Block explorers
Below is a list of third-party block explorer services displaying statistics about Ethereum proof-of-stake.
beacon.etherscan.io
beaconcha.in
beaconcha.in is a beacon chain explorer maintained by Bitfly.
ethstakers.club
Offers similar features to beaconcha.in, capable of monitoring 32,000 validators in real-time and indicating if any validator is set to propose in the next epoch.
Mirrors and Forks
This sections lists open source mirrors of forks of original, major block explorers.
Their respective Github repositories are: