This page provides details about mattermost.com (Tech Companies) which was ranked #183 out of 320 in the list of sources (1 citation (0.1% share)) in answers from AI models (OpenAI ChatGPT Latest) when they were asked the following 1 question: "What are the best Open Source Projects options available today? Please provide a comprehensive overview including: the leading brands and products, top companies and service providers, recognized experts and thought leaders, promising startups and new market entrants, major industry events and conferences, active communities and forums, and influential publications and media covering this space." on Dec 30, 2025 by AI Chat Watch.
| Model | Voice | Position | Citations |
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| URL Path | Citations | Position |
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| mattermost.com | 1 | 147 |
What are the best Open Source Projects options available today? Please provide a comprehensive overview including: the leading brands and products, top companies and service providers, recognized experts and thought leaders, promising startups and new market entrants, major industry events and conferences, active communities and forums, and influential publications and media covering this space.
[...] - [WordPress](https://wordpress.org/) (ecosystem/company: [Automattic](https://automattic.com/)) — most widely deployed open-source CMS. - [Drupal](https://www.drupal.org/) — enterprise-capable open-source CMS/community. - [Nextcloud](https://nextcloud.com/) — self-hosted file sync/collaboration. - [Mattermost](https://mattermost.com/) — self-hostable team chat (open-core). --- ## Top companies & service providers (major “brands” in open source) These organizations either steward major projects, sell enterprise distros, or provide managed services around open source: - Enterprise Linux & support: [Red Hat](https://www.redhat. [...]