Homelab Atlas simplifies self-hosted network documentation with auto-layout diagrams

On October 30, 2026, the publication Noted reviewed Homelab Atlas, a new self-hosted application designed to help home lab enthusiasts document their infrastructure. The tool automates the creation of visual network diagrams, allowing users to map out machines and services without manual layout adjustments.

What happened

Homelab Atlas addresses a common pain point for self-hosters: keeping track of an evolving infrastructure. As users add containers, move services between hosts, or accumulate multiple mini PCs, mental maps of the setup become unreliable. This tool provides a dedicated interface where users can define their hardware and software components, then lets the application handle the spatial arrangement of the diagram.

The review highlights that the tool is not intended to replace monitoring dashboards. It does not provide real-time status updates or alert when a service goes offline. Instead, it serves as a static documentation layer, offering a clear snapshot of how different parts of the homelab connect and interact. This distinction is important for users who might expect live telemetry from a visualization tool.

To reduce manual data entry, Homelab Atlas includes discovery features. It can scan for Docker containers using an optional collector and identify network devices via Nmap. Users can also import results from previous network scans. Crucially, the tool requires human review before adding discovered items to the diagram, preventing clutter from unnamed or irrelevant devices on the local network.

Key details

• Automated layout: The application arranges machine cards and service icons automatically, saving time compared to traditional diagram editors.
• Visual recognition: It uses recognizable logos for popular self-hosted applications, making diagrams easier to read at a glance.
• Discovery tools: Supports Docker container discovery and Nmap-based network device identification, with an option to import existing scan results.
• Deployment: Available as a Docker Compose setup with images for both AMD64 and ARM64 architectures, requiring no external database.
• Storage limitation: Project data is stored in the browser rather than on the server volume, requiring manual JSON exports for backup.
• Security note: The application lacks built-in authentication, so it should remain accessible only within the local network.

Background

Network diagrams are standard practice in enterprise IT for documenting topology, but they are often neglected in home labs due to the effort required to maintain them. Traditional tools like Visio or draw.io require users to manually place every node and draw every connection line. For a dynamic environment where containers spin up and down frequently, this manual process becomes a burden.

Self-hosting has grown in popularity among developers and privacy-conscious users who run their own email servers, media centers, and development environments. As these setups grow from a single Raspberry Pi to a cluster of servers, the complexity increases. Documentation tools that integrate with the local environment, rather than requiring purely manual input, help bridge the gap between operational reality and architectural understanding.

Why it matters

For teams or individuals managing self-hosted software, accurate documentation is critical for troubleshooting and onboarding. When a service fails, knowing exactly which physical host or virtual machine runs it can significantly reduce resolution time. Homelab Atlas provides a low-friction way to maintain this knowledge base. By automating the visual layout, it lowers the barrier to keeping diagrams up to date, encouraging users to document changes as they happen.

The separation of documentation from monitoring is also a valuable design choice. Monitoring tools generate noise and alerts, while documentation provides context. Mixing the two can lead to cluttered interfaces that are hard to interpret during an incident. A clean, static diagram allows engineers to understand the structural relationships between services without being distracted by fluctuating metrics or alert states.

However, the storage mechanism presents a risk for long-term use. Since the project state lives in the browser cache, clearing cookies or switching devices could result in data loss. Users must adopt a disciplined workflow of exporting their work regularly. Additionally, the lack of authentication means that anyone with access to the local network can view the infrastructure map, which may be a concern for those sharing their network with untrusted devices.

What you can do

• Deploy Homelab Atlas using the provided Docker Compose file on an AMD64 or ARM64 host within your local network.
• Use the Docker collector or Nmap integration to populate your initial diagram, but review all discovered items before accepting them.
• Export your project as a JSON file immediately after creating or updating your diagram to ensure you have a backup.
• Generate PNG or SVG exports of your final diagrams to include in external documentation or share with team members.
• Restrict access to the Homelab Atlas instance using firewall rules or network segmentation, as it has no login system.
• Keep the tool updated by pulling the latest container images, though verify compatibility with your existing Docker setup.

The closing section appears below.