Evernote’s premise is simple: never forget a note again. The end result is a more-than-useful, multi-platform app that is certainly up to the task for taking care of all of your notes. And get this — the Mac beta actually feels like a 100% Mac app from the ground up, unlike some other multi-platform software. As mentioned before, yes, there are clients available for other platforms, but there’s also the web app that’s built brilliantly.

The Mac side. While the web app may be useful enough, the Mac client is where it shines the most. It actually looks like Apple’s own Mail app — only with virtual notebooks instead of mail accounts. So it looks sleek enough, but doesn’t require you to get used to a whole new interface. And it’s also completely integrated to the Mac — it has access to the iSight, a menu bar icon, and more.

Your notes. Works like you’d imagine for a note-taking app — enter a title, type a note, and then add some tags for categorization. The good thing is that Evernote works equally well with small and large annotations.

Your picture notes. Go ahead — hit that “New Snapshot note” button and let Evernote take control of your iSight. As long as the letters are big and clear enough, once the picture is synced to the system’s servers, you’ll also be able to search for keywords found within the picture. This feature is remarkably useful for those who continually flood their workspace with post-it notes. Smile!

Copy/Paste. There’s an Evernote menu bar icon available once the Mac client installed. From there, you can paste whatever piqued your interest, clip a screenshot, or do a quick search for something within your notes.

Your notes on the go. The most wonderful part of Evernote is how it keeps itself synced. No matter what client you’re using, or just the web app, your notes will always be available within your account.

Let’s say that you’re typing in your computer as today’s important lecture or business presentation takes place — when you’re finished and everything’s been synced, those notes will be available to any computer that has access to your account. That’s just one example of how Evernote can be used. Right now, while it’s in beta, it’s shaping to be something fantastic. You can sign up for it at the beta’s website.