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MQTT broker for IoT messaging inside the building network

Review status: Research backlog. Research candidate with incomplete checks; not a vetted recommendation.

Official Website · Source Code

oss-osi-approved stub guide

Overview

Mosquitto is a lightweight MQTT broker. It underpins many sensor and access prototypes in flexible workspaces when segmented properly on the network.

At a glance

FieldValue
Categoriesiot-sensors, network-wifi
Deploymentself-hosted
License classoss-osi-approved (EPL-2.0)
Cost modelfree-self-hosted
Implementation difficultymoderate
Maintenance burdenmedium
Maturitystable
Freshness statuspartially-verified (2026-07-17)
Completenesspartial
Confidencelow
Directory tierresearch-backlog

Cost reality

Free software; network design and ACLs matter more than license cost.

Pricing and free-tier limits change frequently; re-check official pricing before budget decisions.

Tasks reduced or augmented

Software does not replace community or ops staff. It may reduce or augment:

  • IoT message transport
  • Decoupling sensors from apps

Human oversight still needed

  • Authentication/ACL
  • TLS on untrusted networks

Manual process this can replace

Structured task-fit review has not been completed for this tool. Treat the free-text examples above as evaluation prompts, not replacement claims.

Data held

  • MQTT topics/payloads

  • connection logs

  • Personal data: no / limited

  • Payment data: no / not primary

Risks

AreaNotes
Vendor lock-inEvaluate export formats and API completeness before deep customization.
SecurityApply updates promptly; restrict admin access; enable TLS.
ComplianceOperator remains responsible for privacy and local regulatory obligations.
LicensingConfirm license fits commercial coworking use.
OperationalPlan backups, monitoring, and a restore drill before production use.

Coworking fit

Roles: technical-operator, facilities

Workflows: facility-maintenance, access-provisioning

Problems: integrate-stack, self-host-for-data-control

Smallest useful experiment

Run Mosquitto on a VLAN-isolated host and publish/subscribe temperature readings from one sensor.

Initial planning estimate (unverified): 1–3 days

Implementation guide

See the human-written implementation guide.

Verification

Seed entry compiled from official project sites and repositories. Re-verify pricing, license text, and feature claims before production decisions. Star counts and free-tier numeric limits intentionally omitted unless verified at review time.