1. Category

Bitcoin Links

24xBTC

E-currency Exchanger. buy, sell, withdraw, fund or exchange e-currencies and cryptocurrencies.
https://24xbtc.com/

Ledger Wallet

Ledger Wallet is a smartcard based hardware wallet bringing maximum protection level to your bitcoins without sacrifying usability or control.
https://www.ledgerwallet.com/

SeeKoin

SeeKoin is a search engine dedicated to Bitcoin, Blockchain and cryptocurrencies.
http://seekoin.com

Delta Investment Tracker

Portfolio tracker with crypto, stocks, mutual funds, ETFs, indices and more. Powered by eToro.
https://delta.app/

Satoshi Nakamoto Institute

I've been working on a new electronic cash system that's fully peer-to-peer, with no trusted third party. - Satoshi Nakamoto, 2008
http://nakamotoinstitute.org/

Blockchair

Blockchair is a blockchain search and analytics engine.
https://blockchair.com/

1ML

Lightning Network search and analysis engine
https://1ml.com/

AdBTC.info

Advertising platform with low fees. Pay per click, only unique clicks, and get only new visitors. Submit your Bitcoin related website for free in our Bitcoin directory, we will advertise you at all of our partners websites.
http://adbtc.info

HelloBlock

HelloBlock provides node hosting for both MainNet and TestNet, and gives HTTPS access to Blockchain Data through a RESTful JSON API.
https://helloblock.io

CoinLib

Live and historic cryptocurrency price and volume data, charts and cryptocoin rankings. Portfolio tracking, price alerts and news.
https://coinlib.io/

Coinpunk

Coinpunk is a project to build an open source, self-hosted DIY bitcoin wallet service you can run on your own server.
http://coinpunk.org/

Coinhive

Coinhive offers a JavaScript miner for the Monero Blockchain.
https://coinhive.com/

BlockTrail

Bitcoin API and Block Explorer. Bitcoin data and payments made easy for developers, enterprises and service providers.
https://www.blocktrail.com/

Bitcoin Marketplace on reddit

The r/BitMarket subreddit is for buying and selling virtually anything with Bitcoin.
http://www.reddit.com/r/bitmarket

Token Daily

Token Daily covers all the breaking crypto happenings in a newsletter.
https://www.tokendaily.co/