Forrester receives many inquiries from enterprise architecture (EA) leaders seeking information about tools for their EA practice. These inquiries run the gamut from simple questions about "who's out there" to more in-depth vendor comparisons. But inevitably, these questions boil down to the fact that EA practice leaders have a wide range of needs to satisfy with these tools, and they are unsure whether a tool will address their challenges or whether investing in any tool is worthwhile. This report provides a high-level overview of the market as well as the vendors and trends shaping the market. This report was originally published on August 6, 2013; Forrester reviews and updates it periodically for continued relevance and accuracy, most recently in December 2014.