I recall that about a year ago, Hawkeye was being released as both a free version and a more powerful paid version.

我记得在一年前，Hawkeye 既有免费版本，也有更强大的付费版本。

youdao

But don't just use the free version.

不过别总是用免费版。

youdao

CodePlex code only contains the free version.

CodePlex上只包含免费版。

youdao

Millions more people read papers like USA Today and the New York Times for free on the Web than pay for a printed version.

VOA: special.2009.04.20

Next year, Microsoft plans a new version of Office that is both Web-based and free.

VOA: special.2009.07.17

Mikengreg Games now plans to sell banner ads on the free version of "Gasketball, " he added.

WSJ: When Freemium Fails

But now, GreenPrint is offering a free version of the software for non-business use, supported by advertising.

CNN: Software saves trees, cash and headaches, says creator

In February, RIM released a free version of its enterprise server for small and medium sized businesses.

WSJ: BlackBerry Gets Squeezed by Rivals