Blockchain explorer is a website which lists all information about blockchain.
Latest transactions, block details, transaction history by address, balance by address, etc.
Every blockchain in crypto world has their own blockchain explorers.
https://www.blockchain.com/explorer
There are several blockchain explorer open source projects which we can reuse when we develop our own explorers.
One of them is https://github.com/iquidus/explorer and we can use this for any blockchain which is forked from bitcoin.
Already developed 2 blockchain explorers for MONK and PIVX.
