Bitaps is a Bitcoin Block Explorer (Browser) with embedded wallet and merchant API for commerce. Bitaps provides a platform based on full Bitcoin node with blockchain network events.
Bitcoin Block Explorer is an open source web tool that allows you to view information about the blocks, addresses, and transactions created by Bitcoin.
Bitcoincharts provides a simple API to most of its data. You can use this API to include markets data in your websites, mobile apps or desktop applets.