More forks are coming that piggyback the Bitcoin brand, so better collect them in one thread. I will edit this if needed.

• Fork: Bitcoin Cash (BCH): Aug 1 2017. https://www.bitcoincash.org/
• Fork: Bitcoin S2X (B2X): Cancelled
• Fork: Bitcoin Gold (BTC): Nov 12 2017. https://bitcoingold.org/
• Fork: Bitcoin Diamond (BTD): Nov 24 2017. http://www.btcd.io/
• Fork: Super Bitcoin (SBTC): Dec 17 2017. http://www.supersmartbitcoin.com
• Token: Bitcoin Silver (BTCS): Dec 2017. https://bitcoinsilver.io/