Self-Hosted Apps Built with C

5 self-hostable apps built with C you can run on your own server — compared on specs, deployment difficulty, and the SaaS each one replaces.

Home automation

Eclipse Mosquitto

A lightweight MQTT message broker from the Eclipse Foundation: the publish/subscribe hub that smart-home devices, Zigbee bridges and sensors talk through. A small C program with TLS, authentication and persistence, published as an official Docker image.

C

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Observability

Netdata

Real-time, per-second monitoring of systems, containers, and applications with zero-configuration auto-detection and a lightweight C agent.

C

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Network-wide ad blocking

Pi-hole

A DNS sinkhole that blocks ads and trackers for every device on your network — no client software needed. Runs on almost nothing and gives you a tidy dashboard of what your network is really talking to.

C (pihole-FTL)

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File sync & storage

Seafile

File sync and share built around libraries: each one syncs separately with delta transfers and resumable uploads, and any library can be encrypted on the desktop client with a password the server never stores. The Community Edition server core is AGPL-3.0 with an Apache-2.0 web UI; the Professional Edition adds full-text search, file locking, audit logs and S3 storage, and is free for up to three users.

CGoPython

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Monitoring

Zabbix

Enterprise-grade infrastructure monitoring covering agents, SNMP, IPMI, JMX and agentless checks, with templates, network auto-discovery, escalation-aware alerting and long-term trend storage. It is a server, a database, a PHP frontend and agents — not a single container you start and forget.

CPHPMySQL

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