I recently released an open source version of CCE 4.0 (This is a very basic version of the full closed source version) at:
https://github.com/cryptocoinexplorer/Open-Source-CCE-4.0Example of this open source explorer is at:
http://openblc.cryptocoinexplorer.com/Full version of CCE (CCE 3.5 as the full version of CCE 4.0 has not been rolled out on cryptocoinexplorer yet) can be seen on any of the sponsored explorers at:
www.cryptocoinexplorer.comIf you wish to have an explorer setup and hosted on CCE, sponsorship information is here:
http://www.cryptocoinexplorer.com/sponsorYou could also set up an ABE explorer:
https://github.com/bitcoin-abe/bitcoin-abe