What is the best RFP software available today?

There isn't one best RFP software, there's the one that fits how your team actually works: how your content is sourced, where your data sits, and how fast you need a draft on a Friday afternoon. Every vendor publishes a top 10 or top 30 list with itself at number one, which tells you nothing except that rankings are marketing. What actually separates good RFP tools from bad ones is narrower than the feature lists suggest: can you trust the answer it gives you, and can you prove where that answer came from.

What actually matters more than the feature list

Most RFP software roundups compare feature checklists: AI drafting, integrations, template libraries, e-signature. That's easy to write and easy to skim, but it's the wrong axis. Nearly every tool in this space can generate a first draft. The question is whether that draft is right, and whether you can check it fast enough to trust it.

The failure mode we see most often isn't a missing feature. It's a team that picks the tool with the flashiest AI, gets a confident-sounding answer to a security question, and then spends two hours hunting through old documents to work out whether it's actually true. Sourcing isn't a nice-to-have on top of drafting. It's the thing that makes drafting usable.

The categories you'll run into

Underneath the marketing, RFP software tends to fall into a few real categories. Content libraries that store and search past answers but leave the drafting to you. AI drafting tools built to generate a first pass fast, with varying degrees of citation and control. Review and workflow tools focused on routing, approvals and deadline tracking rather than the writing itself. And enterprise suites that bundle proposal, CRM and e-signature into one contract, usually with a longer sales cycle to match.

These categories blur in practice, most vendors borrow from all four. The useful question isn't which category is best, it's which gap is actually costing you time right now. If your bottleneck is finding the right past answer, a library helps. If it's writing the first draft, drafting speed matters more. If it's chasing sign-off from five stakeholders, workflow is the thing to fix.

When none of them quite fit

Every so often the honest answer isn't a ranking at all. It's that none of the standard products match how your process actually runs. An approval chain with five sign-offs. A content library that needs to sit inside a system none of these vendors have heard of. A questionnaire format your industry invented and nobody else uses. That happens more than any top 10 list admits.

If that's where you are, ask directly whether a vendor will build around your setup or just expect you to adapt to theirs. On our side, Scale customers can talk to us about custom integrations and workflow needs that fall outside the standard plans, rather than being told to make do. Worth having that conversation before you write off software entirely because nothing off the shelf lines up.

Questions worth asking before you sign anything

Skip the demo script and ask the awkward stuff directly. Where does an answer come from, and can I see the source document, not just a confidence score. What happens when the tool can't find a good answer, does it guess or does it tell me. Where is our data stored, is it used to train anyone else's model, and is it separated from other customers. What's the actual monthly cost with our number of users, not a quote that needs three follow-up calls to get.

Then run a real trial with your own content, not a demo dataset the vendor has tuned to look good. Upload a handful of your own approved answers and a real questionnaire, and see what comes back. A tool that looks impressive on a canned demo and falls apart on your actual security questionnaire isn't the best RFP software for you, whatever the roundup said.

Security and compliance, plainly

For a lot of enterprise buyers this is the decision, not a footnote. If your security team is going to reject a vendor over a missing certification, better to know that on day one than after three months of onboarding.

On our side: data is stored in the UK, each customer's content is isolated by tenant, and none of it is used to train shared AI models. We don't hold SOC 2 or ISO 27001 certification yet, and we say so plainly rather than let it come up as a surprise mid-deal. If those certifications are a hard requirement for your organisation today, that's worth knowing before you invest time in a trial.

Pricing that's actually easy to compare

A lot of RFP software hides its price behind a demo request, which makes real comparison across vendors nearly impossible without weeks of sales calls. That opacity is itself worth noticing: if a vendor won't put a number on a page, ask why.

We publish ours. Base is 149 pounds a month, Growth is 399, Scale is 849, all with unlimited users so cost doesn't climb just because your team grows. You can start free with no card required, which is the fastest way to find out if a tool actually fits before anyone signs anything.

How to actually decide, not just read another list

The honest answer to 'what's the best RFP software' is: run your own shortlist through the questions above, with your own content, and let the trial do the deciding. A ranking written by a vendor about itself, ours included, is marketing. A tool that sources its answers correctly on your third-hardest security question is evidence.

If sourcing, UK data storage and straightforward pricing matter more to you than a certification you can check later, Airprose is worth putting on that shortlist. If SOC 2 or ISO 27001 is a hard gate today, we're not the right fit yet, and it's better you hear that from us than find out three demos in.