emulators I can run my entire stack locally with hot reload across frontend and backend. When I push to production I am confident.