UCF file format is used for sharing various multimedia content generated by other software programs. This file format is used by Cisco WebEx software, a tool for teleconferencing, webinars, and other forms of online events. UCF file extension can be used to store PowerPoint and Excel documents, video and audio data, Flash animations, websites, and WRF recordings.

Although UCF file can store various types of multimedia data, to open this type of file a dedicated program for each format is needed. WebEx Universal Communications Toolkit addresses this problem and offers all-in-one tool that enables access to contents of the UCF file.