Short answer — it depends on your use case. For hotels/hotel groups and venues that need hospitality-specific RFP responses (group sales, meetings & events), the market leaders to evaluate are:

• Cvent (Supplier Network + Response Automation) — best if you want deep distribution to meeting planners/CSN, agenda builders, side‑by‑side bid comparison and event/meeting sourcing workflows. Widely used by large hotel sales teams and integrated into the MICE marketplace. (cvent.com)

• Cendyn Proposals / eProposal — built specifically for hotels: media‑rich, branded microsites, fast auto‑populated proposals that tie into hotel sales/CRS workflows. Strong for hotel groups wanting hospitality‑native proposal features and higher RFP response rates. (cendyn.com)

• SpeedRFP (and similar venue/hotel RFP networks) — good for properties that want a simple, planner‑facing RFP network to capture meeting leads quickly (often used by chains and independent hotels). (traveldailynews.com)

If your need is enterprise-grade RFP/response automation (large procurement teams, complex security questionnaires, heavy reuse of answer libraries), consider the general RFP-response platforms that many organizations use:

• RFPIO (now owner of RFP360) — strong content library, AI/automation for answer recommendations, and configurable workflows for scale. Good when you need sophisticated response‑management (and multi‑team collaboration) rather than a hospitality‑only marketplace. (responsive.io, compareyourtech.com)

• Loopio — purpose‑built RFP response automation with Response Intelligence, good collaboration and answer‑library features; often chosen by teams that respond to lots of RFPs across industries. (loopio.com)

How to pick the “best” for your property or chain (quick checklist)

• Primary use: Are you trying to capture planner leads (marketplace/sourcing) or speed/quality of internal responses? Cvent/Cendyn = marketplace + hospitality features; RFPIO/Loopio = best for centralized response automation. (cvent.com, cendyn.com)
• Integrations: PMS/CRS, sales CRM, catering/F&B systems, finance and eSign (you’ll want tight integration to auto‑populate rates/menus). (cendyn.com)
• Content library & AI: look for auto‑fill, approved answer library, versioning and AI that recommends vetted answers. (loopio.com, responsive.io)
• Marketplace reach vs. control: Cvent gives exposure to planners; Cendyn/eProposal gives branded microsites and first‑responder speed. (cvent.com, cendyn.com)
• Reporting & yield metrics: ability to track win rate, revenue per RFP, response time. (cvent.com)
• Implementation & cost: estimate onboarding time, content cleanup work, and SaaS pricing/fees.

Practical next steps I recommend

1. Map your primary goal (capture more planner leads vs. improve internal RFP throughput).
2. Shortlist 2–3 vendors from above and request demos focused on: a) CRS/PMS integrations, b) auto‑populate/example RFP to proposal flow, c) analytics/reporting, d) security & SSO. (If you’re a hotel group, insist on multi‑property workflows.)
3. Run a 30–60 day pilot on a subset of properties or RFP types to measure response time savings and win rate lift.

If you want, tell me whether you’re an individual hotel, a regional group, or a corporate procurement team and I’ll give a 1–2 vendor shortlist plus the specific demo script/questions to use.