beaconcha.in has been integration into the core ethereum testing infrastructure, see https://ethpandaops.io/posts/kurtosis-deep-dive/

furthermore our github repository has 811 stars & 423 forks. development of our core product is active and ongoing which can be seen using the commit history available at https://github.com/gobitfly/eth2-beaconchain-explorer/commits/master/ and https://github.com/gobitfly/beaconchain/commits/staging/