Which ERPs actually let you get your data out.

The data in your system is yours. Whether anybody can get at it is a separate question, and your vendor answered it years ago without telling you. It's the difference between a report you can have next week and a project nobody wants to quote.

How this was put together, and what to do if it's wrong

On 8 August 2026 I went through fourteen manufacturing systems. Where the vendor publishes a machine-readable list of what their software can do, I downloaded that file myself and read it, with no account and no login. Nothing below comes off a sales page or a review site.

Two honest limits. Vendors change this without announcing it, so treat everything here as true in August 2026 and not necessarily today. And I've run some of these in a real operation and only read about others, which is a real difference. If you run one of these systems and something here is out of date or flat wrong, tell me. I'll fix the page and credit whoever caught it. That's worth more to me than being right the first time.

The two questions that decide everything

Every answer below comes down to two things, and they're not the same question.

• Can somebody read what's available without being a customer? Most modern software ships a published list of everything an outside program can ask it for. When that list is public, anyone can see what's possible before spending a dollar. When it's behind a customer login, you're buying before you know.
• Can somebody test against it without a live site? Reading a list and getting real records back are different things. A free trial or a downloadable copy means the work can start before you're committed. Without one, the first real test happens on your data, which is slower and costs more.

The fourteen

The findings worth knowing about individually

ProShop publishes no developer interface at all. This was the biggest surprise, because ProShop is well regarded by the people who run it. I pulled their own integrations page and searched it, and the word "API" doesn't appear anywhere on it. The integrations they list are real, QuickBooks, Sage, Paperless Parts, Mastercam and others, they're just built by ProShop or by the partner. There's no published route for anyone else. If you're on ProShop and you want something connected, the first move is a phone call to ProShop asking what route exists, not hiring a developer.

Sage 100 has no modern web interface. Getting data in and out runs through two older mechanisms: a Windows component for writing, and a database link for reading that's read only on the common editions. Sage will support you on the writing side once you've passed a paid certification course. There's an entire category of third party products whose only purpose is to wrap a modern interface around it, which tells you what the work is worth.

Epicor Kinetic is closed on paper and the most helpful in practice. You can't read the endpoint list without being a customer, which makes it hard to judge before you buy. But once you're in, epiusers.help is the best troubleshooting community of anything on this list by a distance. Real engineers posting real failures with real answers, going back years and still active. If you run Kinetic, that forum is a genuine asset and you may not know it exists.

Fulcrum is the most open manufacturing system I found. A complete list, published openly, no account needed: 363 entry points, and most of them can write rather than only read. The list of things it covers reads exactly like a manufacturing operation. Jobs, work orders, work centers, routings, quotes, purchase orders, inventory lots, shipments, scrap, non conformance, tool calibration, time clock. That's a company that means for outsiders to connect to it. One warning if you go looking: there are two unrelated products called Fulcrum, and the manufacturing one is fulcrumpro.com.

Cetec is the only one you can just sign up for. Thirty days free, every module, no customer required and no sales call. Of every real manufacturing system here, it's the only one where somebody can start work today without a live site to point at.

Acumatica lets you download the entire ERP and run it on your own machine for nothing. That's the most complete free test setup of any paid system on this list. Trial mode caps you at two users and watermarks printed reports, neither of which matters when you're building a connection. It's a general business system rather than a manufacturing one, but for testing it beats everything else here.

What to do with this if you're buying

Nobody demos this part, so it's worth asking on your own.

• Ask before you sign: is your interface published, and can my people read it without being a customer? A vendor who says yes has already told you a lot about how the next five years go.
• Ask what a test site costs. For some it's free and self serve. For others it's a line item, and you'll find that out later.
• Open isn't the same as good. The most open systems on this list aren't the strongest manufacturing software, and two of the best regarded manufacturing packages are among the most closed. Judge the software on the software.
• Closed isn't a dead end. It means the route is different, usually slower, and priced differently. What you don't want is finding that out after somebody has quoted you as if it were the easy case.

Where I sit on this

Straight about what I've done rather than what I've read. The connector I've built and run in production is JobBOSS into QuickBooks Online, at a real manufacturer, in daily use today. That's one system, done properly, with the scars to show for it. Everything else on this page I've read carefully and not run.

That distinction matters more than it sounds. Every serious fault in the JobBOSS work showed up only against the customer's live data and was invisible in every test beforehand. A change stamp that was empty on almost every row. A feed that looked healthy for months while quietly reading nothing new. So when somebody tells you a connection to your system is a solved problem, the honest version is that the published list gets you most of the way and your own data finds the rest.

If you're on one of the closed systems, that isn't a no. It changes the shape of the work and the price, and it's worth saying out loud before anyone starts rather than after.

Common questions

Does a published interface mean my vendor will help me use it?

No, and the two come apart more often than you'd expect. At least one system here publishes a complete list while its support policy doesn't cover questions about using it. Meanwhile the system with the best help available is one you can't read anything about until you're a customer. Publishing and supporting are separate decisions.

We're on ProShop or Sage 100. Are we stuck?

No. It means the normal route isn't available and something else has to be worked out, usually direct database access or the vendor's own older mechanism. That's a different kind of project with a different price, not an impossible one. The mistake is treating it like the easy case and finding out halfway through.

Do I need my vendor's permission to read my own data?

Worth checking your own agreement, and I'd rather you did. Reading your own records for your own reporting is normal, but the contract is yours and confirming it early costs nothing.

Why isn't my system on this list?

Because I checked fourteen and stopped. If you run something else and want to know where it sits, ask and I'll go look at it properly. The checking is the easy part.

Related reading. If what you're really after is a straight daily number rather than an integration, start with the manufacturing KPI dashboard nobody opens. If you're on JobBOSS specifically, there's a longer note on getting your data out of JobBOSS, and there are notes on Odoo, ERPNext, Fulcrum and Cetec reporting.