Minimo, the Mozilla mobile browser, got a refresh this week, despite funding problems that make its future uncertain.

Minimo 0.2, available for free download, is compatible with Windows Mobile 5.0 and is smaller and faster than previous versions, according to early users who posted comments to the blog about the browser.

It also supports GPS, and has a cleaner user interface and a start page that includes bookmarks and search. Minimo is designed to be an alternative to the browser that comes with Windows Mobile, and its creators promote its speed and security, as well as features such as tabs and widget support.

The Minimo project, which isn't a Mozilla project but is hosted by Mozilla.org, was one of the earliest third-party mobile browser initiatives but seems to have been eclipsed by other developers, including Opera Software.

In 2004, when Minimo seemed promising, Nokia made an investment. But around the middle of 2004, users were asking if the project was still alive. The following year, Nokia announced that it was developing its own browser using open source components from Apple's Safari for its future smartphones.

Those ups and downs have been tied to financing, said Doug Turner, the leader of the project. "It is an open source project that has had some financial backing, and during those times, we push hard. When there isn't funding, we keep it alive because it is something we use," he said.

Now, even after the most recent release, the future of Minimo is unclear. In late December, Turner wrote in his blog that he wouldn't be dedicating much time to it in the future. "There are lots of browsers in the space, the market is tightly controlled by cellular operators, and the end users aren't using the browser," he added. "This will change, but not for a few years."

He points to a market share report that shows that all mobile browsers combined don't add up to 1 percent of web use.

Opera, which also offers a free browser for phones including those running the newest OS from Microsoft, Windows Mobile 6.0, has been attracting more and more users. In February, there were 216,283 downloads of Opera's browser for Windows Mobile Smartphone and Pocket PC editions, up from 142,502 in the same month last year, Opera said.

Turner argues that Minimo has also held its own. In February, it had 80,000 downloads, and that's of a version that has been around for eight months.

Minimo may end up heading in a different direction in order to compete better. "At the Firefox Summit, we had a brainstorming session that exposed some ideas that would help improve the lives of Firefox users that have mobile phones without having to build a full browser for the mobile handset. Things that we could do in a few months, rather than many years," Turner wrote in his blog. He plans to continue flushing out these ideas in the coming months.

Both Minimo and Opera face renewed competition from Microsoft, which just this week began previewing new technology that could be included in future versions of its mobile browser.