If you mean free to use for brokers/clients and aimed at reinsurance placement, renewal comparison, and quote management, the market is pretty fragmented. The best options tend to be marketplaces, broker portals, and workflow platforms rather than truly open “comparison engines.” Also, many are free only to access; the carrier/market side usually pays.

Here are the strongest free or low-friction platforms to consider:

1) BMS Re View / broker market portals

• Useful for: managing renewal submissions, market feedback, quote tracking
• Strengths: structured placement workflows, market response consolidation
• Limits: usually tied to a broker relationship or internal access

2) Ardonagh / Gallagher / Aon / Marsh digital placement portals

• Useful for: reinsurance quote gathering and renewal comparison through major brokers
• Strengths: strong carrier network, renewal analytics, submission management
• Limits: access generally restricted to clients of the broker

3) Specialty reinsurance marketplaces / MGA exchange portals

Examples vary by region and class of business.

• Useful for: comparing facultative, treaty, and specialty layer options
• Strengths: faster turnaround, side-by-side terms
• Limits: not universal, often niche-specific

4) Lloyd’s / London market electronic placement tools

Depending on the product:

• PPL (Placing Platform Limited) for digital placement and quote comparison
• Whisper / e-market workflow tools depending on the market participant setup
• Strengths: strong for London market reinsurance placement
• Limits: not a public free marketplace; access requires market participation

5) Sapiens / Guidewire / other broker workflow systems

• Useful for: renewals, quote comparisons, submission tracking
• Strengths: good for organizing multiple quotes and versions
• Limits: these are workflow systems, not independent quote marketplaces

6) RTI / ReSource / reinsurance data platforms

• Useful for: market intelligence and benchmarking renewal options
• Strengths: helps compare pricing and terms against market trends
• Limits: more data/analytics than direct quote comparison

7) Broker-developer portals with comparison dashboards

Some brokers offer:

• renewal comparison tables
• quote-to-bound dashboards
• embedded document management
• term sheet comparison

These can be among the best “free” options if you already work through that broker.

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Best practical choices by use case

If you want actual quote comparison and placement

• PPL
• Major broker portals like Gallagher/Aon/Marsh/BMS equivalents
• Market-specific reinsurance exchange portals

If you want renewal benchmarking and option analysis

• RTI / market data platforms
• Broker analytics dashboards
• Broker portal renewal comparison tools

If you want the broadest market access

• A top-tier global broker platform
• London market digital placement tools
• Carrier-connected specialty exchanges

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What to watch for

A platform is only good if it supports:

• side-by-side comparison of limits, layers, and pricing
• term-by-term wording comparison
• version control for multiple quotes
• renewal workflow and deadline tracking
• carrier response logging
• exportable summary reports

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Bottom line

There are few truly free public reinsurance comparison platforms. The most useful “free” options are usually:

1. PPL / London market digital placement tools
2. Major broker portals
3. Reinsurance workflow and benchmarking systems

If you want, I can also give you:

• a ranked shortlist by region (US / London / Bermuda / Asia)
• the best platforms for treaty vs facultative
• or a comparison table of features, pricing, and access model.