Best RFP Software: User Reviews and Comparisons

Your team closed three enterprise deals last quarter, which means someone filled out at least 15 security questionnaires, probably more. Each one pulled a sales engineer or GRC analyst away from actual revenue work for a full day of answering questions you've seen before. When you're comparing RFP AI software, the real test is whether the tool can handle OneTrust and ServiceNow portals natively or if it stops at suggesting answers you paste in manually. Portal automation is the difference between saving 30 minutes per questionnaire and saving 8 hours.

TLDR:

• Wolfia auto-fills RFPs in OneTrust, ServiceNow, and 45+ portals with cited answers
• Most RFP tools require manual library upkeep; Wolfia syncs with existing docs automatically
• Per-seat pricing punishes growth; all-inclusive models keep costs predictable
• Legal review modules handle security addenda without routing to outside counsel
• Wolfia offers native portal automation, legal review, and zero-lift onboarding for B2B SaaS teams

RFP software helps teams respond to requests for proposals, vendor security assessments, and due diligence questionnaires without starting from scratch every time. Instead of manually drafting answers, the software pulls from your existing documentation and generates responses automatically.

The appeal is straightforward. When enterprise buyers send a 200-question security questionnaire before signing a contract, someone has to fill it out. AI RFP tools take that burden off your team by matching incoming questions to answers you've already approved, keeping responses consistent and traceable across every deal.

Not all RFP software is built the same, and the differences show up fast once you're under deadline pressure.

Here's what we weighted when comparing tools:

• AI accuracy and hallucination prevention. Does every answer cite its source, or are you guessing what the AI made up?
• Knowledge base management. Self-maintaining or manually tagged? One scales, the other doesn't.
• Native portal support. Can the tool fill OneTrust, ServiceNow, or Ariba directly, or does it just suggest answers you paste in yourself?
• Setup time. Months of onboarding kills ROI before you see a single benefit.
• Pricing structure. Per-seat pricing punishes growth. All-inclusive models don't.
• Integration depth. Does it pull from your existing Confluence, Google Drive, or SharePoint docs, or do you rebuild from scratch?
• Source citations. Teams won't trust AI output they can't verify.

These criteria decide whether your security team actually trusts the tool, how much ongoing upkeep you're signing up for, and what your true cost looks like long-term.

Wolfia is built for security and sales teams buried in vendor assessments, DDQs, and security questionnaires. Where most tools suggest answers you still have to copy-paste, Wolfia auto-fills entire questionnaires across Excel, PDF, Word, and web portals directly. Responses move 10x faster, with every answer traced back to a source document.

Zero-lift onboarding is a real differentiator. No months of tagging your knowledge base. Wolfia pulls from your existing Confluence, Google Drive, and SharePoint docs and keeps that knowledge current automatically.

• Auto-fill across Excel, PDF, Word, and web portals
• Portal Agent for OneTrust, ServiceNow, Ariba, Coupa, and more
• Chrome extension for browser-based questionnaires
• Slack Agent for instant security answers mid-deal
• Free Trust Center with no volume caps
• Legal review module for security addenda and contract redlining
• Wolfia Expert flags weak or incomplete answers before you send
• Source citations on every answer, no exceptions

Customers like Amplitude, ThoughtSpot, and Miro use Wolfia to get through security reviews without pulling engineers or GRC leads into every questionnaire cycle.

Wolfia's Portal Agent handles OneTrust, ServiceNow, Zip, and 45+ web portals automatically, without manual copy-paste work. The knowledge base self-maintains by syncing with Notion, Google Drive, Confluence, SharePoint, Vanta, and Drata. Every response cites its source, backed by 10+ hallucination prevention guardrails. A built-in legal review module covers security addenda and contract redlining. Unlimited users, zero per-seat fees.

Good for: B2B SaaS companies handling 200+ security questionnaires per year who need native portal automation and legal review without per-seat pricing friction.

Responsive (formerly RFPIO) has been around since 2015 and focuses on document-based RFP workflows built around a manually maintained content library.

