Cloudron is an open-source self-hosted PaaS built on Docker and developed by Cloudron UG in Germany, with one-click app installs and auto-updates, a built-in mail server and SSO; the free plan supports 2 apps and Pro costs €15/month, ideal for individuals and teams that value data ownership.

Strengths and Features

✅ Open-source self-hosted PaaS built on Docker (founded in 2014), with one-click install and auto-update from the App Store, no manual Dockerfiles needed
✅ App and system security patches are pushed within 24 hours, with regular app updates released within days, far cheaper to maintain than manual ops
✅ Built-in mail server with automatic DKIM, SPF, and DMARC setup (3 items) plus spam filtering, an out-of-the-box email solution
✅ Centralized user management and Single Sign-On (SSO), with 1 account system governing users and per-app access
✅ Encrypted backups to 3+ external storages including Amazon S3, Google Cloud Storage, and DigitalOcean Spaces
✅ Free plan supports 2 apps; Pro at €15/month and Max at €25/month unlock unlimited apps
⚠️ Apps are packaged by the official team, limiting customization compared with hand-written Docker Compose configurations
⚠️ The free plan allows only 2 apps; running more requires a subscription (from €15/month), a budget hurdle for fully free users
⚠️ App Store coverage is limited; niche or custom apps may be missing and need community apps or self-built containers
⚠️ Built on the Node.js/Docker stack, traditional ops teams must learn container and platform concepts, adding onboarding cost
⚠️ Self-hosted by design with no managed cloud service, so server, system, and security updates are your responsibility

Product Information

Category Cloud Server

Tags Node.js SSO One-click Install Self-hosting App Store Backup Restore Open-Source PaaS Cloudron Auto Update Built-in Mail Server Self-hosted App Platform Docker App Deployment

Company cloudron

Service Region Germany

Official Website https://www.cloudron.io/

Recommendation Score 4 pts

Published 2026-08-09

Detailed Notes

Overview

Cloudron is an open-source self-hosted PaaS platform developed by Cloudron UG, a German company registered in Bavaria, founded in 2014. Built on Node.js and Docker, it consolidates installing, updating, and maintaining apps on your own cloud server into a single web interface: one-click installs from the App Store, automatic updates, a built-in mail server, and Single Sign-On (SSO).

Cloudron's core idea is "manage self-hosted apps like phone apps": the official claim is that app and system security patches are pushed within 24 hours, with regular updates within days, and immutable-infrastructure design lets apps migrate easily between servers. It targets individual developers, small teams, and organizations that value data ownership and want to avoid hand-maintaining Docker Compose files and mail servers.

Key Strengths

One-click installs and auto-updates: the App Store installs and updates apps automatically, with security patches pushed within 24 hours, avoiding missed manual upgrades. See container security best practices.
Enterprise-grade mail out of the box: automatic DKIM, SPF, and DMARC (3 items) plus spam filtering dramatically lower the difficulty of self-hosting email.
Unified user management with SSO: 1 account system governs users and per-app access, with one login reaching all apps and simpler permission management.
Encrypted external backups: backups can be encrypted to 3+ external storages such as Amazon S3, Google Cloud Storage, and DigitalOcean Spaces, more reliable with the cloud server backup strategy.
100% portable: immutable-infrastructure design lets you migrate apps and the entire server to another cloud provider, reducing vendor lock-in.

Product Ecosystem

App Store

Hundreds of commonly used apps with one-click install and continuous updates across collaboration, blogging, databases, monitoring, and email, with updates and security patches packaged by the official team.

Mail Server

A modern built-in mail solution with calendars, contact sharing, and a self-training spam filter, with DKIM, SPF, and DMARC configured automatically for reliable delivery.

User Management and SSO

A centralized user directory and SSO login, with per-app access control — an out-of-the-box unified account system for organizations.

Backup and Restore

Per-app backup and restore with encrypted backups saved to external object storage for stronger disaster recovery.

Limitations

Limited customization: apps are packaged by the official team, so fully custom configurations possible with hand-written Docker Compose may be restricted.
Free plan app cap: only 2 apps on the free plan; more apps require a subscription (Pro €15/month, Max €25/month).
Limited App Store coverage: far fewer apps than general ecosystems, so niche or custom apps may need community apps or self-built containers.
Technical learning curve: built on the Node.js/Docker stack, traditional ops teams must first understand containers and platform concepts.
Infrastructure is on you: no managed cloud service is offered, so server security, system updates, and high availability are your responsibility.

Use Cases

Self-hosting enthusiasts and solo developers (★★★★★): one-click installs and auto-updates let you focus on the app, not the ops.
Teams deploying many apps quickly (★★★★★): batch installs and central management from the App Store beat manual deployment.
Organizations that value data ownership (★★★★): self-hosting plus encrypted external backups and auditable open source.
Self-hosted email needs (★★★★): built-in DKIM/SPF/DMARC configuration is far simpler than a hand-built mail stack.
Fully custom deployments (★★): customization is limited; prefer bare Docker Compose or Kubernetes. See VPS vs dedicated comparison when selecting.

Pricing

Plan	Monthly	Notes
Free	€0	2 apps
Pro	€15	unlimited apps, includes updates, backups, firewall, mail, and SSO
Max	€25	unlimited apps, plus user groups/roles, directory server, and multiple backup sites

Note: prices exclude VAT and the cost of the VPS or cloud server you buy; for cost assessment see server cost calculator.

FAQ

Is Cloudron free? The free plan supports 2 apps; unlimited apps require Pro (€15/month) or Max (€25/month). The software is open source and self-installable for evaluation, and server costs can be estimated with the server cost calculator.
How does Cloudron compare with building your own with Docker Compose? Choose Cloudron for fast deployment, auto-updates, and out-of-the-box mail/SSO; choose bare Docker Compose for fully custom orchestration. For basics see container security best practices.
Which apps can Cloudron deploy? Apps in the App Store — collaboration, blogging, databases, monitoring, and email — install in one click, and website apps such as WordPress are available too; see WordPress hosting market.
What is Cloudron's backup approach? Per-app backup and restore with optional encrypted backups to S3, GCS, and other external storage; combine with the website backup strategy for a regular schedule.
How much server does Cloudron need? It depends on the number and type of apps; generally 1–2 cores and 2–4GB RAM run several lightweight apps. For sizing, see the cloud server configuration guide.

Visit Cloudron Website →