| Subject | English | Polish |
| comp., MS | federated instant messaging | federacyjne wiadomości błyskawiczne (Instant messaging with federated contacts) |
| comp., MS | instant messaging | wiadomości błyskawiczne (Pertaining to a message sent in real time through a network to a private chat area) |
| comp., net. | instant messaging | przesyłanie natychmiastowe komunikatów |
| comp., MS | instant messaging | WB, wiadomości błyskawiczne (A method of real-time communication over the Internet in which a sender types a message to one or more recipients and the recipient immediately receives the message in a chat area) |
| comp., MS | instant messaging session | sesja wiadomości błyskawicznych (A real-time communication over the Internet in which a sender types a message to one or more recipients and the recipient(s) immediately receives the message in a pop-up window) |
| comp., MS | internal instant messaging | wewnętrzne wiadomości błyskawiczne (Instant messaging with internal users) |