WebEx has been in web conferencing since the late 1990s. Zoom’s founder came from WebEx, and Zoom is competitive with WebEx in terms of stability, quality, and features.
Zoom typically beats WebEx in audio quality. Zoom defaults to automatic gain level audio, which means that a quiet talker’s volume is increased. Zoom allows expert users to bypass all audio processing and/or enable stereo sound. WebEx added automatic gain control and noise filtering in the new WebEx client in January 2021, but there is a long tail of WebEx users with the legacy client and therefore bad audio.
Zoom offers video filters including low light boost that work well in environments where auxiliary lighting is not available.