iPad Challengers' Roundup - TheStreet

NEW YORK (

TheStreet

) -- From

Apple's

(AAPL) - Get Report

iPad

and

Cisco's

(CSCO) - Get Report

new Cius tablet to rumors that

Research In Motion

(RIMM)

is

building a large-screen BlackBerry companion,

2010 is undoubtedly the year of the tablet.

Heralded by Apple CEO Steve Jobs as a PC-killer, the iPad has raised the profile of tablet technology. With its sleek design and 10-inch touchscreen, the iPad, of which more than 3 million have been sold, has exorcised the ghost of failed tablets from companies such as

Compaq

and even Apple, whose first take, the Newton, was short-lived.

Unsurprisingly, the rest of the tech sector is trying to follow suit.

Apple's iPad

With

Nokia's (NOK) - Get Report tablet set for a fall launch

and

Dell

(DELL) - Get Report

in discussions to use

Google's

(GOOG) - Get Report

Chrome OS, here are a few of the more promising tablet technologies to keep an eye on.

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Cisco's Android-powered Cius tablet

Cisco's Cius business tablet

launched two weeks ago, and while it represents another notch in the networking giant's move toward becoming more of a high-end videoconferencing titan, it's no iPad killer. The Android-running Cius seems strictly business, with forward-facing and rear-facing cameras, multiple cloud-based applications, support for Cisco's business collaboration tech and a docking station that allows users to dial each other via phone.

Nokia's MeeGo tablet

Confirming what

TheStreet

reported in April,

Nokia has produced about 100 tablet prototypes

for developers, reported

Digitimes

. A Nokia tablet, which is likely to be powered by an

Intel

(INTC) - Get Report

chip via the new MeeGo OS, could potentially boost the No. 1 phone giant's mobile device strategy. It would be a welcome addition for

Nokia, which recently warned of another sales shortfall.

RIM's tablet

The

Wall Street Journal

recently reported that

RIM is testing a touch-screen smartphone

with a slide-out keyboard -- a device that could serve as a companion to the company's business-minded BlackBerry phone. Few details have emerged about the RIM tablet, but it's likely that the device will run on the company's business-centric OS, which, if done right, could give RIM a big edge for consumers wanting to run biz-friendly apps.

Google's Chrome OS tablets

With Google's

Android operating system

becoming more smartphone-centric, its Chrome OS is targeted at larger devices -- netbooks to desktop PCs. An open-source operating system, Chrome is described by Google as something "created for people who spend most of their time on the Web."

These are busy times for Google, which has

teamed up with Verizon (VZ) - Get Report to produce a Chrome-powered tablet

and is also

forging a closer relationship with PC maker Dell (DELL) - Get Report.

-- Reported by James Rogers in New York