Open Source Software Library

ApostropheCMS is a full-stack content management system built with Node.js and MongoDB. Content creators can edit directly on live pages without switching between admin interfaces, while developers can build with modern JavaScript or use it headlessly with any frontend framework.

Jupyter Book is an open-source tool for building publication-quality books and documents from computational material. Jupyter Book allows users to write their content in Markdown files or Jupyter notebooks, include computational elements (e.g., code cells) in either type, include rich syntax such as citations, cross-references, and numbered equations, and using a simple command, run the embedded code cells, cache the outputs and convert this content into: a web-based interactive book and a publication-quality PDF.

The Littlest JupyterHub (TLJH) distribution helps you provide Jupyter Notebooks to 1-100 users on a single server. The primary audience are people who do not consider themselves 'system administrators' but would like to provide hosted Jupyter Notebooks for their students or users. All users are provided with the same environment, and administrators can easily install libraries into this environment without any specialized knowledge.

Orekit is a low level space dynamics library written in Java. Orekit is designed to be easily used in very different contexts, from quick studies up to critical operations. As a library, Orekit provides basic elements (orbits, dates, attitude, frames, ...) and various algorithms to handle them (conversions, propagations, pointing, events detection, orbit determination ...).

The most popular tool for teams to coordinate mapping on OpenStreetMap. With this web application, an area of interest can be defined and divided up into smaller tasks that can be completed rapidly. It shows which areas need to be mapped and which areas need a review for quality assurance. You can see the tool in action: log into the widely used HOT Tasking Manager and start mapping. This is Free and Open Source Software. You are welcome to use the code and set up your own instance. The Tasking Manager has been initially designed and built by and for the Humanitarian OpenStreetMap Team, and is nowadays used by many communities and organizations.

Eclipse Theia is an extensible framework to develop full-fledged multi-language Cloud & Desktop IDEs and tools with state-of-the-art web technologies.