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Guidewire PolicyCenter vs One Inc — Policy administration for US insurance, 2026.

Guidewire PolicyCenter (58 named carriers) and One Inc (16 named carriers) both sit at the policy administration layer. 2 carriers appear on both rosters.

Last verified 2026-04-22 · methodology

TL;DR

  • Guidewire PolicyCenter has 58 publicly-named carrier deployments; One Inc has 16. Both at the policy administration layer.
  • 2 carriers run both: Mountain West Farm Bureau, Columbia Insurance Group.
  • Both classified modern on Phidea's generation axis.
  • Ownership contrast: Guidewire PolicyCenter is public (NYSE: GWRE); One Inc is PE-owned (Great Hill Partners (with Nordic Capital co-investor since 2024)).
  • Analyst coverage: 0 firms cover both, 1 only Guidewire PolicyCenter, 1 only One Inc.

Customer overlap

BucketCount
Named on Guidewire PolicyCenter only56
Named on One Inc only14
Named on both2
of which US-named on at least one side2

Overlap roster

Only on Guidewire PolicyCenter

  • USAA (US)
  • The Hartford (US)
  • Chubb USA (US)
  • Aviva (UK)
  • QBE Insurance (AU)
  • Texas Farm Bureau (US)
  • Donegal Insurance Group (US)
  • Brotherhood Mutual Insurance Company (US)
  • AXA XL (US)
  • EMC Insurance (US)
  • Heritage Insurance (US)
  • Federated Mutual Insurance Company (US)
  • …and 44 more on the vendor card.

Only on One Inc

  • Arbella Insurance Group (US)
  • GoAuto Insurance (US)
  • Mutual Benefit Group (US)
  • The Philadelphia Contributionship (US)
  • MAPFRE Insurance (US)
  • Penn National Insurance (US)
  • Virginia Farm Bureau Insurance (US)
  • Brethren Mutual (US)
  • Grange Insurance (US)
  • National Indemnity Company (US)
  • North American Risk Services (US)
  • Pearl Holding Group (US)
  • …and 2 more on the vendor card.

Counts derived from 74sourced carrier-deployment entries across both vendor cards. Aggregate-only statements (e.g. “16 of the top 20”) excluded.

Stack position

Guidewire PolicyCenter
Generation
modern
Stack layer
Policy administration
Founded
2001
Lines
auto, home, commercial, workers-comp, specialty
Replaces
mainframe pas
One Inc
Generation
modern
Stack layer
Policy administration
Founded
2012
Lines
auto, home, commercial, life
Replaces
paper check disbursement, generic payment gateway

Ownership and corporate context

Guidewire PolicyCenter
Type
public
Parent
Guidewire Software, Inc.
Ticker
NYSE: GWRE
One Inc
Type
private-equity
Parent
Great Hill Partners (with Nordic Capital co-investor since 2024)
Acquired
2020

Source: One Inc

Carrier-segment specialization

Guidewire PolicyCenter — geographic split

  • US
    56
  • UK
    1
  • AU
    1

One Inc — geographic split

  • US
    16

Analyst coverage differential

Only Guidewire PolicyCenter cited by
  • Wikipedia / Guidewire Software (2024: Guidewire Software — company overview)
Only One Inc cited by
  • Celent (2025: Behind the Wheel of Trust: How Auto Claims Shape Customer Loyalty (One Inc ClaimsPay commissioned Celent research))

Recent news (last 12 months)

No news items in the last 12 months for either tool.

Sourced limitations

Guidewire PolicyCenter

No publicly-sourced limitations recorded on the vendor card yet.

One Inc
  • One Inc is a US-only insurance payments network; there is no documented European or UK carrier footprint, and pricing/terms are not publicly disclosed — carriers procure via direct sales rather than self-serve onboarding that generalist processors (Stripe, Adyen) offer.
    Source: One Inc
  • The platform depends heavily on banking and wallet partners (J.P. Morgan Payments, U.S. Bank, PayPal/Venmo, Apple Pay, Google Pay) for rails; carriers adopting One Inc inherit this dependency stack rather than running direct processor relationships.
    Source: Business Wire

Limitations published on Phidea are sourced to the underlying citation and reflect what is publicly named — not an exhaustive list. Consult the vendor card for the full record.

Frequently asked

Do any carriers run both Guidewire PolicyCenter and One Inc?
Yes — 2 carriers appear on both rosters: Mountain West Farm Bureau, Columbia Insurance Group. Sourced on each vendor card; see the customer-overlap section for primary URLs.
Who owns Guidewire PolicyCenter and One Inc?
Guidewire PolicyCenter is public (NYSE: GWRE). One Inc is PE-owned (Great Hill Partners (with Nordic Capital co-investor since 2024)).
Which has more named US carriers?
Guidewire PolicyCenter has the larger publicly-named US roster: Guidewire PolicyCenter 56, One Inc 16. Public-roster size is a coverage signal, not a quality signal — vendors with stronger NDAs may have larger actual US footprints than the public count shows.
Where are these tools positioned in the insurance stack?
Both sit at the policy administration layer. Guidewire PolicyCenter replaces mainframe pas; One Inc replaces paper check disbursement, generic payment gateway.

Adjacent reading