Last Updated on: 13th December 2023, 01:37 pm
Tlen.pl – an abandoned Polish internet communicator. It was an integral part of the o2.pl website. According to the license agreement attached to the program, it was released as freeware, but in fact it was an adware program.
Its communication protocol is a modified XMPP. However, connecting to the server was only possible using the original client or other clients designed to support the modified Oxygen protocol, not the standard XMPP.
The messenger was first unofficially abandoned by its creators, and in May 2016 – finally turned off.
By default, the Tlen.pl messenger enabled communication with users of the Jabber network (including Google Talk and iChat) and Gadu-Gadu. Its main functions were real-time chatting, messaging, chatting, file transferring, voice chatting, videoconferencing, and texting.
The conversations were encrypted with the AES algorithm, the keys were exchanged using RSA.
The messenger interface was very flexible. Based on XML, it allowed users to introduce minor corrections, as well as create their own additions such as skins, chat styles, icon sets, or sound sets (without much knowledge of the language, and practically zero thanks to the editors).