Faucet (GitHub: substack / faucet, License: MIT, npm: faucet) by Substack is a human-readable TAP summariser. You can pipe TAP text into the faucet command-line script, and it'll generate prettier yet concise output.
Substack has created some nice animated gifs that show what the results look like under various conditions. One of them even shows Mocha using tap through the -R tap command-line option.
The web interface uses the Ace editor, which supports traditional editor features like syntax highlighting. I think it's quite an audacious idea, but it might be a little dangerous to leave on public servers.
node-tumblr (GitHub: meritt / node-tumblr, npm: tumblr) by Alexey Simonenko is a Tumblr API wrapper for Node. It supports OAuth, and allows you to query posts, links, answers, and the other resources Tumblr provides.