Android and Apple's iOS rule the roost, but a bevy of others gun for the number three slot.
Articles about Mobile OS
Google wasn't planning to bring the latest version of its OS to older Nexus hardware, so developers decided to do the job themselves.
Google Play Services arrives for 99 percent of Android devices.
CyanogenMod is poaching some ideas from Android L, but hold your breath for a release based on Google's new OS.
Android L source code has hit the Android Open Source Project.
True to form, five months after launching its flagship, Samsung has followed it up with a smaller edition.
Apple's in-car system is coming to another vehicle brand from next year.
One of Microsoft's main goals with 'Threshold,' the next major version of Windows, is to win over Windows 7 hold-outs. Here's the latest on Microsoft's plan, according to my sources.
How could it have taken so long for Google to do this? At least their decision to use Knox makes sense, given that it has traction and credibility.
In the mobile market -- at least the higher-volume, lower-cost part of it -- the new Microsoft is looking to make money on services, not operating systems.
It's looking increasingly likely that Microsoft plans to launch its second-generation Android-based Nokia X phones early next week.
A Finnish television station has discovered that one time mobile phone giant Nokia paid millions in Euros to keep essential software for its Symbian operating system from being used to create malware.
Consumer Physics, an Israeli start-up is bringing Star Trek "Tricorder" technology to your mobile devices to open up an entirely new world of chemometrical apps.
Controversial Mozilla CEO Brendan Eich has left the open-source Web company, but its path forward remains unclear and the clock is ticking.
Microsoft officials admit they're contemplating whether to bring Microsoft's Cortana personal digital assistant technology to non-Windows platforms. Are the tradeoffs worth it?
Mozilla has joined the race for India's growing smartphone market.