News

2026

Blog

Sigma v4.0.0

A new rendering engine and new customization APIs.

Alexis Jacomy ·

Guillaume Daudin, Béatrice Dedinger, Youssef Ghallada, and Paul Girard

RICardo · Sciences Po Centre for History

Guillaume Daudin, Béatrice Dedinger, Youssef Ghallada, and Paul Girard

RICardo · Sciences Po Centre for History

Paul and Benoît meet the Gephi core team in Prague, hosted by Charles University. On the agenda: finalizing Gephi Lite v1.1, improving the Gephi website, and discussing community management and project funding with the rest of the core team.

Gephi Lite · Gephi

Alexis Jacomy and Arthur Desaintjan

Gephi Lite · Gephi

Our yearly belgian tour, and a new occasion to meet people from OSRD and Sciences-Po médialab. Paul still helps managing the Open Research room, and we have one presentation. We also meet Arthur Desaintjan, the design intern who led the Gephi Lite v1 redesign.

2025

The first public meeting of the OpenRail Association community, which includes the OSRD project.

OSRD · SNCF Réseau

The first stable release of Gephi Lite, a major milestone for the project. It brings a new visual identity, a redesigned navigation that makes features easier to find, and a new data table.

Gephi Lite · Gephi

Paul Girard, Alexis Jacomy, Benoit Simard, and Mathieu Jacomy

Gephi Lite · Gephi

Mathieu Jacomy, Matilde Ficozzi, Anders K. Munk, Dario Rodighiero, Johan I. Søltoft, Sarah Feldes, Ainoa Pubill Unzeta, Barbara N. Carreras, and Paul Girard

Grounding AI · TANTlab and Technical University of Denmark

Paul Girard, Charlotte Ribeyrol, Arnaud Dubois, Julie Blanc, and Zoé L'EVEQUE

The Chromobase · Sorbonne Université and CNAM

Tool deployed for the research team.

LETTERBOX · C²DH

Opening of the Grounding AI exhibition at the Danmarks Teknisk Museum.

Grounding AI · TANTlab and Technical University of Denmark

Alexis Jacomy

Sigma.js · Sigma.js

Our yearly belgian tour, and a new occasion to meet people from OSRD and Sciences-Po médialab. Paul helps managing the Open Research room, and we have one presentation. We also meet for the first time Arthur from G.V(), who sponsored sigma.js' v3.

2024

An event organized by the OSRD team to announce the first industrial users of the project.

OSRD · SNCF Réseau

Jean Couteau and Paul Girard

Official launch of the Regâ‹…Arts application

REG⋅ARTS · Beaux-Arts de Paris, INHA, and LIR3S, UBE

Blog

Testing in a Headless Browser

A guide to unit testing and benchmarking TypeScript libraries targeting the browser from the command line

Alexis Jacomy ·

Includes a full rewrite of the programs system, and a reboot of the tooling.

Sigma.js · Sigma.js

Paul Girard, Alexis Jacomy, and Benoit Simard

Gephi Lite · Gephi

Our yearly belgian tour, and a new occasion to meet people from OSRD and Sciences-Po médialab. Paul helps managing the Open Research room, and we have two presentations.

2023

An internal SNCF event introduces the various OSRD business tools to the first users.

OSRD · SNCF Réseau

Regâ‹…Arts seminar on data visualisations.

REG⋅ARTS · Beaux-Arts de Paris, INHA, and LIR3S, UBE

Our yearly belgian tour, and a new occasion to meet people from OSRD and Sciences-Po médialab. Paul helps managing the Open Research room, but we don't present anything that year.

2022

We meet with the Gephi community. Benoit helps update the Neo4J connector, Alexis helps to develop a plugin for Retina export, and Paul helps to advance the specifications of the GEXF format. Also, we are starting to envision Gephi Lite.

Gephi Lite · Gephi

Diego Antolinos-Basso, Audrey Baneyx, Héloïse Thero, Benjamin Ooghe, and Paul Girard

An online edition of FOSDEM due to the COVID19 epidemic. Paul co-organizes and hosts the Open Research Tools and Technologies room.

2021

The "official" library to use sigma.js within React based applications.

Benoit Simard

Sigma.js · Sigma.js

An online edition of FOSDEM due to the COVID19 epidemic. Paul co-organizes and hosts the Open Research Tools and Technologies room.

2020

Blog

GRAND Stack: One schema to rule them all

In this article I will show you the power of the GRAND stack, for creating a web application on top of Neo4j where everything is typed, just by using your data schema.

Benoît Simard ·

Paul Girard, Guillaume Daudin, Loïc Charles, and Guillaume Plique

TOFLIT18 · LEDA, Paris Dauphine, PSL

Our yearly belgian tour, and a new occasion to meet people from Sciences-Po médialab. Paul co-organizes the Open Research Tools and Technologies room.

2019

Blog

OuestWare open-source tooling

Open source is one of OuestWare fundamental values. Our technical ecosystem had to be based on libre and open source tools. In this post, I present our choices regarding the daily tools our team needs.

Benoît Simard ·