Nextcloud
Comparisons anchored on Nextcloud, the AGPL file sync and collaboration platform, against other self-hosted file platforms.

Comparisons of self-hosted file sync, online office, video meeting and email suites, judged on license and paid editions, architecture, hosting footprint and the cost of moving users between them.
Comparisons anchored on Nextcloud, the AGPL file sync and collaboration platform, against other self-hosted file platforms.
Comparisons anchored on Collabora Online, the LibreOffice-based online office suite under MPL-2.0.
Comparisons anchored on Jitsi Meet, the Apache-2.0 video conferencing stack.
Comparisons anchored on Mattermost, the open-core team chat platform, against other self-hosted Slack replacements.
Comparisons anchored on Open-Xchange OX App Suite, the email and groupware suite built for service providers.
Comparisons anchored on Matrix, the open federated messaging protocol, and Synapse, its AGPL-3.0 homeserver developed by Element, covering how Matrix deployments are built and scaled.
Comparisons anchored on BigBlueButton, the LGPL-3.0 virtual classroom and web conferencing system, covering single-server and load-balanced deployments.
Comparisons that start from Rocket.Chat, the self-hosted team chat platform with an MIT core and separately licensed enterprise code, against other open-source chat options.
Comparisons anchored on openDesk, the Kubernetes-based sovereign workplace suite from ZenDiS that bundles Nextcloud, OX App Suite, Element, XWiki, OpenProject, Jitsi and Collabora for public administration.
Comparisons that start from ownCloud against other self-hosted file sync and share platforms other than Nextcloud, which is compared from the Nextcloud hub.
Roundups of self-hosted collaboration software: file sync and share, team chat and full collaboration suites, judged on license and paid editions, architecture and the cost of moving users.
Comparisons anchored on ONLYOFFICE Docs and DocSpace, the AGPL online office editors with paid Enterprise and Developer editions.
Comparisons anchored on Zulip, the Apache-2.0 team chat with topic-based threading, covering Zulip Cloud, self-hosted plans and Matrix.
Comparisons anchored on Zimbra Collaboration against the self-hosted email suites its users move to after the 10.x licensing changes.
Comparisons of self-hosted mail server stacks, from dockerized suites such as mailcow and Mailu to Stalwart and Mail-in-a-Box, judged on components, licensing and operating effort.

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