SFERA Solutions

SFERA Solutions builds secure communication systems based on Ukrainian national cryptographic standards (DSTU). Its flagship product is SKLO Messenger, an end-to-end encrypted native iOS messenger currently in TestFlight. The company also offers its own DSTU cryptographic engine, which implements Kalyna, Kupyna, DSTU 4145 and Edwards-curve key exchange.

The website names three ways to work with the company: trying SKLO, licensing the cryptographic engine, or commissioning a secure-communications project. It does not state prices or a revenue model. The company describes itself as a small software company and says it grew out of a larger engineering school in Kyiv that developed hardware and software for secure government communications.

SFERA Solutions s.r.o. is registered in the Czech Republic and was founded in 2022; the website lists Prague as its base. The company states that it now works from the Czech Republic. The website does not mention funding, headcount or open positions.

Product: SKLO Messenger, an end-to-end encrypted iOS messenger, and a DSTU-based cryptographic engine available for licensing.