With the emergence of Internet various institutions started making available important legal materials in centralized online databases. Depending on the previous classification of data, available resources, degree of disclosure, each organization adopts its own way to present materials online. Oftentimes institutions providing similar data organize it in different ways (different titles, categories, search criteria, search engines, websites etc.) Additionally, some may do it differently due to budget restrictions, profitability/non-profitability of the project, etc. As a result, a user needs to adjust to interface and retrieval mechanisms of each online database. In the present thesis I illustrate state of the art in retrieval of legal sources online from the user perspective in order to contribute to the development of recently made available Legal Tools database run under the auspices of the International Criminal Court. The features that immediately distinguish this database from other international criminal law libraries are: 1) The database incorporates legal acts and case law from different jurisdictions (both national and international) related to international crimes; 2) It allows analysis of certain issue across national and international jurisdictions in various languages enabling its users to distinguish and compare judicial practice and situations, unlike the majority of legal databases focusing on specific jurisdiction; 3) It is free to the public and is organized with the aim to reduce costs of the International Criminal Court by distributing work among several research institutions. I will describe interface of Legal Tools website, the retrieval of data, the presentation of results, the organization of documents and I will compare it with the manner materials are organized on other websites and online databases (legal libraries, human rights advocacy websites, etc.)