information:filtering, structural:summarization
Communications and IT

The Czech Republic ranks in the top 10 countries worldwide with the fastest average internet speed. By the beginning of 2008, there were over 800 mostly local WISPs, with about 350,000 subscribers in 2007. Plans based on either GPRS, EDGE, UMTS or CDMA2000 are being offered by all three mobile phone operators (T-Mobile, O2, Vodafone) and internet provider U:fon. Government-owned Český Telecom slowed down broadband penetration. At the beginning of 2004, local-loop unbundling began and alternative operators started to offer ADSL and also SDSL. This and later privatization of Český Telecom helped drive down prices.

On 1 July 2006, Český Telecom was acquired by globalized company (Spain-owned) Telefónica group and adopted the new name Telefónica O2 Czech Republic. As of 2017, VDSL and ADSL2+ are offered in variants, with download speeds of up to 50 Mbit/s and upload speeds of up to 5 Mbit/s. Cable internet is gaining more popularity with its higher download speeds ranging from 50 Mbit/s to 1 Gbit/s.

Two computer security companies, Avast and AVG, were founded in the Czech Republic. In 2016, Avast led by Pavel Baudiš bought rival AVG for US$ 1.3 billion, together at the time, these companies had a user base of about 400 million people and 40% of the consumer market outside of China. Avast is the leading provider of antivirus software, with a 20.5% market share.