Open source
Timefold
Ghent, East Flanders
Open-source planning and scheduling
Open source
Belgian open source
An open-source product created or substantially maintained from Belgium.
What it doesn’t mean
It does not claim sole Belgian authorship. Open source is collaborative; the substantial maintenance is Belgian.
What we’ll take as proof
A source repository plus a maintainer or organisation record tying substantial work to Belgium.
20 with this verdict.
Sorted as catalogued. Each card links to its own evidence trail.
Open source
Drupal
Antwerp (project origin)
Content management framework started in Antwerp
Open source
Spatie open source
Antwerp
Hundreds of PHP and Laravel packages
Open source
iText
Ghent, East Flanders
PDF library written in Ghent
Open source
Hammer
Brussels
Parser combinators for binary formats
Open source
lazy.nvim
Ghent, East Flanders
Plugin manager for Neovim
Open source
Oh My Posh
Diest, Flemish Brabant
Prompt engine for any shell
Open source
Tryton
Liège
Open-source business software from Liège
Open source
Belgian eID middleware
Brussels
Open-source software for the Belgian identity card
Open source
EasyBuild
Ghent, East Flanders
Software installation framework for HPC
Open source
Gmsh
Liège
Finite element mesh generator
Open source
OpenJPEG
Louvain-la-Neuve, Walloon Brabant
JPEG 2000 codec from UCLouvain
Open source
Comunica
Ghent, East Flanders
Knowledge graph querying framework
Open source
Community Solid Server
Ghent, East Flanders
Open server for Solid pods and identity
Open source
MapComplete
Bruges area, West Flanders
Thematic OpenStreetMap editor
Open source
mkosi
Belgium
OS image builder from the systemd project
Open source
CasADi
Leuven, Flemish Brabant
Nonlinear optimisation and algorithmic differentiation
Open source
JobRunr
Leuven, Flemish Brabant
Background job processing for Java
Open source
FreeSewing
Antwerp
Made-to-measure sewing patterns
Open source
MISP
Belgium (project origin)
Threat intelligence sharing platform started in Belgium
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