#5 Sailfish

Jolla Mobile in many sources is an independent Finland-based designer, developer and seller of Smartphones. The company has developed Sailfish OS based on the core distribution of the Mer project, which continues the previous work of the MeeGo project.

Jolla continues the work started by Nokia that produced the Nokia N9 with the MeeGo version Harmattan. After Nokia abandoned their participation in the MeeGo project in favour of Windows Phone, the directors and core professionals from Nokia's N9 team left the company and formed Jolla, to bring a successor to MeeGo back to the mainstream market.

Sailfish includes a multi-tasking user interface that Jolla intends to use to differentiate its Smartphones from others and as a competitive advantage against devices that run Google's Android or Apple's iOS.

Jolla Mobile released the first software developer kit for Sailfish and started showing off the operating system at Mobile World Congress in Spain.

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