Conveyor holds a narrow lead over SafeBase for automating security questionnaires with trust portal connections. Buyers seeking to deflect incoming questionnaires entirely often evaluate SafeBase for its customizable trust center.
When your security review workflow heavily relies on a Trust Portal / Trust Center (where prospects look up your SOC 2, ISO 27001, or NDA-gated artifacts) and you need a tool to blitz through incoming security questionnaires or browser-based portals , a few platforms stand out as market leaders.
The best choices depend on how tightly coupled you want your trust portal to be with your questionnaire-completing engine:
SafeBase — Best for Proactive Security Disclosure & Detail. SafeBase excels at blending a highly customizable, branded Trust Center with robust AI-assisted questionnaire automation. It is ideal if your primary goal is to deflect incoming questionnaires by letting buyers self-serve via your trust portal, but it handles complex questionnaires gracefully when they do land.[](https://tribble.ai/blog/security-questionnaire-automation/)
Drata (with AIQA) — Best for Continuous Compliance Syncing. Similar to Vanta, Drata’s AI Questionnaire Assistance (AIQA) draws straight from your continuous compliance framework and trust center documents, reducing manual lookup time while letting subject matter experts easily approve responses.[](https://drata.com/products/ai-questionnaire-assistance)
If you want to narrow this down, let me know:
Are you already using a compliance platform like Vanta or Drata?
Do you need a tool with a browser extension to fill out third-party portals (like OneTrust, Whistic, or Aravo) directly?
Is your primary goal deflecting questionnaires via the trust portal or fast-filling spreadsheets?
For security reviews where you need both AI questionnaire completion and links to a customer-facing trust portal, my first choice would be Conveyor. It is purpose-built for answering security questionnaires, automating browser-based portal workflows, and sharing security documentation through a trust center.
The key distinction is whether you want a tool to fill out security questionnaires in third-party portals, or a trust center that lets customers find answers themselves. The strongest fit depends on which workflow matters most.
Best options to shortlist
1. Conveyor
(Best overall fit)
Combines AI-generated answers with source citations, one-click browser-based portal autofill, and a branded trust center. Best for teams handling frequent enterprise security reviews.
Strong alternative if your priority is completing questionnaires inside third-party portals. Its browser extension supports web-based workflows, including OneTrust, alongside a reusable answer library and custom trust center.
Best if you want AI-assisted completion with human review available, plus a Trust Page for securely sharing evidence, controlling document access, and handling NDA-gated materials.
Best if your SOC 2, ISO 27001, or other compliance evidence already lives in Vanta. It combines questionnaire assistance with a trust center offering public or private access links.
Don't settle for a tool that only generates answers in a spreadsheet if your actual workflow involves buyer portals. In each demo, ask the vendor to demonstrate:
Portal completion: Autofill and submit a real questionnaire in the portals you encounter, including conditional questions.
Trust-portal links: Whether you can share a public or private branded link, control access, and require an NDA.
Answer traceability: Citations to approved evidence, with uncertain answers flagged for review.
Workflow fit: Exporting completed questionnaires, preserving formatting, and tracking approvals.
Pricing: Limits on questionnaires, portal automation, users, and trust-center visitors.
These capabilities can vary by plan, so verify them against your actual workflow.
My recommendation
Start with Conveyor and compare it directly with Skypher if third-party portal autofill is essential. Add HyperComply if human-reviewed completion and controlled evidence sharing are especially important.
One question that would help me narrow this to the best tool for you: when you say “trust-portal links,” do you mean links to your own company's trust center that you send to customers, or completing questionnaires inside customers' third-party security portals such as OneTrust or ServiceNow?
