snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

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+[Mixxx](https://mixxx.org/) is open-source DJing software built by a community
+of passionate DJs and programmers from all over the world. In their nights and
+weekends, and without centralized planning or deadlines, they’ve created free
+software that [rivals](https://cdm.link/mixxx-2-4-2/) commercial alternatives
+*and* [respects](https://www.digitaldjtips.com/reviews/mixxx-2-5-1-dj-software/)
+its users.
+
+Mixxx aims to offer DJs creative freedom that can’t be found in other software.
+In the Mixxx community, collaboration between users and developers drives
+product innovation. A simple question from a user can spark a clever solution.
+
+“Zulip has become a solid foundation of our community: a place where developers,
+translators, designers, and testers meet and collaborate,” core Mixxx developer
+Daniel Schürmann explains in a [blog
+post](https://mixxx.org/news/2025-11-17-zulip-3000_members/) occasioned by the
+Mixxx Zulip community reaching 3,000 members.
+
+<figure class="markdown-image-with-caption">
+  <img src="/static/images/landing-page/case-studies/Mixxx-UI.png" alt="Mixxx software interface">
+  <figcaption class="markdown-image-caption">Mixxx software</figcaption>
+</figure>
+
+## Needed: A platform to keep conversations organized and accessible
+
+Founded in 2001, the Mixxx community originally communicated on a Mailman
+mailing list and an IRC chat channel. But by 2018, these platforms were no
+longer serving the community’s needs.
+
+"As the project and number of contributors grew, we needed a platform that could
+keep conversations organized and accessible to everyone,” Daniel explains on the
+Mixxx blog. “Zulip… convinced us after a short evaluation period. Its unique
+thread system was the ideal solution to replace structured email threads and
+instant chat rooms.”
+
+> [Zulip’s] unique thread system was the ideal solution to replace structured
+> email threads and instant chat rooms.
+>
+>  — [Mixxx blog](https://mixxx.org/news/2025-11-17-zulip-3000_members/)
+
+## Supporting asynchronous collaboration with structure and focus
+
+Zulip has proven perfectly suited to support Mixxx’s worldwide community: It has
+made collaboration easier, and community engagement has grown as a result.
+“Zulip works particularly well for open-source projects where many topics run in
+parallel, and where structure and focus are key to success,” Daniel explains.
+
+Being able to move messages between threads helps keep conversations tidy, which
+is critical for a distributed volunteer community like Mixxx: “[It] makes it
+possible to collaborate asynchronously across time zones without missing
+important context,” Daniel’s writes on the blog.
+
+> Whenever a topic drifts, we can split it into a new thread, so conversations
+> stay focused and are easy to follow.
+>
+>  — [Mixxx blog](https://mixxx.org/news/2025-11-17-zulip-3000_members/)
+
+The Mixxx community has dedicated channels for development, support,
+socializing, and introductions. New members are encouraged to introduce
+themselves in a dedicated topic with their name, where the community can welcome
+them.
+
+## Informed, but not stressed
+
+Daniel, too, contributes to Mixxx in his spare time. Given the demands of his
+day job, family and friends, “I’m not the person who can always hang around in
+the chat,” he explains. “With Zulip, there’s no *need* to hang around in chat
+rooms to avoid missing an important conversation.”
+
+> With Zulip, I feel informed, but not stressed by all the messages.
+>
+>  — Daniel Schürmann, core Mixxx developer
+
+Zulip’s threading model also works well for occasional participants in the
+community, and world-public channels make it possible to view discussions
+without even creating an account.
+
+Daniel squeezes in some Mixxx time on his commute: “The smart phone app recently
+received a major update, and is very nice,” he says.
+
+## Creative collaboration between users and developers
+
+A creative partnership between users and developers is core to the Mixxx
+development process. Zulip supports detailed, specific discussion of any problem
+reported by a user, with video and image uploads, syntax-highlighted code
+blocks, and convenient quoting functionality. Everyone can keep track of
+conversations in their [inbox](/help/inbox), and automatically
+[follow](/help/follow-a-topic) topics they’ve participated in.
+
+> Collaboration in the Mixxx Zulip community propels the creative process to
+> the next level.
+>
+> — Evelynne Veys, core Mixxx developer
+
+## One of the best tools, built with love
+
+Daniel uses Microsoft Teams in his day job, and greatly prefers Zulip: “You can
+experience that there’s a lot of love in Zulip,” he explains. From the smooth,
+snappy interactions, to helpful touches like global times, polls, and pronouns,
+it adds up.
+
+> You can experience that there’s a lot of love in Zulip.
+>
+> — Daniel Schürmann, core Mixxx developer
+
+Other community members feel it too: “Some new contributors who were skeptical
+at first later told us that they consider Zulip one of the best tools for
+managing communication across projects,” Daniel says.
+
+With Zulip, the Mixxx community isn’t reliant on proprietary software built by a
+mega-corporation. Daniel and other community members are glad that the Mixxx
+community has found an excellent communication tool that also aligns with their
+FOSS values.
+
+> I highly recommend Zulip to other communities… Slack is a no-go for many due
+> to not being FLOSS, and I’m concerned about vendor lock-in if they were to
+> stop being so generous. Slack’s threading model is much worse than Zulip’s
+> IMO. The channels/topics flow is an incredibly intuitive way to keep track of
+> everything that is going on.
+>
+> — RJ Ryan, core Mixxx developer
+
+---
+
+Check out our guide on using Zulip for [open source](/for/open-source/), and
+learn how Zulip [helps communities scale](/for/communities/)!