GWOSC: Gravitational Wave Open Science Center

<!--HTML-->The LIGO and Virgo collaborations actively pursue an open science program. Gravitational-wave strain data are publicly released through the website http://gw-openscience.org along with the information and tools necessary to understand and use them. This presentation will give details on the available data, on their format and on the tools to access them. We will also provide a global overview on the web traffic, audience and impact on this service on the science output, teaching and other applications.