FullContact Alternatives
Identity Resolution · 8 compared · Updated
Looking to replace FullContact? These are the 8 closest Identity Resolution alternatives we track, ranked by reviewed capability overlap — the closest matches come first.
- Closest match
- Hightouch
- Direct replacements
- 8 compared
- Pricing
- Usage-based · Enterprise · Custom
No referral fees. Ordering is by reviewed capability overlap, not who paid us.
What FullContact is, in short
Real-time identity resolution API that unifies personal and professional identifiers into privacy-safe person profiles. [Sub-100ms resolution API; common embedded identity layer inside other martech products.]
FullContact alternatives compared
Ranked by reviewed relationship first — a tool we've confirmed as a direct replacement outranks one that merely shares capabilities. Tools we've reviewed as complements to FullContact are excluded, because running both is not the same as replacing it.
Scroll the table sideways for switching effort and pricing →
| Vendor | Shared capabilities with FullContact | Switching effort | Pricing | Also strong in | Compare |
|---|---|---|---|---|---|
 Hightouch
Partner
19 core capabilities | Audience Segmentation Data Enrichment Data Unification / Profile Stitching +2 more | — | Usage-based | Reverse ETL Journey Orchestration | About Hightouch |
 Acxiom 3 core capabilities | Audience Segmentation Data Enrichment First-party Data Onboarding +1 more | — | Enterprise | — | About Acxiom |
 Amperity 16 core capabilities | Audience Segmentation Data Enrichment Data Unification / Profile Stitching +2 more | — | Custom | Predictive Scoring / Propensity Audience Activation / Sync | About Amperity |
 Aqfer 10 core capabilities | Audience Segmentation Cross-device Matching Data Enrichment +2 more | — | Enterprise | Event Routing Composable / Warehouse-native CDP | About Aqfer |
 Audience Acuity 8 core capabilities | Audience Segmentation Data Enrichment Data Unification / Profile Stitching +2 more | — | — | Ad Targeting / Retargeting Audience Activation / Sync | About Audience Acuity |
 Celebrus 6 core capabilities | Audience Segmentation Cross-device Matching Data Enrichment +2 more | — | Enterprise_quote | Event Routing Visitor Identification | About Celebrus |
 Customers.ai 10 core capabilities | Audience Segmentation Data Enrichment Data Unification / Profile Stitching +1 more | — | — | Audience Activation / Sync Visitor Identification | About Customers.ai |
 Experian Marketing Services 10 core capabilities | Audience Segmentation Cross-device Matching Data Enrichment +3 more | — | — | Audience Activation / Sync Ad Targeting / Retargeting | About Experian Marketing Services |
What to look for in a FullContact alternative
FullContact’s core capabilities — check each alternative for coverage of these before shortlisting:
- Identity Resolution / ID Graph
- Data Enrichment
- Audience Segmentation
- Data Unification / Profile Stitching
FullContact alternatives — FAQ
What is the best alternative to FullContact?
Hightouch is the closest match among the 8 Identity Resolution alternatives we track. The two records share 5 core capabilities (Audience Segmentation, Data Enrichment). The right choice depends on your existing stack — compare all 8 in the table above.
What should I look for in a FullContact alternative?
FullContact’s core strengths are Identity Resolution / ID Graph, Data Enrichment, Audience Segmentation. Prioritise alternatives that cover the capabilities you actually use, and that integrate cleanly with the rest of your stack — a replacement that doesn’t connect to your warehouse, CDP, or activation tools isn’t really a replacement.
How much do FullContact alternatives cost?
Pricing varies — alternatives here range across Usage-based, Enterprise, Custom, Enterprise_quote. Check each vendor’s page for current rates.
Can I compare FullContact and Hightouch side by side?
Yes. Drop both onto a canvas in Martech Stack Builder and see how each integrates with your warehouse, CDP, and activation tools — then score them against your actual requirements before deciding.
Compare the rest of the field
Evaluating more than one? These follow the reviewed substitute graph rather than the category shelf, so they cross categories where the tools genuinely compete.
Before you replace FullContact, check what you already own
Teams usually find the overlap is not where they expected. Name the tools you run and the Instant Stack Audit maps which ones duplicate capability — inside Identity Resolution and across the rest of the stack.
Takes about two minutes. Your overlaps and a savings estimate are free — no sign-up. An email address unlocks the costed roadmap.
Browse all Identity Resolution vendors
Stack Builder’s Identity Resolution page compares every vendor we track in this category, with capabilities, pricing, and a head-to-head for the closest pairs.
View all Identity Resolution vendors →Evaluating FullContact alternatives? Do it in your stack’s context.
Drop FullContact and the alternatives onto a canvas, see how they integrate with what you already have, and score them against your actual requirements — not a generic feature list.
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