BuddyPress vs Elgg

BuddyPress is a free, open-source WordPress plugin that adds social networking features to websites. It supports campus networks, company communication tools, niche communities, and product-focused networks. Administrators can disable unneeded features, with the theme adjusting menus, pages, and buttons to match. Extended Profiles provides configurable fields, field groups, avatars, account settings, and visibility choices such as Everyone, Only Me, All Members, and My Friends. Activity streams combine site, member, and group activity with updates, comments, favorites, mentions, and RSS feeds. Members can create public, private, or hidden groups, while group administrators manage membership and invitations. Private messages work between people on a member’s friends list, with inbox and sent folders. Notifications cover activity, messages, friendships, and groups. WordPress.org plugins extend the system, and the BP REST API exposes community data and authenticated actions through JSON endpoints. BuddyPress requires WordPress, PHP 5.2.4 or later, MySQL 5.0 or later, and Apache mod_rewrite.

Elgg is a free, open-source framework for building web applications where people sign in and share information. It can serve as a foundation for campus networks, organizational collaboration platforms, or company communications tools. Hooks and events let plugins extend or change application behavior, while the view system supports custom themes. Granular content access policies can support private networks and intranets; user groups and a file storage API provide building blocks for managing members and their files. Elgg supports on-site and email notifications, as well as RPC web services for external applications and mobile clients. Its listed security features include anti-CSRF validation, XSS filters, HMAC signatures, and password hashing. The project offers documentation, tutorials, an API reference, community discussions, and a repository with more than 1,000 open-source plugins. It is free to download, install, and use. The full package with core plugins is offered under GPLv2; the framework without plugins is offered under MIT. Self-hosting requires a database and a configured cron job for background tasks.