Alternatives to Xometry, Protolabs and Fictiv

There are four ways to buy a custom part. Instant-quote platforms such as Xometry and Fictiv price CAD online and route the order to a partner shop. Digital factories such as Protolabs quote automatically and make most parts in their own plants. Rep firms such as SSG MFG send one RFQ to several manufacturers and manage the program. Or you go direct to a shop.

Check which fits Compare the models

Which sourcing model fits my job?

Pick the part, the quantity and what matters most. The four models re-rank with the reasons, and the SSG builder prices a typical part in that process so you have a budgetary number to go with the answer.

Part or process

Quantity per order

What matters most

The lowest piece price at volume.

SSG builder · budgetary estimate

$6.98per part, all-in

Typical bracket in 1008 crs at 5,000 pcs, tooling $32,890, lead time 6–10 weeks. Budgetary, not a quote.

Manufacturers' rep firmSSG MFG
Best fit
- Stamping is a core SSG line, represented for 25+ years.
- Several principals quoting the same RFQ shows the real price spread.
- A rep negotiates price and tooling terms with competing principals.
Direct to a shop
Good fit
- Any process works if you can find, qualify and audit the shop yourself.
- Good if you have a sourcing team to qualify shops.
- No middle, but you negotiate alone.
Instant-quote platform
Possible
- At least one platform compared here lists stamping.
- At thousands of parts, one platform price is not competed by several makers.
- Pricing is set by software, not negotiated.
Digital factory
Poor fit
- The digital factory compared here doesn't list stamping.
- Quick-turn tools are built for speed; production tools are built for volume.
- Speed is priced in; production piece price is not the focus.

A ranking aid. Coverage uses what each company lists on its own site; weights reflect how each model typically prices and runs work. Price your own part

How does an order move in each model?

The models differ in who sits between you and the plant: software that prices and routes, a manufacturer that makes it, a rep who puts it in front of several plants, or no one.

Buyer → platform → one assigned shop

Who prices it: Platform software, on upload
Who picks the maker: The platform, after you order
Who you talk to: The platform

workprices

How do the four buying models compare?

How each model typically works, not a rating of any one company. For company specifics, with sources, see the pages below.

Instant-quote platformXometry, FictivDigital factoryProtolabsManufacturers' rep firmSSG MFGDirect to a shopYour own supplier base

Who prices it: PlatformSoftware, on upload; Digital factorySoftware, on upload; Rep firmSeveral manufacturers, on your drawing; DirectOne shop's estimator
Time to a first number: PlatformSeconds to minutes; Digital factorySeconds to hours; Rep firmSeconds for SSG's budgetary estimate; firm quotes typically take days to two weeks for tooled parts; DirectDays to weeks per shop
Firm or budgetary: PlatformFirm; order online; Digital factoryFirm; order online; Rep firmBudgetary estimate first, then firm quotes from principals; DirectFirm quote
Process range: PlatformBroad on CNC, printing, sheet metal and molding; tooled lines vary by platform; Digital factoryA set menu, typically molding, CNC, printing and sheet metal; Rep firmThe rep's line card. At SSG, 12 core lines from stamping and deep draw to springs, forging and soft goods; DirectWhatever that shop runs
Volume it suits: PlatformOne part to a few thousand; Digital factoryOne part to a few thousand; more through partners; Rep firmThousands to millions a year; DirectAny, if the shop fits the part
Who picks the plant: PlatformThe platform; Digital factoryThe manufacturer; Rep firmYou, from several quotes, with your rep; DirectYou, after finding and vetting shops
Who negotiates: PlatformNo one; the price is set; Digital factoryNo one; the price is set; Rep firmYour rep, with competing principals; DirectYou
Who runs the program: PlatformPlatform support; varies; Digital factoryThe manufacturer's support team; Rep firmYour rep, with the principal; DirectYou
What you pay: PlatformThe platform's price; Digital factoryThe manufacturer's price; Rep firmThe principal's quoted price; the principal pays the rep; DirectThe shop's price, plus your time

Small end mill machining a copper prototype part held in a vise on a CNC machine

When is a platform or digital factory the right call?

Prototypes and one-offs in CNC, 3D printing, sheet metal or urethane: no tooling, priced well by software.
You need parts in days and a firm price you can order at now.
Quick-turn molded parts in bridge quantities, before production tooling.
The design is still changing and you'll requote every revision.

Line of C-frame mechanical stamping presses with die sets installed on a clean pressroom floor

When does a rep firm like SSG fit better?

Tooled production: stamping, deep draw, die casting, powdered metal, springs and fourslide, forging, rubber, screw machining, soft goods.
Steady volume, from thousands to millions a year, where piece price decides the program.
You want several plants quoting and someone negotiating tooling terms and price.
The program needs managing: first article, PPAP, releases, changes and corrective action.

SSG has represented principals for more than 25 years. The part builder gives an instant budgetary estimate, and the API and MCP server give the same estimate to your software and AI agents.

How does SSG compare with each company?

Sourced from each company's own site, checked September 29, 2026. Where they win, the page says so.

Background: what a manufacturers' rep does, how to choose a process, tooling ownership, principal.

Questions buyers ask about sourcing platforms

What is the best alternative to Xometry?

It depends on the part. For fast CNC, 3D printed or sheet metal prototypes, another instant-quote platform or a digital factory such as Protolabs is the closest swap. For tooled production parts such as stampings, deep draws, powdered metal, springs or forgings, a manufacturers' rep firm like SSG MFG puts one RFQ in front of several specialist plants.

What is the difference between a manufacturing marketplace and a manufacturers' rep?

A marketplace sets the price in software and assigns a shop from its network. A manufacturers' rep represents specific manufacturers, called principals, sends your RFQ to several of them, and negotiates and manages the program. With a rep you know which plant makes the part before you order.

Are instant quotes firm?

On instant-quote platforms and digital factories, the price on screen is the price you order at. SSG's builder is different: its instant number is a budgetary estimate with DFM feedback, and the firm price comes from principals after they review the drawing. That review matters most for tooled parts.

Does using a rep firm cost the buyer more?

The buyer pays the principal's quoted price and nothing to the rep. The principal pays the rep a commission on orders that ship, as a sales cost, the same way a plant pays its own salespeople. Several principals quoting the same RFQ is what keeps that price honest.

Can I use a platform for prototypes and a rep for production?

Yes, and many teams do. Prototypes on an instant-quote platform or at a digital factory, then production tooling through a rep once the design is frozen and demand is steady. Send the production RFQ with the prototype learnings and the annual volume.

When should I go direct to a shop?

When you already know a shop that fits the part, have a sourcing or supplier quality team to qualify and audit it, and have enough volume for the shop to treat you as a key account. Without those, a rep firm or a platform does that work for you.

Get a budgetary number now, firm quotes from several plants next.

Estimate the part in the builder, then send one RFQ. Your rep places it with principals qualified for the process.

Build a part Send a drawing