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

Advanced Data Handling Architecture (ADHA)

The Advanced Data Handling Architecture (ADHA) is a European on-board data handling (OBDH) end-to-end architecture based on standardized and inter-operable electron...

Updated on: 03/09/2025
Created on: 03/09/2025
A Space Mission MBSE Reference Model (MIMOREF)

A Space Mission MBSE Reference Model (MIMOREF) provides an elaborated MBSE model example for a real mission using the ESA SysML Solution that is extended by additi...

Updated on: 10/09/2025
Created on: 01/09/2025
Version Control System: git
Owner: ESA
ECSS SMP Level 1 and Level 2

The ECSS SMP Level 1 and Level 2 artefacts delivered as part of the ECSS-E-ST-40-07C and ECSS-E-ST-40-08C standards

Updated on: 28/04/2025
Created on: 28/04/2025
Version Control System: git
Owner: ESA
European Satellite Benchmark for Control Education & Industrial Training

This project is constituted of the sofware package of the "European Satellite Benchmark for Control Education & Industrial Training" and its corresponding use...

Updated on: 26/02/2025
Created on: 26/02/2025
Virtual Spacecraft Design (VSEE-Developer)

INTRODUCING VSD PROJECT Virtual Spacecraft Design (VSD) is a project that aims at enabling the Model Based Systems Engineering (MBSE) methodology for space system...

Updated on: 30/01/2025
Created on: 28/01/2025
Owner: ESA
Virtual Spacecraft Design (VSEE-User)

INTRODUCING VSD PROJECT Virtual Spacecraft Design (VSD) is a project that aims at enabling the Model Based Systems Engineering (MBSE) methodology for space system...

Updated on: 30/01/2025
Created on: 28/01/2025
Owner: ESA
COSMICS - Charged particles in planetary environments

MAGNETOCOSMICS simulates the motion of charged particles in planetary magnetic fields. PLANETOCOSMICS simulates the interaction of cosmic rays with solar system pl...

Updated on: 19/11/2024
Created on: 19/11/2024
Version Control System: git
Owner: ESA
EGS-CC

The European Ground System - Common Core (EGS-CC) is a system developed by ESA to provide a common ground infrastructure for multiple space missions. It is a framew...

Updated on: 28/05/2025
Created on: 05/09/2024
Owner: ESA
SPACE-SAT Plugin download

European Space Agency Public License (ESA-PL) Weak Copyleft (Type 2) – v2.4

Updated on: 15/05/2024
Created on: 15/05/2024
Owner: ESA
Tags: CCSDS
Verification and Validation of Real-Time Optimised Safety-Critical GNC SW Systems

The package includes the software deliverables developed under European Space Agency’s Technology Development Element (TDE) programme (ESA contract No. 4000136721...

Updated on: 28/03/2024
Created on: 28/03/2024