The best open source alternative to Device42 is NetBox. If that doesn't suit you, our users have ranked more than 25 alternatives to Device42 and ten of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Device42 are Ralph, RackTables, ITDB and OpenMAINT.
NetBox is an open source web application designed to help manage and document computer networks. Initially conceived by an engineering team at DigitalOcean, it was developed specifically to address the needs of network and infrastructure engineers.
Lightweight Assets Management System for Data Center and Back Office. It is an Open Source project provided on Apache v2.0 License.
Racktables is a nifty and robust solution for datacenter and server room asset management. It helps document hardware assets, network addresses, space in racks, networks configuration and much much more!
Open source solution for the Property & Facility Management; an application for the management of buildings, installations, movable assets and related maintaining activities.
a free, web based Data Center Infrastructure Management application.
Provide complete physical inventory (asset tracking) of the data center
Support for Multiple Rooms (Data Centers)
Management of the three key elements of capacity management - space, power, and cooling
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RackMonkey is a tool for managing racks of equipment such as servers and switches. You can keep track of what's where, which OS it runs, who it belongs and what it's used for. RackMonkey quickly finds any device and draws a rack diagram of its location.
RackSmith is designed to provide an easy to use web interface to manage equipment and connections within a data center. It aims to allow quickly recording and maintenance of connections between devices throughout your network & to assist in day to day management tasks.
Nautobot is a Network Source of Truth and Network Automation Platform built as a web application atop the Django Python framework with a PostgreSQL or MySQL database.
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Datacenter and Facility Management have not much in common.