Solid is a platform, built using the existing web. It gives every user a choice about where data is stored, which specific people and groups can access select elements, and which apps you use.
Appscope is a directory for progressive web apps that lists hundreds of web-based apps compatible with all devices.
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.