1. Evernote
For cross-platformers
Evernote is available for almost every operating system and device imaginable and syncs seamlessly between all of them them. From text notes to reminders to image uploads, Evernote is versatile enough to cover almost every kind of note taking scenario imaginable.
2. Vesper
For the minimalist
Vesper is a simple but beautiful note taking app that's designed for quickly entering text, tagging it, and then sorting the text by the tags. Vesper currently syncs between multiple iPhones and a Mac app is in development.
3. Drafts
For text-shifters
Drafts is like a personal recorder for your notes. Enter text whenever it's convenient and then push it out to any service you like, including social networks and other apps, whenever you're ready.
4. Notability
For the studious
Notability lets you write, record, and sketch all together in perfect harmony. If you're listening to lectures or presentations and you want to keep track of everything, you'll want to try Notability.
5. Awesome Note
For an all-in-oners
Awesome Note combines your notes with your calendars, todos, and reminders. It syncs with all those services as well, so you're always up to date.
6. Letterspace
For the hashtaggers
Letterspace is a new kind of note app that lets you add not only hashtags, but mentions as well so you can easily find references when you need to.
7. Simplenote
For no frills note taking
Simple Note lets you write down your text, make your lists, and sync it all between iPhone, iPad, and Mac. Just like the name implies, Simple Note really is just that simple.
8. Microsoft OneNote
For the Office workers
OneNote brings Microsoft's Office note-taking about to your iPhone. If you like Evernote but you're all in with Microsoft, you'll want to check out OneNote.