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SPECIFICTION
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Fluxer vs Zulip

Fluxer

fluxer.app

Zulip

zulip.com

Side by side

FigureFluxerZulip
Price from$4.17/mo$3.50/mo
Free planYesYes
Free trial——
Open source—Yes
WebYesYes
WindowsYesYes
macOSYesYes
LinuxYesYes
iOSYesYes
AndroidYesYes
API—Yes
Self-hostedYesYes
Plans published37
Spec score · Team chat apps8.4 (#25)9.4 (#3)
ChannelsYesChannels define the audience for conversations and can be public or private.
EncryptionFluxer says push notifications relayed for self-hosted instances are encrypted before reaching its relay, which it says cannot read them.Clients use TLS over HTTPS, Cloud data is encrypted in transit and at rest, and mobile push content uses end-to-end encryption that hides message metadata from push providers.
Free planYesYes
IntegrationsThe 2026 roadmap says bot integrations are planned to support slash commands, modals, buttons, components, and interactions.Zulip lists more than 130 native integrations and hundreds more through Zapier and IFTTT.
PlatformsFluxer is available in web browsers and on Windows, Linux, and macOS, with iOS and Android apps in public beta.web,Windows,macOS,Linux,iOS,Android,API
Self-hostingThe AGPLv3 software can be self-hosted without a license key or reduced edition, and operators control their instance data and rules.Self-hosting is supported with installer scripts, Docker and prebuilt DigitalOcean or Render images, but administrators handle setup, upgrades and maintenance.

Plans

Fluxer

  • FreeFree
  • Plutonium$4.99 a month
  • Plutonium$49.99 a year

Fluxer pricing →

Zulip

  • Cloud FreeFree
  • Cloud Standard$6.67 a month
  • Cloud Plus$10 a month
  • Self-hosted FreeFree
  • Self-hosted Basic$3.50 a month
  • Self-hosted Business$6.67 a month
  • Self-hosted EnterprisePriced on request

Zulip pricing →

In their own words

Fluxer

Fluxer has no write-up on Specifiction yet; its figures are above.

Visit fluxer.app

Zulip

Zulip is team chat software that organizes conversations in channels and supports guest access. It runs on the web, Windows, macOS, Linux, iOS, and Android, and also supports an API. Listed integrations include GitHub, GitLab, Jira, Slack, Microsoft Teams, Google Calendar, Zoom, Jitsi Meet, Zapier, IFTTT, Sentry, and Zendesk. Zulip offers cloud and self-hosted plans. Cloud Free costs nothing and includes 10,000 messages of search history and 5 GB total file storage. Cloud Standard is $6.67 a month, billed annually, with 5 GB file storage per user. Self-hosted Basic is $3.50 a month, billed monthly. Other options include Cloud Plus, Self-hosted Free, Self-hosted Business, and Self-hosted Enterprise. Cloud Plus and Self-hosted Business have minimum user counts of 10 and 25, respectively. Zulip was founded in 2012 and is headquartered in San Francisco, California, United States.

Visit zulip.com