If your UK accounting firm already runs IRIS software, there's a good chance you have access to IRIS OpenSpace whether you actively use it or not. It's the secure document exchange module bundled into IRIS's practice and accountancy software, and for a lot of firms it's the closest thing to a "client portal" they've ever set up, precisely because it came with software they were already paying for.
That makes it a different kind of comparison than most of the others on this site. OpenSpace isn't a venture-backed portal startup competing on features. It's a document-exchange add-on inside one of the UK's largest, longest-established accounting software vendors. The comparison that matters isn't which one has more bells and whistles, it's what OpenSpace was actually built to do, and what still ends up happening over email once it's in place.
What IRIS OpenSpace Actually Is
IRIS OpenSpace is a secure, custom-branded portal for exchanging documents between an accounting firm and its clients. Firms and clients can upload files to each other, documents are encrypted in transit and at rest, accounts are protected with two-factor authentication, and firms that use it for engagement letters, tax returns, or approvals report using it for electronic document signing and approval as part of that exchange.
It's sold as part of the IRIS ecosystem rather than as a standalone product with its own published pricing, which is typical for how IRIS packages its practice and accountancy software. Firms already on an IRIS product get access to OpenSpace as part of that relationship rather than shopping for it independently.
Within that scope, OpenSpace does what it's built to do reasonably well: it's a safer, more auditable way to move documents back and forth than attaching them to email. Firms that use it primarily as "the place tax returns and engagement letters go for signature" get real value from it.
What Osuria Actually Is
Osuria is a branded digital workspace for the whole client relationship, not just the document handoff inside it. Secure document sharing and collection sit alongside centralized client communication, structured requests and reminders, and a client-facing experience that's built to be the client's one place to interact with the firm, not one of several places depending on what they need.
The distinction that matters here isn't security or branding; OpenSpace covers both reasonably well. It's scope. OpenSpace answers "how do we exchange this specific document safely?" Osuria is built to answer "where does this client go for anything involving our firm?", questions, status updates, requests for missing information, ongoing communication, and documents together, not documents as the entire structure clients navigate.
Osuria also doesn't require a firm to be a customer of a specific tax or practice management vendor to use it. It's a standalone workspace, not a module inside a wider desktop-software relationship, which matters for firms that use a mix of tools, or that don't want their client-facing layer tied to a single ecosystem's product roadmap.
Want to see how this works in practice? Explore Osuria’s client portal
Like OpenSpace, Osuria doesn't publish self-serve pricing; firms get a number from a direct walkthrough rather than a public price list, so this isn't a category where either vendor gives you budget certainty upfront.
Side-by-Side
IRIS OpenSpace | Osuria | |
|---|---|---|
Core scope | Secure document exchange and e-signing, bundled into the wider IRIS suite | Client communication, document collection/sharing, requests and reminders in one branded workspace |
How you get it | Typically comes with an existing IRIS practice/accountancy software relationship | Standalone workspace, independent of which tax or practice management software you use |
Pricing model | Not separately published; part of the broader IRIS commercial relationship | Not published; provided via a guided walkthrough |
Center of gravity | The document being exchanged | The ongoing client relationship — documents are one part of it |
Non-document communication | Handled outside OpenSpace (email, phone) | Built into the same workspace as document exchange |
Which One Actually Fits Your Firm
If your firm is already deep in the IRIS ecosystem and your client-facing pain point really is "we need a safer way to send and receive documents than email," OpenSpace is already sitting there, effectively free at the margin since it comes with software you're paying for anyway. There's a real case for using what you already have rather than adding another vendor for a narrower problem.
If your firm's actual pain point is broader than document handoff, clients emailing questions that get lost, no single place a client can see what's outstanding, communication scattered across whoever happens to answer the phone, then a module built to move files safely isn't solving the problem you actually have, even if it's technically installed. That's the gap between a document-exchange add-on and a workspace built around the whole client relationship.
Firms whose real bottleneck is document handoff specifically, and who are already committed to the IRIS ecosystem, have a reasonable low-friction option already available to them. Firms whose bottleneck is the communication chaos around and between documents, not the documents themselves, are the case Osuria is built for.
See It for Yourself
This comparison is directional, not a substitute for looking at how your own firm's clients actually communicate with you today. If document exchange is the only piece of "portal" you've solved for, and everything else about the client relationship still runs through inboxes and phone calls, it's worth seeing what a workspace built around the whole relationship looks like.
Explore the Digital Workspace or start using Osuria to see how a consolidated, branded client communication layer compares to a document-exchange module bolted onto your existing software stack.