Here's what they offer:

• Content library with tagging and categorization for answer management
• AI-powered search across manually maintained answers
• Document-based RFP workflow with section assignment and approvals
• Import/export functionality for questionnaire documents

Good for: Large proposal teams with existing content libraries who need RFP project management workflows and have dedicated resources for ongoing library maintenance.

Limitation: No native portal support for OneTrust or ServiceNow. The content library requires ongoing tagging, categorization, and manual cleanup to stay useful.

Bottom line: Responsive works if your team already has a well-maintained library and handles mostly document-based RFPs. If your questionnaires live in vendor portals, or if no one owns library upkeep, that maintenance burden compounds fast.

Loopio is an RFP response tool built around a content library with AI-assisted answer suggestions and a browser extension for web-based questionnaire support.

Here's what they offer:

• Content library with tagging, sections, and answer categorization that gives teams a structured place to store and retrieve approved responses
• AI Magic tool for generating draft responses pulled from existing library content
• Browser extension for filling web-based security questionnaires without leaving the browser
• Workflow tools for routing sections to subject matter experts for review and approval

Good for: Mid-size teams running structured RFP processes who want collaborative review workflows and already have someone maintaining the content library.

Limitation: Like Responsive, Loopio lacks native portal automation for OneTrust or ServiceNow. The browser extension helps with web forms but does not fully auto-fill the way a dedicated portal agent does. Answer quality depends on how well-maintained the underlying library is.

Bottom line: Loopio is a solid pick if your workflow is mostly document-based and you have bandwidth to keep the content library clean. For teams dealing with vendor portals regularly, the gap in portal support becomes a bottleneck.

Loopio's content library supports categories and tags to organize past responses, with Magic AI generating answer suggestions alongside a Quality Score to flag confidence levels. A Chrome extension with SmartScan and SmartFill handles web portal submissions. Project management includes section delegation and approval workflows, though the Advanced plan is required for full feature access.

Good for: Teams with existing Loopio libraries who need RFP project assignment and collaboration across large proposal teams.

Limitation: No native portal integration for OneTrust or ServiceNow, only browser extension support. Library maintenance becomes overwhelming after 6 to 12 months, and Magic AI requires manual verification due to accuracy concerns.

Bottom line: Loopio handles basic RFP workflows for teams willing to invest in library upkeep, but browser extensions break with portal updates and lack the review-before-submission workflow that native portal automation delivers.

Conveyor combines trust center and questionnaire automation, though both depend on manually maintained Q&A pair libraries.

• Trust center with self-serve security documentation access
• Chrome extension for portal questionnaire filling
• AI answer generation from uploaded Q&A pairs
• Credit-based pricing with Professional tier starting at $9,600/year

Good for teams wanting a combined trust center and basic questionnaire tool who have bandwidth to keep Q&A pairs updated.

Limitation: Knowledge bases go stale fast because updates require manual Q&A pair editing instead of syncing with source docs. Credit-based pricing creates friction around which prospects get trust center access. Salesforce integration is locked behind the Advanced tier.

Bottom line: The static Q&A approach creates a maintenance burden that compounds over time.

Arphie is an AI-native RFP response tool aimed at sales teams handling general proposal workflows.

Here's what they offer:

• AI-powered RFP and DDQ response generation that connects to your existing content in Google Drive and Confluence
• An 84% acceptance rate claim for AI-generated responses, though no detail is published on how hallucinations are prevented
• Per-user pricing in the $150-300/month range

Good for: Sales teams responding to general RFPs without security-specific requirements.

Limitation: No native portal support for OneTrust or ServiceNow, English-only with no multi-language support, and no source citations on AI answers.

Bottom line: Arphie handles general RFPs adequately, but unverifiable AI answers are a real risk when one wrong response can derail an enterprise deal.

Vanta is primarily a compliance automation tool for SOC 2, ISO 27001, and similar frameworks. Its questionnaire feature is an add-on to that core compliance work, not the main product.

