Google Chrome, 2008
Truth is we quite easily could have selected a later version of Chrome. After all, Chrome only recently barged its way to the top of the heap, dethroning Internet Explorer and Firefox on the way to becoming the most widely used browser on the planet. But of the 30-some-odd iterations in its five-year history, none have been more impactful than the first.
Google took its time with Chrome, claiming for years that it didn't even want a browser, and then hiring a gaggle of ex-Firefox developers, cherry-picking the best code, and settling on the popular WebKit layout engine. Today, Chrome is minimalist, fast, and still trendy.