Default to Open: Migration plan for the OpenScienceMOOC

This document will serve to help us planning the migration to a more open workflow.

See issue related to that topic

Please insert your alternative by respecting the alphabetical order in the "Alternative To" column

Some applications like Twitter and Facebook could also be use in parallel of an open source alternative. That way, We give an option to people who wants to only use FOSS but we still have a way to communicate with the rest of the world. We could also consider to promote alternative on our proprietary platform account ;).

List of Alternatives

Application name	Alternative To	License [1]	Website
Diaspora	Facebook	AGPL-3.0-or-later	https://diasporafoundation.org/
GitLab	GitHub	MIT	https://gitlab.com/
Collabora CODE	Google Docs	MPL-2.0 and GPL-3.0-or-later	https://www.collaboraoffice.com
OnlyOffice	Google Docs	AGPL-3.0-only	https://onlyoffice.org
NextCloud	Google Drive	AGPL-3.0-only	https://nextcloud.com
Gitter	Slack	MIT	https://gitter.im
Mattermost	Slack	MIT, Apache-2.0 or AGPL-3.0-only	https://mattermost.com/
Matrix (Synapse)	Slack	Apache-2.0	https://matrix.org [2]
Zulip	Slack	Apache-2.0	https://zulipchat.com
Mailman	Tiny Letter	GPL-2.0-or-later	https://list.org/
Mailtrain	Tiny Letter	GPL-3.0-or-later	https://mailtrain.org/
Sympa	Tiny Letter	GPL-2.0-or-later	https://www.sympa.org/
Mastodon	Twitter	AGPL-3.0-or-later	https://mastodon.social [3]

Notes

1: https://spdx.org/licenses/ - Use SPDX license codes instead of license names

2: https://matrix.org/docs/projects/try-matrix-now.html - Here's a list of clients suggested by the Matrix team.

3: This is the official instance but you can use an other one if you like. Mastodon is a decentralized platform. That mean every instance can communicate with each other but aren't necessarily managed by the same person.