This document summarizes a research note about the mobile application development platform (MADP) market. It discusses the different types of MADPs, including native toolkits, web toolkits, and specialized platforms. It also describes the various business strategies of MADP vendors, such as pure-play MADP vendors, enterprise software vendors, mobile application vendors, and OS platform vendors. The document evaluates several major MADP vendors, including their strengths and cautions. It emphasizes that the MADP market is rapidly evolving and advises enterprises to avoid long-term commitments to any single vendor or technology.