Orfeo ToolBox (OTB) is an open-source C++ library for remote sensing images processing, distributed under the CeCILL-v2 license. It has been initiated and funded by CNES (French space agency) in the frame of a program named ORFEO to prepare, accompany and promote the use and the exploitation of the images derived from Pléiades satellites (PHR). Orfeo ToolBox aims at enabling large images state-of-the-art processing even on limited resources laptops, and is shipped with a set of extensible ready-to-use tools for classical remote sensing tasks, as well as a fully integrated, end-users oriented software called Monteverdi2.