We use LetsEncrypt to auto-generate SSL Certificates to serve our website with https.

We use Buffer to plan our important tweets like reminders for call for speakers, registration, etc.

We use Google Sheets to store the call for speakers proposals received from Google Forms.

Then we use Spreadsheets API to populate a Single Page App for reviewing proposal, vote and sort.

We use Gorgias ticketing system as a front inbox to handle emails within the team.

We use Jekyll to build our website. We created a collection for talks. We handle speakers and sponsors via data files.

We use Ruby on our server in order to run Jekyll.

We use JavaScript for rendering the content of a Google Spreadsheet in a Single Page Application.

We use Disqus to power comments on our static blog.

We use GitHub Pages with Jekyll for many websites.

We use Markdown to write posts for our blog, and also document our processes.

We use Travis CI to test and automatically deploy our static website on our server.

We use Mailchimp to keep our attendees and speakers informed.

We use Atom and a bunch of userful plugins to handle the code of our websites and apps.

We use Drive to store brand assets, invoices, billing and other useful documents.

We use Trello to share vision on what's important to tackle next. We have different boards : general, speakers, sponsors.

We use Slack for day to day exchanges, confcalls and notification center from external services.

We use GitHub to store our websites code source, brand assets and our Manifest.

We version all our static websites, our brand assets and apps with Git.

We use Analytics to have insights on the UX on our website.

Our websites run on Apache. We use the proxy reverse feature to serve directly static websites hosted on GitHub on our domain.