Enlarge / Curling, like the cURL project, requires precision and is underappreciated.

When you first start messing with the command line, it can feel like there's an impermeable wall between the local space you're messing around in and the greater Internet. On your side, you've got your commands and files, and beyond the wall, there are servers, images, APIs, webpages, and more bits of useful, ever-changing data. One of the most popular ways through that wall has been cURL, or "client URL," which turns 25 this month.

The cURL tool started as a way for programmer Daniel Stenberg to let Internet Chat Relay users quickly fetch currency exchange rates while still inside their chat window. As detailed in an archived history of the project , it was originally built off an existing command-line tool, httpget, built by Rafael Sagula. A 1.0 version was released in 1997, then changed names to urlget by 2.0, as it had added in GOPHER, FTP, and other protocols. By 1998, the tool could upload as well as download, and so version 4.0 was named cURL.

Over the next few years, cURL grew to encompass nearly every Internet protocol, work with certificates and encryption, offer bindings for more than 50 languages, and be included in most Linux distributions and other systems. The cURL project now encompasses both the command-line command itself and the libcurl library. In 2020, the project's history estimated the command and library had been installed in more than 10 billion instances worldwide.

Enlarge / A billboard showing Windows 8 in Times Square in New York at the Microsoft Store in October 2012. (credit: Personal photo from Steven Sinofsky)

On October 26, 2012 , Microsoft released Windows 8, a hybrid tablet/desktop operating system that took bold risks but garnered mixed reviews . Ten years later, we've caught up with former Windows Division President Steven Sinofsky to explore how Windows 8 got started, how it predicted several current trends in computing, and how he feels about the OS in retrospect.

In 2011, PC sales began to drop year over year in a trend that alarmed the industry. Simultaneously, touch-based mobile comping on smartphones and tablets dramatically rose in popularity. In response, Microsoft undertook the development of a flexible operating system that would ideally scale from mobile to desktop seamlessly. Sinofsky accepted the challenge and worked with many others, including Julie Larson-Green and Panos Panay, then head of the Surface team, to make it happen.

Windows 8 represented the most dramatic transformation of the Windows interface since Windows 95. While that operating system introduced the Start menu, Windows 8 removed that iconic menu in favor of a Start screen filled with "live tiles" that functioned well on touchscreen computers like the purpose-built Microsoft Surface, but frustrated desktop PC users. It led to heavy pushback from the press, and PC sales continued to decline.