No matter your weapon of choice from iPhone to iPad, BlackBerry, Android or Palm device, apps make every entrepreneur's life that much easier. But with thousands available for download on dozens of mobile gadgets, it can be hard to tell which are really worth their weight in microchips. Following are 10 of the top business apps for entrepreneurs to help you get started. All of them put the power to boost productivity right in the palm of your hand.

1. Square (Free, www.squareup.com) - Process credit card payments from anywhere using your iPhone, iPad or iPod Touch with Square's free card-reader accessory. An intuitive interface and single universal fee (2.75% on each transaction), with no monthly charges or contracts, makes it easy to use for both individual contractors, freelancers and small businesses. Visa, MasterCard, American Express and Discover are all accepted.

2. Evernote (Free, www.evernote.com) - Ever feel like the absent-minded professor? Stay on top of tasks with this service that lets you take virtual memos on-demand. Capable of storing text, photos and voice recordings, you can dictate, snap pictures and automatically synchronize updates across your computer, smartphone or electronic tablet. You can also tag notes by location.

3. Scanner Pro ($6.99, www.readdle.com) - Instantly transforms your iPhone into a portable, multi-page document scanner than can capture electronic copies of invoices, business cards and signed documents. From meeting notes to contracts, its high-quality image processing and automatic edge detection readily handle conversions. You can also produce and skim email-ready PDFs on-demand, set up custom page sizes and password-protect your files.

4. Flight Track Pro ($9.99, www.mobiata.com) - Staying on top of flight delays and gate changes is easy with this handy travel tracker. Import trip data from an airline confirmation email, and it will monitor your itinerary, alerting you to delays, cancellations and alternate boarding plans. The program also provides satellite and weather imagery and maps of airport terminals -- in case you need to sprint for a connection.

5. MightyMeeting (Free, http://app.mightymeeting.com) - Upload presentations and product videos to the cloud, then access them nearly anytime, anywhere with this handy demonstration tool. Allowing you to quickly call up clips and slideshows on your smartphone or tablet PC, it makes it easy to showcase sales pitches or market overviews on-demand. Users can also connect mobile devices to a widescreen projector for added impact.

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