Many familiar with BitShares may already have checked this out. The awesome part is it also works really nice on mobile.
It's a 'block explorer' for BitShares, which lets you look up virtually any data at all on the blockchain held in memory on a node which is feeding up the results to you in near-real time. You can check accounts, look up assets to trade, and perform many interesting kinds of analytics - or just click around from asset to issuers to other items, which could reveal hidden opportunities or great curiosities.
https://bitsharescan.com as a compliment to a BitShares.org account - sign up (referral link)