Embodiments of the present invention address deficiencies of the art in respect to multi-modal chat logging management in a collaborative environment, and provide a novel and non-obvious method, system and apparatus for generating a unified chat transcript for a multi-modal conversation in an instant messaging session. In one embodiment of the invention, a method of generating a unified chat transcript for a multi-modal conversation in an instant messaging session can be provided. The method can include establishing concurrent voice messaging and text messaging sessions between two conversants, receiving both voice messages and text messages between two conversants through the voice messaging and instant messaging sessions, and logging the voice messages and text messages in a single transcript of conversation between the two conversants.