Honest comparisons against the rest of the market.
If you're evaluating mortgage pricing engines, you should be looking at multiple. We've written structured comparisons for the most common alternatives. They're honest, including where competitors do something better.
RateStack vs. Optimal Blue
Long-established mortgage pricing and secondary marketing platform with a large installed base across retail, wholesale, and correspondent channels. Now part of Constellation Software / Perseus following the 2023 spin-off from Black Knight.
Read the comparisonRateStack vs. Polly
Newer, venture-funded mortgage pricing engine focused on lender configurability and modern tooling, founded in 2019.
Read the comparisonRateStack vs. Lender Price
Cloud-based product and pricing engine with broad LOS integrations, established mid-2010s.
Read the comparisonRateStack vs. ICE Mortgage Pricing
Pricing capabilities within ICE Mortgage Technology, the parent of Encompass and the broader ICE mortgage stack following the 2023 acquisition of Black Knight.
Read the comparisonRateStack vs. Mortech
Pricing engine and rate tools owned by Zillow Group, with a broker- and retail-LO focus and tight integration to Zillow's lender marketplaces.
Read the comparison
How we write these
Every comparison page is written by the RateStack team and reviewed before publication. We use competitor names and product names descriptively for comparison and interoperability discussion — nominative fair use under U.S. trademark law. We do not imply endorsement.
Where a competitor has a feature we lack or does something better, we say so. Where we'd genuinely point a buyer elsewhere, the page's "when {competitor} is the better choice" section is the reason. Selling against a real product means knowing where it's genuinely strong.
Where we don't know a specific — because the spec isn't public, because it's configurable per environment, or because the product changed — we mark cells "Depends" or "Unknown" and direct readers to verify with the vendor. If you spot an inaccuracy, email editorial@ratestack.com and we'll correct it; corrections show up on /corrections.
What we don't do
- Disparage competitors.
- Misquote pricing or features.
- Cite review counts we haven't verified.
- Hide where we're weaker.
For category-level overviews, see /category/mortgage-pricing-engine. For the full evaluation framework we hand prospects, see /resources/rfp-template.