The enterprise market is still being led by Research in Motion’s BlackBerry devices, but Apple has edged out Palm as the handset of second choice by corporate buyers. AppleInsider, citing a report from ChangeWave Research, states that Apple has made some inroads with the corporate sector: Of interest is that RIM’s corporate share is heavily concentrated among larger companies with more than 1,000 employees, while three quarters of Apple’s share is among small- to medium-sized companies with under 1,000 employees.

Not too long ago, Apple has announced that it had licensed Microsoft’s Exchange ActiveSync technology to synchronize calendars, contacts, and appointments over the air (OTA) with the iPhone. That move played a large part in corporate acceptance of the iconic handset. With mixed reactions to RIM’s latest BlackBerry, the Storm, available exclusively through Verizon Wireless, Apple may not have that much to worry about from RIM in the corporate touchscreen market.

While other companies do license ActiveSync technology, like Nokia with its Symbian operating system, Microsoft’s decision to license the tech helps to boost adoption of Exchange in the corporate sphere. That decision may also come at the expense of Windows Mobile, which some pundits have found to be less consumer-friendly as more companies try to attack the consumer market, like RIM with its BlackBerry Pearl and Apple’s iPhone.