In computing, cross-platform software (also called multi-platform software, platform-agnostic software, or platform-independent software) is computer software that is designed to work in several computing platforms. Some cross-platform software requires a separate build for each platform, but some can be directly run on any platform without special preparation, being …

The landscape for instant messaging involves cross-platform instant messaging clients that can handle one or multiple protocols. The following table compares general and technical information for cross-platform instant messaging clients in active development, each of which have their own article that provide further information.