• Automated evidence collection tied to compliance frameworks
• AI-assisted questionnaire responses drawn from existing compliance data
• Policy management and access control monitoring

Good for: Teams already using Vanta for compliance who want basic questionnaire support without adding a separate tool.

Limitation: Questionnaire automation is secondary to Vanta's compliance focus. Portal support is absent, and teams with high questionnaire volume will hit the ceiling of what a compliance-first tool can handle.

Bottom line: If you run fewer than 50 security questionnaires per year and already pay for Vanta, the built-in feature may be enough. Beyond that, the gaps show quickly.

Vanta's questionnaire automation analyzes previously submitted security questionnaires alongside existing security documentation to build a knowledge base, supporting responses in form, spreadsheet, or third-party portal formats. Trust center integration aligns with compliance frameworks, and Slack keeps teams in sync on responses. Multi-language support covers Spanish, French, German, and Portuguese.

Good for: Companies already in the Vanta ecosystem who want questionnaire capabilities layered onto active compliance monitoring.

Limitation: Questionnaire automation is secondary to Vanta's core compliance product. Teams report it works best alongside active Vanta monitoring, not standalone.

Bottom line: Vanta excels at compliance automation, but deeper questionnaire-specific features like native portal automation and self-maintaining knowledge bases require dedicated tools beyond their compliance product.

A few quick sentences rarely settle a vendor decision the way a side-by-side view does.

The portal support and knowledge base rows tell most of the story. Every other tool on this list asks you to maintain something manually, whether that's a tagged content library, a Q&A pair database, or a categorized answer bank. That upkeep cost is invisible at signup and very visible six months in.

Every alternative on this list asks someone to own the library. That person gets buried in tagging, updating, and cleaning up stale answers. Wolfia removes that job entirely.

Two problems kill most RFP automation before it pays off: knowledge bases that go stale, and portals that don't get filled automatically. Wolfia solves both. Source docs sync automatically, so answers stay current without anyone manually editing Q&A pairs. And where competitors stop at browser extensions or copy-paste suggestions, the Portal Agent goes into OneTrust, ServiceNow, and 45+ other portals and completes submissions end-to-end, with a review step before anything is sent.

Source citations on every answer mean your team isn't guessing what the AI pulled from where. Legal review for security addenda means you're not routing contracts to outside counsel for every deal. And all-inclusive pricing means your cost stays predictable as volume grows.

For B2B SaaS teams handling 200+ security questionnaires per year, Wolfia is the only tool on this list that covers portal automation, self-maintaining knowledge, legal review, and hallucination prevention without requiring a dedicated librarian to keep everything working.

Picking RFP software comes down to whether you're automating the actual work or just organizing it differently. Browser extensions break with portal updates, and manually tagged libraries go stale faster than teams expect. If your security questionnaires live in OneTrust or ServiceNow and you need answers that cite their sources, grab time with us to see what full portal automation looks like.

Wolfia is the only tool on this list with native portal support that auto-fills OneTrust, ServiceNow, Ariba, Coupa, and 45+ other portals directly. Every other option relies on browser extensions or manual copy-paste, which break when portals update and add hours of unnecessary work per questionnaire.

If you're already using Vanta for compliance, their built-in questionnaire feature may cover basic needs without adding another vendor. For teams not using Vanta, look for tools with minimal setup requirements and consider whether you have someone who can maintain a content library long-term, since most options require manual upkeep.

Self-maintaining knowledge bases sync automatically with your existing docs in Confluence, Google Drive, or SharePoint and stay current without manual editing. Manually maintained libraries require someone to tag, categorize, and update Q&A pairs or content blocks every time information changes, creating a maintenance burden that compounds after six months.

Only Wolfia includes a legal review module that redlines security addenda and customer contracts, flags problematic clauses, and suggests edits based on your organization's standards. The other tools focus exclusively on questionnaire responses and don't cover contract workflows.

Wolfia is built for teams without dedicated librarians or content managers. The knowledge base pulls from your existing documentation and self-maintains, so you're not stuck updating tagged libraries or Q&A pairs every time your security posture changes.