The minimalistic and austere Blackphone emphasizes deep security.
The Revolution comes with a 1.6GHz Intel Atom processor, a 4.7-inch screen, and either Google Android or Mozilla's browser-based mobile OS.
The Spanish company says Android KitKat 4.4 will be available on the Revolution in the "upcoming days," and it's getting ready for the next version of Mozilla's browser-based mobile OS.
The Geeksphone Blackphone promises to deliver high phone security with an accessible interface.
Whether you're anti-establishment journalist, a tabloid-dodging celebrity or just someone who like a bit of privacy, the GeeksPhone Blackphone keeps you anonymous. Go off the grid with our hands-on video.
Whether you're an anti-establishment journalist, a tabloid-dodging celebrity, or you just like a bit of privacy, the GeeksPhone Blackphone is a cell phone that won't sell out your data.
The Geeksphone Revolution, which lets you try out Firefox OS without burning your Android bridges, goes on sale on 20 February.
The Spanish handset manufacturer will use a 1.6GHz Intel Atom Z2560 chip in its top-end phone, set to arrive in the first quarter of 2014.
Running Firefox OS mobile software, the Geeksphone Peak+ offers a memory upgrade and truly open Web-based platform, untethered from iOS and Android.
The Spanish company's new Firefox OS phone will include a "high-performance processor" and can run Google's Android operating system, too. The company hints it could use an Intel processor.