This page provides a list of open source software resources for developing space downstream applications, in the following categories: Positioning & Navigation Earth Observation software and data Satellite Communications Other resources for open source, SDR, standards, cloud computing Open source catalogues and repositories A short description of each entry appears when hovering over the name (left column).Disclaimer: the information is provided as is without any guarantee, and ESA cannot be liable for any views expressed in this webpage as well as in the linked websites.

The European Space Agency (ESA) actively promotes and develops open source software across multiple space-related domains:

Key Areas:

  • Earth observation and satellite data processing tools like SNAP and Sentinel Toolboxes[1]
  • Positioning and navigation software including GNSS-SDR and RTKLIB[1:1]
  • Satellite communications tools such as GNU Radio implementations[1:2]
  • Machine learning and data analysis frameworks like TerraMind[2]

ESA’s Open Source Policy establishes clear guidelines for software distribution:

  • Software can be licensed for use within ESA member states or worldwide[3]
  • ESA uses its own license types (ESA Public License and ESA Community License) with varying levels of copyleft restrictions[3:1]
  • The policy aims to increase software quality, reduce costs, and foster collaboration[3:2]

Recent Initiatives:

  • The BioPAL project for the Biomass satellite mission, using open source Python code for processing P-band radar data[4]
  • Partnership with IBM to release ImpactMesh, a dataset and tools for mapping floods and wildfires using satellite data[2:1]
  • The European Space Software Repository (ESSR) serves as a central hub for sharing space-related open source projects[1:3]

  1. ESA - Open Source Software Resources ↩︎ ↩︎ ↩︎ ↩︎

  2. IBM - IBM and ESA release new dataset ↩︎ ↩︎

  3. ESA - Open Source Policy ↩︎ ↩︎ ↩︎

  4. ESA - Biomass mission open source project ↩︎