Catalyst, a turboprop aircraft engine under development by GE Aviation Catalyst, a line of automatic test equipment produced by Teradyne AudioCatalyst, a software package from Xing Technology Gentoo Catalyst, a tool to create Gentoo Linux environments Mac Catalyst, allows iPad apps to run as a Mac app See also Catalist, an American corporation Catalytic converter, a device in modern vehicles to reduce emissions Katalyst (disambiguation) Qatalyst Group, a corporate advisory firm