CoinTracker is a portfolio & tax manager for cryptocurrency. It securely auto-syncs your transactions, presents your performance in a unified dashboard, and makes filing your crypto taxes a breeze. CoinTracker supports over 2,400 cryptocurrencies.
CoinShilling is a website that lists the activity of all top-50 crypto coins on Reddit, Twitter, Telegram and Steemit. You can, for example, keep track of the amount of posts/comments made on Reddit for a specific coin. And see when the interest in certain coins start to grow.
CoinBuzz is a news aggregator board for Cryptocurrency.
Coooins is a platform for tracking all crypto currencies, tracking ICOs, tracking crypto sub-Reddits and also adding a personal portfolio. You can also view videos and tweets related to each individual coin. There is no sign up required.