1. Category

Bitcoin Links

Rootstock

Smart contracts platform powered by Bitcoin. RSK is the first open-source smart contract platform with a 2-way peg to Bitcoin that also rewards the Bitcoin miners via merge-mining, allowing them to actively participate in the Smart Contract revolution. RSK goal is to add value and functionality to the Bitcoin ecosystem by enabling smart-contracts, near instant payments and higher-scalability.
http://www.rootstock.io/

Netki

Netki's Wallet Name Service securely solves the problem of unwieldy wallet addresses.
https://www.netki.com/

BitVPS

VPS and dedicated servers for Bitcoin.
https://bitvps.com/

Bitcoin Armory

An open source wallet management platform for the Bitcoin network.
https://bitcoinarmory.com/

The CoinFront

The CoinFront is your source for information related to Bitcoin, cryptocurrency, and the future of this exciting new movement. Our goal is to keep you informed of the latest developments to come out of the world of cryptocurrency, and to help promote it as a viable alternative to the current monetary system.
http://thecoinfront.com

Enjoy Bitcoins

Bitcoin directory for reviews of Bitcoin wallets, exchanges and other services supporting the ecosystem.
http://enjoybitcoins.com

CoinChoose

Overview of respective profitability of the alt coins.
http://www.coinchoose.com/

Coinality

Coinality is a job board where employers and job seekers can connect for job opportunities that pay in digital currencies such as Bitcoin and Litecoin. Jobs range from one-time to full-time and negotiations are handled independently between the two parties.
https://coinality.com/

Bitcoinx

Bitcoinx.com provides a variety of tools and charts, including financial and technical data, related to the bitcoin network and markets.
http://www.bitcoinx.com/

WalletHQ

Get email notifications when your wallet's status changes
https://wallethq.com/

PassGuardian

Store and share your secrets safely by splitting them into cryptographically-secure pieces. To reconstruct the original, combine a specific number of these pieces. It's simple, secure, and free.
http://passguardian.com/