-Thanks for using our software. Please do great things with it and tell
-the world about it. Tell us, too, because we love to have positive
-feedback.
+You can also ask your questions, or simply discuss with other users on
+to the [SimGrid mattermost](https://framateam.org/simgrid/channels/town-square)
+or on the #simgrid IRC channel of the oftc network.
+
+Last, the main development of SimGrid is done on [Framagit](https://framagit.org/simgrid/simgrid/),
+but we also maintain a [GitHub mirror](https://github.com/simgrid/simgrid/) and an [Inria GitLab mirror](https://gitlab.inria.fr/simgrid/simgrid),
+
+Thanks for using our software. Please do great things with it and tell the world about it.
+Tell us, too, because we love to have positive feedback. Welcome to our community.