I want to point out that since Offspring embeds NXT and has direct access to the database in the latest 0.4.0 release it contains a complete blockexplorer.
From the main menu (click "Block Explorer") you can enter and look up any account, transaction or block.
For each account you can see all transactions, aliases, blocks forged and assets. For each transaction you can see the sender, receiver, block and the JSON text. A Block windows contain a list of transactions, the JSON text and the generator account.
All these things (ID's) can be clicked (with your mouse) and opens the clicked transaction, block, account in a (the same) window to further explore.
There also is a list of recent blocks and a list of recent transactions (in the advanced section beneath the live active peer data), those lists are endless you can click 'next' on those tables until the genesis block. Again each transaction, sender, receiver or block can be clicked and they will open in their own window.
As I said on
https://nxtforum.org/alternative-clients/(windows-mac-linux)-open-source-cross-platform-offspring-237/ ..
OFFSPRING IS MOUSE FRIENDLY
Click Click Click
Everything is CLICKABLE. Click any account number, transaction id, block id etc..
Watch out for RSI. Cause it's addictive
But all kidding aside, Offspring is open source and we welcome anyone to come and join the development.
.. (runs on Mac OSX, Linux and Windows)
..Edit..
Forgot to mention that for each transaction in any of the lists it shows if it's a payment, alias, bid/ask order, issue asset.. Etc.. that saves at least some clicks on non interesting transactions (because my god almost 100000 transactions are a lot

)
Downloads: https://github.com/incentivetoken/offspring/releases