Rack Management Software in 2026: What to Track and Which Tool to Choose

Rack management software records what sits in every rack unit – the device, its owner, its power draw and its cables – and draws it as a rack elevation, so you can plan space and power without walking the floor. Pick it by the job: NetBox if you want a free source of truth, Sunbird or Hyperview if power and facilities matter most, and a DCIM joined to billing if you sell racks, servers and IP addresses to customers.

How this was sourced. FluxBilling publishes this guide and sells billing software for hosting providers with rack management built in, so it competes with some of the tools below. Every third-party version and price was read from the vendor’s own site or repository on 20 October 2026, in the currency the vendor publishes; no exchange rate is applied. Where a vendor publishes no price, we say so.

Part of the FluxBilling guide to DCIM software for hosting providers.

What is rack management software?

It is the part of data centre infrastructure management (DCIM) that deals with the rack itself. At minimum it holds every rack with its height in rack units (U), every device with its position and size, and a drawing of the front of the rack, called a rack elevation. Better tools add the rear face, zero-U power strips on the side rails, half-depth devices, cable connections between ports, the power circuit feeding each rack and who owns each device.

The question it answers is simple and expensive to get wrong: where is it, what is it plugged into, and is there room for one more?

When do Excel and Visio stop working?

A spreadsheet plus a Visio drawing is how most server rooms start, and for one rack it is fine. These are the signs you have outgrown it:

• The two copies disagree. The sheet says U20 is free, the drawing shows a 2U server there, and only a walk to the rack settles it.
• Nobody knows the power headroom. Space is easy to see; amps per circuit are not, and a full rack of low-power servers can trip a breaker before it runs out of U.
• Cables live in someone’s head. “Which switch port is this server on?” gets answered with a torch.
• There is more than one site. Every location grows its own file, naming drifts, and a site-wide search becomes impossible.
• There is no history. A spreadsheet tells you what someone typed last, not who moved the server or when.
• You bill for it. If customers pay for rack space, power or servers, a row in a sheet is not linked to an invoice, so a cancelled customer’s server can stay powered for months.

Two of these at once is usually the point where a tool pays for itself in staff hours alone.

What should rack management software track?

The last two rows are where internal-IT tools and hosting-provider tools part ways. An enterprise needs an owner to call; a host needs an owner to invoice.

Rack management software compared

Only what each vendor states on its own pages, read on 20 October 2026. “None stated” means we found nothing, not that it is missing.

Free and open source rack management software

NetBox is the default answer for a free tool. It models racks with elevations, devices, cabling with traced paths, power distribution and IP address space, and it is actively maintained: v4.7.3 shipped on 13 October 2026. Its own documentation describes it as a record of how the network should be, not a monitoring system, so live power readings come from somewhere else. It needs PostgreSQL and Redis if you host it yourself, and NetBox Labs sells hosted Cloud plans on quote.

RackTables is the simplest to install and still in use in many server rooms, but its latest release, 0.22.0, is from February 2022. If you are looking for a RackTables alternative, NetBox covers the same ground with regular releases. openDCIM is the most facilities-minded of the free tools, with power capacity and PDU polling, but its last release was 23.04 in October 2023 and its maintainer posted a “maintainer needed” notice in April 2026.

All five open source options, including Nautobot and Ralph, are compared in detail in open source DCIM software in 2026.

Commercial rack management: power and facilities first

Sunbird publishes US prices: dcTrack for asset, capacity and change management at $19.50 per cabinet per month ($234 a year), Power IQ for power and environmental monitoring at $5.50 per node per month, and both together at $27.50 per cabinet per month. Subscriptions are paid a year up front, perpetual licences are quoted, and there is a 30-day trial with your own data.

Hyperview is cloud-hosted at $3 per asset per year with a 500-asset minimum, so at least $1,500 a year, with GBP and euro pricing for the UK and EU. Racks, PDUs and sensors count as assets. Structured cabling is a separate add-on at $2 per asset per year, and its pricing page lists IP address management as “coming soon”.

Device42, now owned by Freshworks, pairs rack elevations with agentless discovery and application dependency mapping and publishes no price. If you are weighing it, see Device42 alternatives.

These tools are built for the people who run the building. They are deep on power chains, sensors and cooling, and none of them sends an invoice.

Rack management for hosting and colocation providers

If you sell rack space, dedicated servers or IP addresses, the rack is also a price list. The questions change:

• Which customer pays for this U? An owner field is a label. An invoice line with a due date is what stops unpaid space from staying occupied.
• Is that server sold or free? The allocator that picks a machine for a new order needs the same record the rack drawing uses, or it will sell a server that is already racked for someone else.
• How many kilowatts are committed, and to whom? A colocation contract commits power. That commitment has to count against the rack’s budget the moment the contract is signed, not when someone updates a sheet.
• What happens when a customer cancels? The switch port goes down, the IP addresses return to the pool and the server returns to stock. If rack records and billing live in different systems, each of those steps is a script you maintain.

The common build is NetBox for the racks, WHMCS or Blesta for invoices and scripts between their APIs. It works, and the cost is in the joins. EasyDCIM narrows the gap with ready-made WHMCS and HostBill integrations. The alternative is one system that holds both.

How FluxBilling handles rack management

FluxBilling is billing software for hosting providers and colocation operators, and its DCIM lives in the same database as clients, services and invoices on every plan.

