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Open access movement has been changed dramatically in recent past years. And it has been supported by individual researchers, institutes, organizations and publishers too. The current paper is a comparative study of Open Access Repositories (OARSs) among three European countries Austria Germany, Switzerland registered in Open Access Repository Ranking (OARSR) (http://repositoryranking.org. ) website. It is also discuss and highlights about open access repositories, operational status, top ten repositories by collection wise and policy etc.. The study found that 181 unique open access repositories in three countries where as most of the open access repositories found from Germany160 (88.40 %) repositories. Furthermore, study revealed that 81 (44.75%) repositories are using OPUS software to develop open repositories. Most of the open access repositories are institutional repositories by nature.