CHAOSScon Europe 2023

Co-located with FOSDEM

Brussels, Belgium

February 3, 2023

About CHAOSScon

Learn about open source project health metrics and tools used by open source projects, communities, and engineering teams to track and analyze their community work. This conference will provide a venue for discussing open source project health, CHAOSS updates, use cases, and hands-on workshops for developers, community managers, project managers, and anyone interested in measuring open source project health. We will also share insights from the CHAOSS working groups on Diversity and Inclusion, Evolution, Risk, OSPO Metrics, Common Metrics, and Metric Models.


Bedford Hotel & Congress Centre
Rue du Midi 135 Brussels, 1000, Belgium

Phone: +1 469-610-3608


February 3rd, 2023

Time: 8am to 17:30pm CET (UTC +1)

Live Streaming

This CHAOSScon will not be live streamed.


Registration for the in-person CHAOSScon event is done through Eventbrite.

Register Now!

Event Details

Code of Conduct at Event

All speakers and attendees are required to adhere to CHAOSS's Code of Conduct. Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting

For Emergency Services at the event, please dial (112)

Social Media and Conference Updates

Subscribe to our Slack Channel #CHAOSScon for updates about the conference and to coordinate meetups.

Follow @CHAOSSproj and tweet #CHAOSS #CHAOSScon during the Summit and CHAOSScon to let everyone know how important open source community health is!

Diversity Access Tickets and Family Friendliness

Please email Elizabeth Barron for more information on how to get a Diversity Access Ticket.

The CHAOSScon team plans to host an informal family friendly outing after CHAOSScon, but the details are to be determined. We recommend you join the #CHAOSScon slack channel for up-to-date information.

Optional and Complementary Event: OSPO++ @ CHAOSScon: Measuring OSS in Universities

There is a separate event happening during the lunch break of CHAOSScon that may be of interest to CHAOSScon attendees, called OSPO++ @ CHAOSScon: Measuring OSS in Universities. Registration is free but required, and this event will last for 90 minutes. You can register and learn more about this event here.


February 3rd, 2023 from 8:00 to 17:30 Central European Standard Time

Time Topic
8:00 Check-in and networking and Coffee
8:30 Welcome
8:45-9:15 Expert Panel: How to use Metrics in your Context (D. Foster, S. Goggins, I. Vancsa)
9:20-9:55 Interactive Session 1 - CHAOSS and Open Source Program Offices
9:55-10:15 Coffee and Tea Break
10:15-10:50 Interactive Session 2 - Future CHAOSS Efforts
10:50-11:40 Lightning Talks / Report out and group discussion
11:40 Closing
11:55 Group photo
12:00-13:30 LUNCH (attendees on their own)
Optional Event: OSPO++ @ CHAOSScon - Measuring OSS in Universities (Separate registration required)
13:30-17:30 Whole afternoon focused on Augur - see below
13:30-17:30 Whole afternoon focused on GrimoireLab - see below

GrimoireLab Workshop (13:30-17:30)

Time Topic
13:30-13:40 Welcome by Bitergia
13:40-14:00 GrimoireLab History
14:00-14:30 GrimoireLab Use Cases
14:30-15:15 Workshop 1: Notebooks for Data Cooking
15:15-15:30 Break
15:30-16:15 Workshop 2: Find Your Newcomers
16:15-16:30 Break
16:30-17:15 Workshop 3: Network Graphs for Fun & ...Insights
17:15-17:30 Closing remarks

GrimoireLab History

GrimoireLab is a set of tools to retrieve, organize, analyze, and visualize data coming from software development repositories. Many things have changed since the last time GrimoireLab was at CHAOSScon: new functionalities, a pair of successful Google Summer of Code projects, OpenSearch support. In this talk, we will introduce the new features and components of the platform and the brand new roadmap for the near future.

GrimoireLab Use Cases

Users of GrimoireLab share how they are using the tools. Speakers to be confirmed.

Workshop 1: Notebooks for Data Cooking

Showcase how to use GrimoireLab data using Notebooks - Free software like GrimoireLab and Python notebooks excel at allowing you to process the collected data in any way you want. Your imagination is the limit! In this workshop we’ll show you how to leverage Python notebooks to play with data collected by GrimoireLab. Comment your use case on Slack or the mailing list so we adapt the examples!

Workshop 2: Find Your Newcomers

Identify new members of the community - Metric of the Month - Welcoming, helping and encouraging your newcomers as they join your community are key practices for retention. Visualizations and metrics help you monitor how they are doing. And identifying them is the first step.

Workshop 3: Network Graphs for Fun & ...Insights

Network Analysis - Network graphs are eye candy and impressive. And GrimoireLab provides them. Learn how to use them for exploring your data and then tune them for getting your point across …or just for showing-off, why not? B-)

Augur Workshop (13:30-17:30)

Time Topic
13:30-13:40 Welcome by Sean Goggins
13:40-14:00 Augur and OSS-Aspen
14:00-14:30 OSS-Aspen: A dynamic new front end
14:30-15:45 Thread 1: Front End with OSS-Aspen
14:30-15:45 Thread 2: Augur Installation and Configuration
14:30-15:45 Thread 3: Ecosystem Networks: Communication and Contribution Across Projects
15:45-16:00 Break
16:00-16:30 Sharing Across Threads
16:30-17:30 Thread 1: Front End with OSS-Aspen
16:30-17:30 Thread 2: Augur Installation and Configuration
16:30-17:30 Thread 3: Ecosystem Networks: Communication and Contribution Across Projects
17:30 Closing remarks

Augur Threads

There are many parts of Augur to use, and Contribute to.

Thread 1: Front End with OSS-Aspen

Showcasing Wide, Deep Data with OSS-Aspen - OSS-Aspen is a new and compelling Dash/Plotly based interface for Augur that leverages Augur's rich and complete data! You will learn how to quickly visualize anything you can imagine across a prepared collection of over 20,000 repositories.

Thread 2: Augur Installation and Configuration

Installing and Configuring Augur - Learn how to get started quickly, and collect data for any repository you are interested in!

Thread 3: Ecosystem Networks: Communication and Contribution Across Projects

Network Analysis - No single project, or collection of projects exists in isolation. The technical strategies, communication and work are usually spread across numerous other projects, and project dependencies. Learn how to take an ecosystem level of view of CHAOSS Metrics and Metric Models.

Speakers and Session Descriptions

To be announced.


This is a community-organized event, and we rely on sponsors to cover costs for coffee and other refreshments. If you are interested in sponsoring, please have a look at our sponsor prospectus. Thank you to our past sponsors!

Gold Level Sponsors

Red Hat Logo and Text

Bronze Level Sponsors

Bitergia logo
Alfred P. Sloan Foundation Logo

CHAOSScon EU 2023 Organizing Committee

  • Armstrong Foundjem
  • Daniel Izquierdo
  • Dawn Foster
  • Elizabeth Barron
  • Georg Link
  • Katie Schueths
  • Matt Germonprez
  • Ruth Ikegah
  • Sean Goggins
  • Sophia Vargas
  • Vinod Ahuja