Simplenote is good software. It’s a very simple cross-platform note taker with excellent cloud synchronization between devices. It’s perfect for drafting a few paragraphs of text, keeping a simple to do list, or jotting down an address while you’re on the phone. Under the hood it’s got some remarkably sophisticated features like version history, note sharing, etc. But all that is out of the way if you just want a box to type in.
Simplenote is free software, a gift from the folks at Automattic. They’re mostly known for WordPress but they have a surprising number of other public good services they run, mostly for free or with value-add purchases. Akismet, Longreads, Gravatar, Cloudup; I had no idea these were all Automattic. Good for them.