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

ISO15390 Galactic Cosmic Ray Model FORTRAN implementation

The GCR ISO15390 model [1] is based on the semi-empirical GCR models of the Moscow State University (MSU) and is documented in . All formulas and parameters needed ...

Updated on: 24/02/2022
Created on: 22/02/2022
Version Control System: svn
Owner: ESA

DICTAT was developed to provide a practical engineering tool to address problems of internal dielectric charging. Electrical charging of dielectric materials in th...

Updated on: 24/02/2022
Created on: 22/02/2022
Version Control System: svn
Owner: ESA
Reference Radiation Simulation Scenarios

The Reference Radiation Simulation Scenarios includes models compatible with Monte Carlo simulations for radiation transport, including realistic and detailed geome...

Updated on: 08/04/2022
Created on: 22/02/2022

STARE is a real-time SofTwAre REceiver for positioning and monitoring of the fifth-generation (5G) new radio (NR) and long-term evolution (LTE) downlink signals. T...

Updated on: 15/09/2023
Created on: 09/12/2021
Multipactor Tool version 2.0.0

The key functionalities of the ECSS Multipactor Tool version 2.0.0 is the evaluation of the Multipactor risk on RF systems in single and multicarrier modes accordin...

Updated on: 06/10/2021
Created on: 30/09/2021
RTEMS SMP QDP (Qualification Data Package)

A prequalification toolkit allows end-users to qualify their space applications on bespoke (space-qualified) hardware. The primary focus has been on qualifying the ...

Updated on: 06/12/2022
Created on: 28/05/2021
opus (PUS-C Tooling)

The opus toolset, previously known as PUS-C-Gen allows to work with the PUS-C Standard, in particular: - Instantiate and tailor the standard for a new mission - C...

Updated on: 20/01/2021
Created on: 20/01/2021
Version Control System: git
Owner: ESA
SSAT (Sector Shielding Analysis Tool)

The Sector Shielding Analysis Tool (SSAT) performs ray-tracing from a user-defined point within a given Geant4 geometry to determine shielding profiles (i.e. the fr...

Updated on: 02/11/2020
Created on: 02/11/2020
Open Source Software Resources for Space Downstream Applications

This webpage provides a list of open source software resources for developing space downstream applications, in the following categories: Positioning & Navigat...

Updated on: 19/10/2020
Created on: 11/06/2020
RATIO-SIM (Rationalisation of Simulators)

  The specification, design and verification of modern space systems rely heavily on the use of system modelling and simulation, in support of the space systems e...

Updated on: 10/09/2020
Created on: 21/04/2020