Zoom
Reasons to boycott:
Recently shut down a U.S.-based human rights organization’s account when the organization was hosting an online event to commemorate the 1989 Tiananmen Square massacre (source)
Zoom has security flaws that make the app prone to attacks from hackers. This produces a lot of privacy concerns (source)
Zoom is headquartered in the United States, but its business operation heavily relies on China (source)