Some block explorers:
RVN: https://ravencoin.network/api/addr/[address]
UBQ: https://ubiqexplorer.com/api/Account/[address]
ZCL: http://explorer.zclmine.pro/insight-api-zcash/addr/[address]
KMD: https://kmd.explorer.supernet.org/api/addr/[address]
HUSH: https://explorer.myhush.org/Api/addr/[address]
BTCZ: http://btczexplorer.blockhub.info/ext/getaddress/[address]
LUX: http://explorer.luxcoin.xyz/ext/getaddress/[address]