Software License Agreement


Please read attentively the provisions of this Licence before downloading the SOFTWARE.

The use of the SOFTWARE by the Licensee means the latter has agreed with the provisions of this Licence.

The SOFTWARE as described thereof, property of the CNES and named « VTS » (visualisation tool for space data) has been registered at the Agence pour la Protection des Programmes (119 rue de Flandres, 75019 Paris) on 3rd April 2012 under the number 350009 On the SOFTWARE, CNES concedes to the Licensee, who can be a physical or a moral person, a non exclusive free Licence


The Licence is established in French and English. In the case of a dispute, the French version is the one that prevails. This Licence is governed by French law. If any dispute should arise, litigation shall be brought before the applicable courts.


The Licence shall last for ten (10) years renewable by tacit recondition. In any case, this License will not have a total length greater than the legal protection of copyright.


The present Licence is granted for worldwide. However, due to the sensitive nature of any product originating from the space sector, the Licensee agrees imperatively to strictly respect French legislation relating to export licences.


On the SOFTWARE, furnished in executable code with its documentation, CNES concedes to the Licensee a non exclusive right to use the SOFTWARE free of charge. This non exclusive right to use the SOFTWARE is defined as the execution of the program to obtain the requested operation. CNES concedes to the Licensee a non exclusive right to grant sub licences free of charge. The Licensee is not authorized to make copies of the SOFTWARE, other than a backup if it is necessary to preserve the use of the SOFTWARE.


The rights thereof conceded are submitted to several conditions :

  • The Licensee promises to abstain from any commercial use of the SOFTWARE as such. However he is authorized to supply services including this SOFTWARE.
  • The Licensee has no right to adapt, to transform, to modify or to translate the SOFTWARE.
  • On each copy of the SOFTWARE must be maintained the mention of the Licence and the copyright CNES. In case of publications, communications or presentations, the Licensee promises to mention CNES (Centre National d’Etudes Spatiales).
  • The Licensee must not use the SOFTWARE in a detrimental way for the image of the CNES, especially to its scientific and technical reputation.
  • The Licensee promises to enforce all provisions of this License to its sub-licensees.

If the Licensee would not respect all these conditions, he would immediately become a counterfeiter and could be sued for counterfeit.


The Licensee uses the SOFTWARE as it is provided herein at his own expense, risks, without any guarantee from CNES. Any guarantee of any kind such as a guarantee against counterfeit is here excluded. CNES can not guarantee the SOFTWARE is exempt from bugs, errors, defects or omissions and has no obligation of correcting any anomalies of any kind nor any deficiencies of the SOFTWARE. CNES can not guarantee that the SOFTWARE corresponds to the Licensee’s needs. In the same way, the CNES is not responsible for any loss of profit or revenue, or data, or any direct or vicarious damage, which could come from the use of the SOFTWARE or the inability to use the SOFTWARE. The Licensee accepts CNES can not be sued about this.


If the licensee doesn’t respect agreement’s provisions, without prejudice to all damages on CNES’s behalf, this license ends immediately. In that case, the Licensee will send back the SOFTWARE and all its copies to CNES and the Licensee will not be able to ask for any kind of compensation.

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To initiate and process downloads, the following information is used: the user’s name, the user’s company name, the user’s email address and the name of the requested package. The user’s email address will also be used to inform of new releases. The user can request to unsubscribe the newsletter or request the deletion of its personal information by sending a mail to