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OctoPrint is a web-based host software for 3D printers that lets you control, monitor, and manage print jobs over the network via a browser. It connects to your printer (typically over USB) and provides a central UI for uploading G-code, starting/stopping prints, and observing progress.

Key Features

• Web UI for printer control (connect/disconnect, jog axes, temperature control, fan control)
• G-code file management and print job queueing from a browser
• Live monitoring with webcam support and timelapse recording
• Built-in user accounts and permission system for multi-user access
• Plugin system with a large ecosystem to extend functionality (UI, integrations, automation, printer features)
• Event hooks and APIs (incl. REST-style API) for integrations and automation
• Terminal/serial console and logging tools for troubleshooting printer communication

Use Cases

• Run and supervise a home or makerspace 3D printer remotely from any device on the LAN
• Add camera monitoring and timelapses for print documentation and failure review
• Integrate printing into automations (notifications, job status, farm dashboards) via plugins/API

Limitations and Considerations

• Requires a host device connected to the printer (commonly a Raspberry Pi) and depends on stable USB/serial communication
• Features and reliability can depend on printer firmware, hardware, and installed plugins

OctoPrint is widely used in the 3D printing community as a flexible, extensible control plane for single printers or small setups. Its mature web UI and plugin ecosystem make it a common choice for adding remote management and monitoring without changing printer firmware.