Firefox reinvented the old-school Netscape browser, in a defining moment for Mozilla as an advocate for open Web technologies. Today, market share for Mozilla's most noteworthy project is slumping, and the luster of Firefox appears to be fading, no thanks to strong competition from Google Chrome.

But that doesn't mean innovation at Mozilla is on the wane. Mozilla has had a hand in many software projects -- some cooked up within Mozilla, others executed in conjunction with other organizations -- and continues to push forward its mission of an open Web.

Here are 10 notable projects Mozilla has played a key role in developing, each hinting at Mozilla's evolving vision for the Web.