The idea of a Single European Electronic Market (SEEM), described by the European Union and further elaborated within the European Project SEEMseed seems to be a good chance for Small, Medium and Micro Enterprises to seamlessly participate in the electronic market today and in the future. Even individuals may take advantage of the SEEM idea to actively benefit from electronic business within Europe. The overall goal of realizing a Single Electronic European Market is not easy attainable because of high complexity and fragmentation of the areas of interest. Under patronage and sponsorship of European Commission (above all 6th and 7th Framework Programme), several R&D project are currently running or soon to be started in order to foster the SEEM idea. Similar to this, CEN / ISSS has developed the project WS / eCAT. In this paper, we will describe and analyze the current efforts in this area and we will describe a meta-project called Simple On Line Catalog - to connect results of the existing projects, initiatives and studies and to cover them with an integral user interface, accessible to SME and Individuals across the borders and languages.