Technologies have influence upon competitive ability of enterprises in global and increasing competition. Espe-cially enterprises of so called high tech branches suffer from shorter product life cycles but longer periods of development. Enterprises in developed branches are threatened by technologies that may substitute the existing ones. In these circumstances an effective knowledge management and systematic technological forecasting with methodic support strengthen the competitive ability of the enterprise. Scenario technique and roadmapping are methods that register technological trends and reproduce the knowledge about technological development. In this article the suitability of the methods is assessed and both are integrated. The combination of scenario technique and roadmapping can use the advantages of both methods.
