This is a bitcoin blockchain browser written in ruby using the bitcoin-ruby library.
It allows you to view the technical details that make up the blockchain, and also query them easily via the API.
The code is open source and available at block_browser under the terms of the GNU AGPL license.
This instance is currently running git commit c9c3aff62521c98fc1658b01fff597237cbe8263.
The current code is also available for direct download here: /source.
Donations motivate me to invest even more time that I don't have into this project ;) mugwYJ1sKyr8EDDgXtoh8sdDQuNWKYNf88
Also don't hesitate to send me any comments, bug reports, feature requests or other feedback you might have to the info@ address on this domain (webbtc.com).