This paper investigates the suitability of contemporary DSL tools in the context of enterprise software development. The main focus is on integration issues between the DSL tool, the DSL implementation and the rest of the enterprise system. The paper examines different scenarios for integrating DSLs into the enterprise systems. A number of criteria for evaluating DSL tools are then extracted from these scenarios. These criteria are then used to evaluate five industry-strength DSL tools. Categories and Subject Descriptors D.3.4 [Programming Languages]: Processors; D.2.6 [Software Engineering]: Programming Environments--programming workbench General Terms Languages, Design Keywords Domain-Specific Languages