The European Space Software Repository (ESSR) is an ESA informational web portal created to promote reuse of Software - including Open Source Software (OSS) - and to provide all parties involved in the European Space software development (in particular SMEs) with access to results of previous investments.
Please click here to register and get full access to the ESSR.
Only a limited number of projects is visible to the non-registered users.
Registration is available for everyone residing in an ESA member state.

available projects

NeQuickG (Galileo ionospheric correction model)

The algorithm proposed for Galileo single-frequency receivers to correct for ionospheric delays is based on an adaptation of the three-dimensional NeQuick electron ...

Updated on: 08/12/2019
Created on: 22/06/2018
MLFS - Mathematical Library for Flight Software

Mathematical libraries are used in nearly any Flight Software and in particular in the AOCS/GNC and scientific algorithms. The common practice to manage the mathema...

Updated on: 04/09/2018
Created on: 12/06/2018
Science Operations Configuration Control Infrastructure (SOCCI)

As part of the Science Operations Department at ESA’s European Space Astronomy Center (ESAC) the Science Cross-Mission Support Office has developed the Science ...

Updated on: 08/12/2019
Created on: 04/06/2018
CCSDS EDS Reference Tooling

CCSDS Spacecraft Onboard Interface Services Electronic Data Sheet Reference Tooling. An Electronic Data Sheet (EDS) describes the format of information in a data ...

Updated on: 25/05/2021
Created on: 05/02/2018
Version Control System: git
Owner: ESA
OSRA - Onboard Software Reference Architecture

  The Onboard Software Reference Architecture (OSRA) is a comprehensive reference architecture for spacecraft onboard software which is intended to address the ma...

Updated on: 19/10/2020
Created on: 08/11/2017

Data compression evaluation tool for standard CCSDS compression algorithms used in ESA missions, i.e. CSSDS 121.0-B-1, 122.0-B-1 and 123.0-B-1. WhiteDwarf is an ap...

Updated on: 07/01/2019
Created on: 29/09/2017

The APSI Framework has been developed by ESA with the aim of creating a software platform to improve the cost-effectiveness and flexibility of the development of pl...

Updated on: 11/12/2019
Created on: 14/09/2017
ESA Operations software products

As part of the engineering activities related to the procurement of integrated systems required to support unmanned spacecraft mission preparation and operation, ES...

Updated on: 13/01/2017
Created on: 14/11/2016
MicroPython for LEON, pre-qualified version

MicroPython is a lean and efficient implementation of the Python 3 programming language that includes a small subset of the Python standard library and is optimised...

Updated on: 29/07/2019
Created on: 27/07/2016
Owner: ESA
Tags: Python LEON
NIR HAWAII-2RG Data processing algorithms - Benchmarking software

This software implements algorithms to process raw frames coming from a near infrared (NIR) HAWAII-2RG detector. The algorithms are implemeneted in floating point a...

Updated on: 04/09/2018
Created on: 24/05/2016
Owner: ESA