• Rack editor. Locations hold datacenters, datacenters hold racks of 24 to 48U. Drag servers, blade chassis, switches, routers, firewalls and patch panels into U slots, and mount PDUs on the side rails. The rack management guide covers the editor step by step.
• Power budget per rack. Set the rack’s kW budget with circuit amps, voltage and redundancy. A usage bar adds up the wattage recorded on each device and the kW committed to colocation customers in that rack, turning amber above 70% and red above 90%. Each PDU shows its last SNMP reading: total watts, amps and per-phase amps.
• Colocation on the same record. Drag an unplaced colocation service into a rack and it becomes a block linked to the paying customer, who sees their rack, U range and committed kW in the client portal. Cross-connects carry their own monthly price and are added to renewal invoices; see colocation billing.
• Cables. Patch-panel ports record front and rear connections with cable type and colour, and a trace follows the path through linked panels. Switch ports are linked to the servers behind them by hand.
• Hardware tied to orders. When a dedicated-server order is paid, the allocator takes a matching machine from stock in the chosen location; on termination the machine powers off, its addresses go back to IPAM and it returns to stock.
• Specs without typing. Give a server its management IP and BMC credentials and it reads CPU, memory, drives, NICs and serial over Redfish; switches report model, serial and interfaces over SNMP. Inventory exports to CSV with each device’s location, rack and position; see inventory.

Where it is the wrong choice, plainly. The rack view is front-only, with no rear face or half-depth devices. There is no change history for device moves, so it will not answer “who moved this server last Tuesday”. The power bar is a visual check, not an enforced limit or an alert, and PDU readings are totals, never per outlet. It does not scan your network for unknown devices, map switch ports automatically, model cooling or simulate outages, and it is not a network source of truth with config rendering, as NetBox and Nautobot are. There is no NetBox, RackTables or openDCIM importer: devices come in through the Inventory bulk-add grid, and only EasyDCIM has a dedicated migration tool. FluxBilling is also pre-1.0 and younger than every other product here. If you do not invoice anyone for the racks you track, its billing half is weight you do not need, and NetBox is free.

Plans start at €4.95 a month ($5.95 for US accounts) with DCIM on every tier and a 14-day refund on subscriptions; see pricing, or open the live demo to try the rack editor on sample data.

How to move off a spreadsheet in five steps

1. Fix the naming first. Agree one pattern for sites, rooms, racks and devices before importing anything; renaming 800 devices later is the expensive part.
2. Audit one rack physically. Compare the sheet with reality on one rack. The error rate you find there tells you whether to import the sheet or re-survey everything.
3. Import the skeleton, then fill specs automatically. Sites, racks and positions come from the sheet; CPU, RAM, disks and serials come faster and more accurately from the BMC than from typing.
4. Add power before cables. Circuits and PDU readings prevent outages; cable records save time. Do the one that prevents outages first.
5. Make the spreadsheet read-only on a set date. Two live sources of truth are worse than either one.

Frequently asked questions

What is rack management software?

Software that records the racks in a data centre or server room, every device and its U position, and usually power, cabling and ownership, and draws each rack as an elevation diagram. It is a subset of DCIM.

Is there free rack management software?

Yes. NetBox, RackTables and openDCIM are free and open source. NetBox is the actively maintained one, with v4.7.3 released on 13 October 2026; RackTables last released in February 2022 and openDCIM in October 2023.

What is a rack elevation diagram?

A to-scale drawing of one face of a rack showing each device in its rack units, usually numbered from U1 at the bottom. Good tools draw it from the database, so it is never out of date the way a hand-drawn diagram is.

What can replace Excel and Visio for data centre management?

A DCIM or rack management tool that stores racks, devices, power and cables in one database and draws elevations from it. NetBox is the free option; Sunbird and Hyperview are commercial with published prices; hosting providers that bill for racks can use a DCIM built into billing, such as FluxBilling or EasyDCIM with WHMCS.

RackTables vs NetBox: which should I use?

NetBox for anything new. It covers RackTables’ rack space, IP addresses and VLANs, adds cabling and power modelling and an API, and releases regularly, while RackTables has had no release since 0.22.0 in 2022.

Sources

• NetBox — github.com/netbox-community/netbox releases (v4.7.3, 13 October 2026) and netboxlabs.com/pricing, read 20 October 2026.
• RackTables — github.com/RackTables/racktables tags (RackTables-0.22.0), read 20 October 2026.
• openDCIM — github.com/opendcim/openDCIM releases (23.04, 15 October 2023), read 20 October 2026.
• Sunbird — sunbirddcim.com/pricing, read 20 October 2026.
• Hyperview — hyperviewhq.com/pricing, read 20 October 2026.
• EasyDCIM — easydcim.com/pricing; Device42 — device42.com/pricing (no price published), read 20 October 2026; Device42 data-centre feature page, read 12 October 2026.

NetBox, NetBox Labs, Nautobot, Ralph, RackTables, openDCIM, Sunbird, dcTrack, Power IQ, Hyperview, Device42, Freshworks, EasyDCIM, WHMCS, Blesta, HostBill, Microsoft Excel and Microsoft Visio are trademarks of their respective owners. FluxBilling is not affiliated with or endorsed by any of them. Third-party details are as published on the dates above and may have changed since.