Topics:
Joe’s color coin project
One-way Aggregate Signatures (ZeroCoin Alternative)
https://bitcointalk.org/index.php?topic=290971.0
Android Bluetooth transactions
http://sourceforge.net/mailarchive/forum.php?thread_name=CANEZrP1xWjxcjNYAXKUvsCLgZ8z5CiLkox%3DaRPDHCJ%2BBvn%2BmHA%40mail.gmail.com&forum_name=bitcoin-development
NSA and ECC update
https://bitcointalk.org/index.php?topic=289795.msg3204734#msg3204734
C# Bitcoin RPC Library
https://bitcointalk.org/index.php?topic=89779.0
https://github.com/mb300sd/Bitcoin.NET
https://bitcointalk.org/index.php?topic=294807.0
https://github.com/BitKoot/BitcoinRpcSharp
Salvaging refund protocols from malleability attacks with P2SH
https://bitcointalk.org/index.php?topic=303088.0
Decentralized Anonymous Credentials (from the makers of ZeroCoin)
http://eprint.iacr.org/2013/622.pdf
Identity Protocol v1 (SINs)
https://en.bitcoin.it/wiki/Identity_protocol_v1
Android Bluetooth transactions
http://sourceforge.net/mailarchive/forum.php?thread_name=CANEZrP1xWjxcjNYAXKUvsCLgZ8z5CiLkox%3DaRPDHCJ%2BBvn%2BmHA%40mail.gmail.com&forum_name=bitcoin-development
Ripple went open source
https://github.com/ripple/rippled/tree/develop/src/ripple_core/nodestore/backend
https://ripple.com/forum/viewtopic.php?f=2&t=3718&p=18013#p18013