Bitcoin

Symbol - BTC

Algorithm - SHA-256

Total Coins - 21 millions

Block Time - 10 minutes

Coins per Block - 50

Coins per Block are halved every 210,000 Blocks

Difficulty Retarget every 2,016 Blocks

First Block mined on January 9, 2009

Status - Alive

Official Website

Download Windows Client (May not be the latest version!)
Download Linux Client (May not be the latest version!)
Download Mac Client (May not be the latest version!)
Source Code

Download Mining Package (Read the README.txt!)
Profitability Calculator
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The first cryptocoin ever launched