Thomasnet vs Xometry: Which One Do You Actually Need?

Thomasnet vs Xometry is a strange comparison, because the two are owned by the same company: Xometry acquired Thomas, the business behind Thomasnet.com, in December 2021 for $300 million in cash and stock. Yet they do almost opposite jobs. Thomasnet is a free directory you search to discover North American industrial suppliers. Xometry is an on-demand marketplace where you upload a CAD file and buy a finished custom part, made by a shop in its network, with Xometry as the counterparty on the order. If you need to find a factory and contract with it directly, use Thomasnet. If you need a machined or molded part fast and do not want to manage a shop, use Xometry. This guide breaks down which fits which job, and where both leave a gap.

The short answer: same owner, two different jobs

Think of it as discovery versus transaction. Thomasnet is where you look up companies that make things; you find a supplier, then take the conversation to your own email and RFQ. Xometry is where you hand over a part file and get the part back; the platform prices it, routes it to a capable shop, and stands behind the order. One hands you a list of manufacturers to qualify. The other hands you a finished component and keeps the factory in the background.

That single distinction decides almost every choice between them. A procurement engineer sourcing a domestic contract manufacturer for a recurring build wants Thomasnet. A hardware designer who needs ten CNC brackets by Friday wants Xometry. Neither is better in the abstract, and because they share an owner you sometimes end up using both in the same project.

What Thomasnet is built for

Thomasnet is a long-established directory of North American manufacturers and industrial suppliers. It reports more than 500,000 commercial and industrial sellers and over 1.3 million registered users, including a large share of the Fortune 1000, with more than 20 million sourcing sessions run on it each year. Its strength is depth in industrial categories: components, raw materials, custom machined parts, MRO supplies, and domestic contract manufacturing. The audience skews toward engineers, procurement teams, and businesses that specifically want suppliers inside the United States and Canada.

The value of Thomasnet is domestic discovery: shorter shipping, easier communication, familiar regulatory standards, and the ability to find a factory that already makes something close to what you need. The trade-off is that it is a directory, not a transaction. You find suppliers there, but quoting, vetting, and ordering happen off-platform through your own outreach, and results position reflects what a supplier pays for advertising as well as how well it matches your need. Our Thomasnet alternative page covers how that plays out when you actually start reaching out.

What Xometry is built for

Xometry, founded in 2013 in North Bethesda, Maryland and public on the Nasdaq under the ticker XMTR, runs an on-demand manufacturing marketplace for custom parts. You upload a CAD file or a spec, its Instant Quoting Engine returns a price and a lead time in seconds, and the part is produced through a supplier network it reports at more than 10,000 shops. The core categories are CNC machining, 3D printing, sheet metal fabrication, injection molding, and die casting.

The value of Xometry is speed and abstraction. You do not find, negotiate with, or vet a shop; you buy a part and let the marketplace match the job to a capable supplier and stand behind the result. For a prototype, a low-volume production run, or a custom component on a deadline, that trade is often exactly what you want. The cost of it is that you never choose or build a relationship with the factory, and the model is built around fabricated parts rather than finished consumer goods. Our Xometry alternative comparison goes deeper on where the marketplace model stops fitting.

Thomasnet vs Xometry: a side-by-side view

The clearest way to choose is to compare them on the dimensions that actually drive a sourcing decision.

The shared ownership matters when you read either platform. On Thomasnet, a top result is partly a marketing signal, because much of Xometry's supplier-services revenue comes from advertising and lead generation sold to manufacturers. On Xometry, you are trusting the marketplace to match your job well, which it usually does, but you never see the shop. Neither is a flaw, exactly; both just move the qualification decision away from you, in opposite directions.

When to use Thomasnet

Reach for Thomasnet when the job is to find a company, not to buy a part. It fits when you need a domestic contract manufacturer, an industrial component supplier, a specialty machine shop, or an MRO vendor, and you intend to build a direct relationship, negotiate, and reorder over time. It is the right tool for procurement teams and engineers who know they want US or Canadian production and are prepared to do their own outreach and vetting.

It fits less well for finished consumer products. A brand making apparel, cosmetics, food, or home goods usually finds Thomasnet skewed toward industrial and MRO categories rather than the co-packers and consumer-goods factories it needs. For that landscape, our comparison of the US manufacturers directory options and the step-by-step guide to how to find a US manufacturer cover the rest of the field.

When to use Xometry

Reach for Xometry when you have a defined part and a CAD file, and you want it made without managing a supplier. It shines for prototypes, iterations, and low-volume production of machined, printed, or molded components on a tight timeline. The Instant Quoting Engine removes the days of back-and-forth that custom fabrication used to require, and the marketplace absorbs the work of finding a capable shop and standing behind the order.

It fits less well when you do not have a part file, but a product to build and a factory to find. There is no CAD file to upload for a skincare line, a coffee brand, a run of cut-and-sew apparel, or private-label supplements, and no machining spec to quote. Those are made by contract manufacturers and co-packers, sourced through a factory-finding workflow rather than an instant parts quote. That is also where the difference between Thomasnet and its sibling shows most clearly, and it is worth reading alongside our Alibaba vs Thomasnet comparison if overseas production is still on the table.

The gap both leave: finding and vetting the factory itself

Whichever sibling you use, the same limitation shows up. Thomasnet gives you listings and leaves the qualifying entirely to you. Xometry takes the qualifying away entirely and never hands you the shop. In both cases, the middle ground, where candidates are found for you and the evidence behind each one is shown so you can choose, is missing. That is slow, repetitive work: confirming identity, cross-checking registries and customs records, surfacing certifications, and lining up quotes, minimums, and lead times across many suppliers so they are actually comparable.

An AI sourcing agent is built for that middle ground. You describe what you need to make in plain English, get a ranked shortlist of vetted factories with identity, registry, and customs cross-checks shown as evidence, and compare quotes, MOQs, and lead times side by side, then contract with the manufacturer directly. It reduces the manual searching and vetting a directory was never designed to do, though a sample order and a human decision still belong to you. When you are lining up several PDF quotes to compare, it also helps to pull the line items out of each document so the numbers sit next to each other. Our guide on how to vet a supplier shows how much there is to check before you place a production order, and the AI sourcing agent page shows how the shortlist comes together from a single brief.