colegota/gnu-social: GNU social is a social communication software used in federated social networks. It is widely supported and has a large userbase. It is already used by the Free Software Foundation.

Diogo Cordeiro b730582336 [CORE] Add GNUSOCIAL_ENGINE_REPO_URL and increase usage of GNUSOCIAL_ENGINE_URL		5 years ago
..
Activity	b730582336 [CORE] Add GNUSOCIAL_ENGINE_REPO_URL and increase usage of GNUSOCIAL_ENGINE_URL	5 years ago
ActivityModeration	01f6d83b86 [MODULES] Fix VERSION constant to MODULE_VERSION in various modules	5 years ago
ActivityVerb	01f6d83b86 [MODULES] Fix VERSION constant to MODULE_VERSION in various modules	5 years ago
ActivityVerbPost	b730582336 [CORE] Add GNUSOCIAL_ENGINE_REPO_URL and increase usage of GNUSOCIAL_ENGINE_URL	5 years ago
AuthCrypt	b730582336 [CORE] Add GNUSOCIAL_ENGINE_REPO_URL and increase usage of GNUSOCIAL_ENGINE_URL	5 years ago
Favorite	b730582336 [CORE] Add GNUSOCIAL_ENGINE_REPO_URL and increase usage of GNUSOCIAL_ENGINE_URL	5 years ago
HTMLPurifierSchemes	b730582336 [CORE] Add GNUSOCIAL_ENGINE_REPO_URL and increase usage of GNUSOCIAL_ENGINE_URL	5 years ago
Share	b730582336 [CORE] Add GNUSOCIAL_ENGINE_REPO_URL and increase usage of GNUSOCIAL_ENGINE_URL	5 years ago
TheFreeNetwork	e0b17fc97d [REALTIME] Reviewed both the superclass and its dist plugins	5 years ago
README.md	8c0601816f [CORE] Move core plugins to a new modules directory	5 years ago

GNU social modules are like plugins but cannot be disabled. Having "mandatory plugins" allows to aggregate together, more logically, some of the core functionality, which makes it easier to find where a particular component was defined.

README.md