Tlen.pl was an adware licensed Polish instant messaging service. It was fully compatible with the main Polish Gadu-Gadu instant messenger. It was launched in 2001 and discontinued in May 2016. The communication protocol is based on open-source jabberd code, but it was modified significantly, making it incompatible with generic XMPP clients and servers. Among other features, Tlen.pl allows for voice chats, SMS sending and video conferences. The versions later than 4.0 allow for creation and usage of plugins. Since then more than 130 plugins have been created by the community. By April 2008 there were more than 1 500 000 registered users and 780 000 real users of Tlen.pl. More information...
According to PR-model, o2.pl is ranked 32,834th in multilingual Wikipedia, in particular this website is ranked 710th in Polish Wikipedia.
The website is placed before uaar.it and after elperiodiquito.com in the BestRef global ranking of the most important sources of Wikipedia.