Developers have already flocked to Evernote’s note-taking platform in droves to provide its 11 million members with additional utility. Now, six new application makers will vie for the crown of most inventive Evernote application or integration and compete for $100,000 in prizes.

The six finalists, being revealed Tuesday, are Colorstache, MyWorld, Notablemeals, Sniptastic, Touchanote and Zendone. Community members are being encouraged to vote for their favorites.

The finalists range from the practical to the fantastical. Zendone and Colorstache are more sensible in nature, for instance. Zendone focuses on applying a “Getting Things Done” methodology to notes, while Colorstache lets Evernote users browse and search for notes by Color.

The flashier MyWorld and Touchanote add spunk and character to the Evernote experience. MyWorld gives Evernote users an augmented reality browser for viewing notes, and Touchnote makes NFC note-tagging and association possible. More details on all of the finalists are included below.

The finalists were selected based on a few key factors: finish and polish of the application, utility, originality and integration with the platform. Each will be awarded $5,000 for placing in the contest.

“Evernote currently has over 6,000 developers working on software and hardware integrations using out API,” says Andrew Sinkov, Evernote’s vice president of marketing. “We wanted to see what would happen if we did a developer competition as an incentive. We’re pretty blown away by the results. We had over 1,000 developers enter the competition from around the world.”

The grand prize winner will be chosen based on community votes, the votes of celebrity judges and live judging at the startup’s first-ever developer conference in August. The winner will revealed at the event — the Evernote Truck Conference — and will take home an additional $50,000 in cash. Evernote will also award two additional submissions with $10,000 each in the wildcard and student categories.

Check out the Evernote applications below and share your favorites in the comments. Should you wish to attend the event, Evernote is offering the first 50 Mashable readers who register via this link (with the “ETCMASHABLE” discount code) a 50% discount.

Colorstache

Colorstache, by Reno Collective, offers Evernote users a way to browse and search their notes by color.

Touchanote

Touchanote, by Wiseleap, connects the capture and organization capabilities of Evernote with the convenience of physical NFC tags. Easily associate any note in your account with a real world NFC tag.

MyWorld

MyWorld, by Wikitude, allows you to save the places you love in Evernote, then view them on a map in Facebook. You can then share your favorites with friends and view the places they’ve been.

Sniptastic

Sniptastic, from Andrew West, is a set of developer tools that let you share and organize code snippets.

Notablemeals

Notablemeals, from John McLaughlin and Kal Michael, is an iPhone app that makes it easy to capture memories about meals.

Zendone

Zendone is a personal productivity tool based on the Getting Things Done methodology. It offers a simple, well-designed interface for implementing the GTD workflow, using Evernote for collecting and archiving projects and tasks.

More About: evernote, evernote trunk, notes, startup, Web Development

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Evernote’s multi-platform note-taking service really took off in 2010, but 2011 is shaping up to be the startup’s biggest year yet, especially given the big boost it just got after debuting in Apple’s Mac App Store last week.

Evernote CEO and founder Phil Libin tells Mashable that because of the new marketplace, Mac has outstripped Android and iPhone as the biggest platform for new user acquisition.

The Evernote team hurried to ready an app store compatible version of its Mac app in time for the store’s launch, an effort that has paid off nicely in downloads and new users. On day one, Mac registrations were up 1800% over a normal day, resulting in 40,000 new Mac users and 90,000 total downloads.

Compare the 40,000 figure with Evernote’s 30,000 average daily new users metric (across all platforms) — remarkable on its own — and it highlights just how instrumental the store was in bringing new users. Evernote was previously adding very few Mac app users per day, Libin says. Now Mac is the biggest driver of new growth.

Libin estimates that for the first full week post-Mac App Store launch, Evernote saw 300,000 total Mac app downloads. Roughly 50% of these downloads came from users who had never previously registered for an Evernote account.

The popularity of the Mac app is also contributing to an uplight in downloads of Evernote’s other apps, according to Libin. Users are now discovering the note-taking service on Mac and learning that they can use it on other platforms as well, he says.

Libin recognizes that these early numbers are likely not sustainable, but he does believe the Mac App Store will help the startup hit the 10 million member milestone — it hit six million before the end of 2010 — sooner than originally anticipated.

More About: evernote, mac, mac app store, macintosh, startup