Best DDQ software in 2026 — 8 tools compared

If you're reading this, you already know the pain. A prospect sends a 200-question Excel spreadsheet, your deal stalls until it's done, and the CTO ends up copying answers from last quarter's Google Doc at 11 PM.

DDQ software exists to fix this. But the market has matured fast — there are now 8+ tools that claim to automate security questionnaires, and they're very different from each other.

Some are purpose-built DDQ tools. Others are compliance platforms that bolted on questionnaire features. Some cost $69/month. Others cost $50K/year. This guide helps you pick the right one.

How we categorized these tools

DDQ software falls into three categories:

1. DDQ-first tools — Built specifically for completing security questionnaires. Fast setup, focused features, typically startup-friendly pricing.
2. RFP/proposal platforms — Built for enterprise proposal teams. DDQs are one use case among many. Complex, expensive, feature-rich.
3. Compliance platforms with DDQ add-ons — SOC 2/ISO 27001 tools that added questionnaire features. Good-enough for some, limiting for others.

Understanding which category a tool belongs to tells you most of what you need to know.

Quick comparison

DDQ-first tools

FillBase

Best for: Seed to Series B SaaS teams where the CTO or VP Engineering owns DDQs.

FillBase is purpose-built for DDQ completion. Upload your SOC 2, security policies, and past responses — FillBase builds a knowledge base and auto-fills future questionnaires with source-cited answers. The Slack-native workflow means you can forward a DDQ to FillBase and get it back completed without leaving your workflow.

What stands out:

• ~90% auto-fill rate with source citations on every answer
• Slack-native: forward a questionnaire, get it back completed
• Handles Excel, Word, PDF, and vendor portal exports
• Free tier (200 requirements/month) to evaluate before buying
• 30-minute setup — upload docs, submit first DDQ

Pricing: Free → $149/mo (Starter) → $599/mo (Growth). No annual contracts.

Limitations: No trust center or NDA automation. DDQ completion only.

Conveyor

Best for: Funded startups that want a trust center AND DDQ automation in one platform.

Conveyor's core product is a public-facing trust center — a page where prospects can review your security posture before the sales cycle. DDQ automation is included and solid. If you need both, Conveyor is a strong single-vendor choice.

What stands out:

• Trust center + DDQ + NDA automation in one platform
• Customer self-serve security portal reduces inbound questionnaires
• AI-powered DDQ completion with citations
• Clean, modern interface

Pricing: Custom pricing, typically $1,000+/month with annual contracts.

Limitations: No free tier. Overkill if you only need DDQ completion. Requires a sales conversation.

AutoRFP

Best for: Solo founders and very small teams on a tight budget.

AutoRFP offers GPT-powered DDQ completion at the lowest price point. If budget is your primary constraint and you need something better than copy-paste, AutoRFP gets the job done.

What stands out:

• Lowest entry price ($69/mo)
• GPT-based completion covers broad question types
• Simple interface, fast setup

Pricing: $69/mo → $299/mo → $899/mo.

Limitations: GPT-based approach means some answers come from general knowledge rather than your documents. Partial source citations. No Slack workflow.

RFP & proposal platforms

Loopio

Best for: Enterprise teams with dedicated proposal staff managing 100+ RFPs per year.

Loopio is the incumbent in RFP response management. It's comprehensive: content library, project management, reviewer workflows, and now AI-assisted answers. If you have a 5+ person proposal team and manage dozens of RFPs per quarter, Loopio is purpose-built for your workflow.

What stands out:

• Mature content library with SME review workflows
• Project management (assignments, deadlines, approvals)
• Import from and export to any format
• Strong enterprise integrations (Salesforce, SharePoint)

Pricing: ~$30K+/year. Enterprise sales process.

Limitations: Overkill for startups. Requires content library maintenance. Months of implementation. The content library is manually curated, not AI-learned.

Responsive (formerly RFPIO)

Best for: Enterprise proposal teams that need comprehensive RFP management.

Responsive (rebranded from RFPIO in 2023) is Loopio's main competitor in the enterprise RFP space. Similar capabilities, different interface. If you're evaluating Loopio, you should also evaluate Responsive.

What stands out:

• Full RFP lifecycle management
• AI Answer Engine for suggestion-based completion
• Extensive integration ecosystem
• Strong governance and compliance features

Pricing: ~$30K+/year. Enterprise sales process.

