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Communication & Open Source

Open source communication tools alongside the foundations of the open source world: self-hosted email, team chat, voice, and forms, plus clear guides to what open source is, how its licenses work, and how to join and contribute to its communities.

Open Source Email Servers

Self-hosted mail with Mailcow, iRedMail, and Mailu.

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Open Source Team Chat

Slack alternatives like Mattermost, Rocket.Chat, and Zulip.

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Open Source VoIP & PBX

Phone systems built on Asterisk and FreePBX.

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Open Source Forms & Surveys

Form builders and survey tools like LimeSurvey and Formbricks.

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What Is Open Source Software

What open source is, how it works, and why it matters.

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Open Source Licenses

MIT, GPL, Apache, and how license compatibility works.

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Open Source Alternatives

Open source replacements for popular proprietary software.

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Linux Distributions

Choosing a distro for desktop, server, or gaming.

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Open Source Communities

How open source communities and foundations work.

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Contributing to Open Source

Find projects and make your first pull request.

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