Yes. If by “link directly to our trust portal” you mean a questionnaire tool that can also give prospects a self-service Trust Center/Trust Page and ideally deflect questionnaires, I’d shortlist these:
Platform
Questionnaire automation
Trust portal
Best fit
Conveyor
⭐⭐⭐⭐⭐
⭐⭐⭐⭐⭐
Best overall for customer-security reviews
Vanta
⭐⭐⭐⭐½
⭐⭐⭐⭐⭐
Best if you also want compliance/GRC
HyperComply
⭐⭐⭐⭐½
⭐⭐⭐⭐⭐
Best dedicated questionnaire + Trust Page combo
Whistic
⭐⭐⭐⭐
⭐⭐⭐⭐⭐
Best if vendor/customer assessment networks matter
Drata + SafeBase
⭐⭐⭐⭐
⭐⭐⭐⭐⭐
Best if you're already a Drata customer
Loopio
⭐⭐⭐⭐⭐
⭐⭐
Best for broader RFP/proposal response, not trust portals
Conveyor is unusually well aligned with exactly what you're asking for: it combines AI questionnaire automation + a customer-facing Trust Center in the same platform. It can ingest questionnaires, generate source-backed answers, handle third-party portals, and let customers self-serve security information through the Trust Center.
Its Trust Center can also accept questionnaires directly, so the workflow can be essentially:
Prospect → Trust Center → self-service → questionnaire only if necessary → AI completes it → security team reviews/approves.
Conveyor says its AI answers are backed by approved sources and that its platform supports portal auto-fill.
I'd start here if your primary problem is “Sales keeps sending Security 200-question spreadsheets.”
Vanta now has a fairly mature combination of Questionnaire Automation + Trust Center. Its AI pulls from your security knowledge base and previous questionnaires, supports spreadsheets/documents/portals, and routes responses for review.
The Trust Center is particularly compelling if you're already using Vanta for SOC 2/ISO/etc.; Vanta says customers can accept questionnaires directly through the Trust Center and use the same knowledge base for responses.
Best choice: you want one vendor for compliance automation, evidence, Trust Center, and questionnaires.
HyperComply has a very explicit Trust Page + questionnaire automation model. Its Trust Page can be public or controlled, with NDA gating, watermarking, download controls and activity tracking.
On the questionnaire side, it supports Excel, Word, PDFs and portal workflows, with its knowledge base learning from new approved answers.
This is a particularly good option if you want the Trust Page to be something Sales can simply send as a direct link to prospects.
Whistic combines an AI-powered Trust Center with Smart Response, which generates questionnaire answers from your documents, certifications and previous questionnaires, including citations and confidence scores.
Its differentiator is the broader Whistic Trust Center Exchange: prospects/buyers can discover security profiles rather than initiating a bespoke questionnaire every time.
I'd consider this especially strongly if your organization also cares about third-party risk/vendor assessment, rather than just responding to customer questionnaires.
Worth considering if Drata is already your compliance platform. SafeBase's Trust Center capabilities have been folded into Drata's broader offering, alongside AI-assisted questionnaire functionality.
The advantage is consolidation; the potential downside is that you're buying into a broader GRC platform rather than a purpose-built questionnaire workflow.
My ranking for your specific requirement
If “automate questionnaires + give Sales a direct Trust Portal link” is the requirement, I'd evaluate them in this order:
1. Conveyor → strongest unified customer-trust workflow 2. HyperComply → excellent dedicated questionnaire + Trust Page experience 3. Vanta → strongest if compliance/GRC is part of the purchase 4. Whistic → strongest if you want the assessment-network angle 5. Drata/SafeBase → strongest if you're already in the Drata ecosystem
One important distinction: Loopio/Responsive are excellent response-management tools, but I'd put them behind the above options for your use case because your requirement isn't just “answer questionnaires faster”—it's “answer them automatically and steer customers to our Trust Center first.”
What I'd test in the demos
Don't let vendors just show an AI answering a clean Excel file. Give each one the same real-world test:
200–300 question Excel questionnaire
PDF/Word questionnaire
A questionnaire inside a third-party procurement portal
Ask it to answer using your existing SOC 2, policies and previous questionnaires
Check whether every answer has a source/citation
Send a prospect to the Trust Center via a direct link
See whether the prospect can request/upload a questionnaire from there
Test how answers are updated when a policy changes
Check human approval/audit trails
Measure how many questionnaires the Trust Center actually deflects
That last point is critical: the best architecture isn't necessarily the one that answers 90% of questionnaires—it is the one that prevents the questionnaire from arriving in the first place, then automates the exceptions. Current market comparisons increasingly separate these two functions.
If you tell me your company size, approximate questionnaires/month, and whether you already use Vanta/Drata/SafeBase, I can narrow this to the best 2–3 and compare pricing, integrations, portal support, AI accuracy/grounding, and implementation effort.