Limitations: Same as Loopio — enterprise pricing, long implementation, requires dedicated staff to maintain.

Security profile & trust center tools

Whistic

Best for: Companies that want to proactively share their security posture and reduce inbound questionnaires.

Whistic takes a different approach: instead of completing questionnaires faster, reduce how many you receive. Publish your security profile on the Whistic Blue network and let buyers self-serve. When DDQs do come in, Whistic helps manage them.

What stands out:

• Proactive security sharing reduces questionnaire volume
• Whistic Blue network connects buyers and vendors
• Assessment management for inbound reviews
• Free tier for assessment sharing (vendor side)

Pricing: Free for basic sharing. Paid plans for assessment management and proactive outreach (contact sales).

Limitations: Doesn't eliminate DDQs — enterprise buyers still send custom ones. Not a DDQ completion tool per se.

Compliance platforms with DDQ features

Secureframe

Best for: Companies already using Secureframe for SOC 2/ISO 27001 who want basic DDQ features in the same platform.

Secureframe is a compliance automation platform that added questionnaire features. It leverages your compliance data (controls, evidence, policies) to help answer security questions. Smart integration — but the questionnaire features are secondary to the compliance platform.

What stands out:

• Uses your existing Secureframe compliance data to answer questions
• No additional knowledge base setup if you're already a customer
• Covers standard compliance questions well
• One vendor for compliance + questionnaires

Pricing: Included in higher-tier plans. Secureframe platform costs $15K–$50K+/year.

Limitations: Questionnaire features are an add-on, not the core product. Limited format support. Struggles with custom questions outside SOC 2/ISO 27001 scope.

Drata

Best for: Companies already using Drata for compliance who want questionnaire features without adding another vendor.

Drata, like Secureframe, is a compliance automation platform with questionnaire features. If you're already paying for Drata, their questionnaire automation is a natural extension.

What stands out:

• Leverages your compliance evidence for questionnaire answers
• 75+ integrations for automated evidence collection
• Continuous monitoring feeds into questionnaire responses
• One vendor for compliance + questionnaires

Pricing: Included in higher-tier plans. Drata platform costs $10K–$50K+/year.

Limitations: Same as Secureframe — questionnaires are secondary. Custom DDQs with product-specific questions often fall outside compliance data coverage.

How to choose

If you're a startup/mid-market team and DDQ speed is the priority: Start with FillBase (free tier → Starter). You'll know within one DDQ if it works.

If you want DDQ + trust center in one tool: Evaluate Conveyor.

If you have an enterprise proposal team: Evaluate Loopio and Responsive side-by-side.

If you want to reduce questionnaire volume: Add Whistic for proactive sharing. You'll still need a DDQ tool for the ones that come through.

If you're already on Secureframe or Drata: Try their questionnaire features first. If accuracy or format support falls short, add a dedicated DDQ tool.

The accuracy question

All of these tools use AI in some form. The difference is grounding.

• Grounded AI (FillBase, Conveyor) answers from your documents and cites the source. When the AI doesn't have an answer, it flags the question instead of guessing.
• General AI (AutoRFP) uses GPT to generate plausible answers from a mix of your documents and general knowledge. Faster coverage, but higher risk of hallucinated answers.
• Compliance-grounded (Secureframe, Drata) answers from your compliance data specifically. High accuracy for SOC 2/ISO 27001 questions, lower for everything else.

In DDQs, a wrong answer isn't just unhelpful — it creates legal liability and can kill a $500K deal. Choose grounded AI over general AI every time.

Our recommendation

For most SaaS teams selling to enterprise, a DDQ-first tool delivers the best ROI. You don't need RFP project management. You don't need a trust center. You need the 200-question Excel file completed accurately by Friday.

Start with a free tier, complete one real DDQ, and evaluate the auto-fill rate and citation quality. That tells you more than any feature comparison table.

Detailed tool comparisons

See our in-depth side-by-side comparisons: FillBase vs Conveyor, FillBase vs Loopio, FillBase vs Vanta, FillBase vs Responsive, FillBase vs Secureframe, FillBase vs Drata, FillBase vs Whistic, and FillBase vs AutoRFP. Or browse all comparisons.