Our API directory now includes 46 bitcoin APIs. The newest is the Btc.to API. The most popular, in terms of page visits, is the BitStamp API. Below you'll find some more stats from the directory, including the entire list of bitcoin APIs.

In terms of the technical details, REST and JSON lead the way. There are 33 bitcoin REST APIs and 2 bitcoin JavaScript APIs. Our directory lists 36 bitcoin JSON APIs and 5 bitcoin XML APIs.

The most common tags within bitcoin are 34 currency bitcoin APIs, 26 financial bitcoinAPIs and 22 exchange bitcoin APIs.

Bitcoin APIs have only appeared in our directory relatively recently, with 39 having been added in the last calendar year. As a result, we don't currently list any active bitcoin mashups. If you know of a great bitcoin mashup, please add it to our directory.

For reference, here is a list of all 46 bitcoin APIs.

50BTC API: Bitcoin Mining Service

AlphaPoint API: Digital Currency Exchange Service

BIPS API: Bitcoin Payment Service

Bit-Pay API: Bitcoin payment processing

Bitcoin Charts / Markets API: Bitcoin market data service

Bitcoin Payflow API: Virtual currency payment service

Bitcoin Sentiment API: Bitcoin Sentiment Polling Service

Bitcoin-Status API: Bitcoin Up-time Analysis Service

Bitcurex API: Bitcoin Trading Service

Bitfloor API: Bitcoin trading platform

BitInstant API: Bitcoin transfer service

BitMinter API: Bitcoin currency service

BitMyMoney API: Bitcoin Payment and Holding Service

BitPay Payment Gateway API: Bitcoin Payment Service

BitStamp API: EU bitcoin marketplace

BitTrust API: Internet commodity trading service

Block Chain Roulette API: Bitcoin Game Service

Blockchain Block Explorer API: Bitcoin and block chain information service

BTC to X API: Bitcoin Exchange Rate Calculator

BTC-e API: Bitcoin Trading Service

Btc.to API: Bitcoin Address Shortening Service

BTCData API: Bitcoin transaction data service

BTCtoX API: Bitcoin exchange rate calculator

Bter API: Bitcoin Exchange Service

CampBX API: Bitcoin Trading Service

CatLab Bitcoin Gateway API: Bitcoin Transfer Service

Coinbase API: Bitcoin wallet and management service

CoinCard API: Bitcoin to Giftcard Service

Crypto::Stocks API: Crpyto-Currency Crowdfunding Service

Easywallet API: Web-based bitcoin wallet

Eclipse MC API: Eclipse Bitcoin Mining Service

HashRack API: Bitcoin Mining Service

HASTUschon API: German products marketplace

HaveLockInvestments API: Bitcoin Trading Service

ICBIT Trading API: Bitcoin Exchange Service

Litecoin Global API: Virtual Currency Exchange Service

Litecoin Scout API: Litecoin Information Service

Mt Gox API: Internet commodity trading service

Ripple API: P2P Payment Service

RTBTC API: Universal Front-End Trading Service

StrongCoin Merchants API: Bitcoin Payment Service

TradeHill API: Internet commodity trading service

Unocoin API: Bitcoin Payment Service

Vicurex API: Cryptocoin exchange platform

VirCurEx API: Currency Exchange Platform

WalletBit API: Bitcoin Storage and Payment Service