By Kushal Magar · March 11, 2026 · 8 min read · Last updated: September 28, 2026
Best FullContact Alternatives for Identity Resolution in 2026
FullContact specializes in identity resolution, but alternatives deliver broader enrichment and better automation alongside identity matching. Here are the top options.
FullContact has long been the go-to for identity resolution -- matching emails, phones, and social profiles to unified person records. But in 2026, most B2B teams need more than identity matching; they need full data enrichment, workflow automation, and CRM integration.
We compared five FullContact alternatives that provide identity resolution alongside deeper enrichment and automation capabilities. Here are the best options in 2026.
Quick Summary
Five FullContact alternatives are compared on identity resolution, enrichment depth, API quality, and CRM integration. SyncGTM delivers identity matching as part of its waterfall enrichment across 50+ providers, while People Data Labs offers the most comprehensive identity graph via API at $0.01/record.
TL;DR
- SyncGTM ($49/mo) -- Best for waterfall enrichment with identity matching across 50+ providers
- Clearbit (HubSpot) -- Best for company identity resolution within HubSpot
- Explorium.ai (free trial, then from $29.99/pkg) -- Best for B2B company and prospect matching with enrichment and business signals
- People Data Labs ($0.01/record) -- Best API-first identity graph at scale
- Apollo.io ($49/mo) -- Best budget alternative with contact matching and outreach
What We Evaluated
- Identity resolution -- multi-identifier matching, deduplication accuracy
- Enrichment depth -- data appended beyond identity matching
- API quality -- latency, documentation, reliability
- CRM integration -- native sync, deduplication triggers
- Pricing -- cost compared to FullContact
1. SyncGTM — Waterfall data enrichment with the highest coverage across 50+ providers
SyncGTM — Waterfall data enrichment with the highest coverage across 50+ providers
SyncGTM resolves identities as part of its waterfall enrichment process. By querying 50+ providers for each record, it cross-references data points to match and unify profiles -- delivering identity resolution alongside full enrichment.
The workflow builder adds automation that FullContact lacks -- scoring, routing, and CRM sync in multi-step pipelines. AI research agents gather additional identity signals from the open web.
Pros
- +Waterfall enrichment across 50+ data providers in one workflow
- +AI web scraper and research agents for custom data
- +Native CRM integrations (HubSpot, Salesforce, Pipedrive, Attio, Zoho)
- +Workflow builder with drag-and-drop automation
- +Free tier available with no feature gates
Cons
- −Newer platform -- smaller community than established players
- −Advanced workflows have a learning curve
Best for: Waterfall data enrichment with the highest coverage across 50+ providers
Pricing: Free tier available. Solo $49/mo. Growth $99/mo. Pro $249/mo. Business $649/mo.
2. Clearbit — HubSpot-native enrichment with real-time company and contact data
Clearbit — HubSpot-native enrichment with real-time company and contact data
Clearbit (HubSpot Breeze Intelligence) excels at company-level identity resolution -- matching IP addresses, domains, and email patterns to company profiles. The Reveal feature identifies anonymous website visitors by company identity.
For company-level identity resolution within HubSpot, Clearbit is the strongest FullContact alternative.
Pros
- +Native HubSpot integration (Breeze Intelligence)
- +Real-time enrichment on form submissions
- +Strong company/firmographic data
- +IP-to-company reveal for website visitors
Cons
- −Now requires HubSpot -- less useful for other CRMs
- −Contact email coverage lower than competitors
- −Pricing based on HubSpot tier
- −Limited phone number data
Best for: HubSpot-native enrichment with real-time company and contact data
Pricing: Included with HubSpot Marketing Hub Professional+. Standalone pricing varies.
3. Explorium.ai — Company and contact enrichment with business signals from 100+ data sources
Explorium.ai — Company and contact enrichment with business signals from 100+ data sources
Explorium.ai matches incoming records to 146M+ business entities and 767M+ professional profiles through its AgentSource API, then enriches them with contact details, social presence, professional history, and firmographics. Explorium reports 97.8%+ company match accuracy, and bulk requests handle up to 50 records at a time.
On top of matching, it adds business context: 4,000+ signals like job changes and funding rounds. It is a B2B dataset, so consumer identity and cross-device matching stay out of scope.
Pros
- +146M+ companies and 767M+ professional profiles from 100+ data sources
- +4,000+ data signals covering funding, hiring, tech stack, and intent
- +AgentSource API and hosted MCP server built for AI agents
- +Vibe Prospecting lets non-technical users search and enrich in plain English
- +Credit packages from $29.99 with no per-seat fees and a 100-credit free trial
Cons
- −No built-in email sequencing or dialer; pair it with an engagement tool
- −Enrichments cost 1-5 credits each and package credits expire after 12 months
- −Deepest workflows assume API or MCP access, or a data team
Best for: Company and contact enrichment with business signals from 100+ data sources
Pricing: Free trial: 100 credits. Lite $29.99/pkg (500 credits). Starter $149.99/pkg (5K credits). Growth $749.99/pkg (30K credits). Scale $7,499.99/pkg (500K credits). Enterprise: custom.
4. People Data Labs — Developer teams building custom enrichment pipelines via API
People Data Labs — Developer teams building custom enrichment pipelines via API
People Data Labs offers the most comprehensive identity graph via API with 1.5B+ records. Multi-identifier matching across email, phone, social profiles, and employment history makes it the closest equivalent to FullContact core capabilities.
For developer teams building custom identity pipelines, PDL API and $0.01/record pricing are the best option.
Pros
- +1.5B+ person records via API
- +Pay-per-record pricing ($0.01/record)
- +Developer-friendly REST API
- +Bulk enrichment support
Cons
- −API-only -- no UI for non-technical users
- −No prospecting or outreach features
- −Requires development resources to integrate
- −Data quality varies by region
Best for: Developer teams building custom enrichment pipelines via API
Pricing: Pay-per-record starting at $0.01/record. Volume discounts available.
5. Apollo.io — All-in-one prospecting, enrichment, and outreach on a budget
Apollo.io — All-in-one prospecting, enrichment, and outreach on a budget
Apollo provides basic identity matching through its 275M+ database. Given an email or LinkedIn URL, it matches and enriches the full profile. Not a dedicated identity tool, but it covers basic matching plus outreach.
The free tier makes it the most accessible option for basic identity needs.
Pros
- +275M+ contact database with email sequences
- +Free tier with 10,000 credits
- +Built-in intent data and scoring
- +CRM integrations (Salesforce, HubSpot, Pipedrive)
Cons
- −Email accuracy below 80% on many segments
- −Credit limits throttle high-volume workflows
- −Data quality inconsistent for niche industries
- −Outreach features basic compared to dedicated tools
Best for: All-in-one prospecting, enrichment, and outreach on a budget
Pricing: Free (10k credits). Basic $49/mo. Professional $79/mo. Organization $119/mo.
Comparison Table
| Tool | Best For | Free Tier | Starting Price | Standout Feature |
|---|---|---|---|---|
| SyncGTM | Waterfall data enrichment with the highest coverage across 50+ providers | Yes | $49/mo | 50+ provider waterfall enrichment with AI research agents |
| Clearbit | HubSpot-native enrichment with real-time company and contact data | No | Varies | Real-time visitor reveal and form enrichment native to HubSpot |
| Explorium.ai | Company and contact enrichment with business signals from 100+ data sources | Yes (100 credits) | $29.99/pkg | 146M+ companies, 767M+ profiles, and 4,000+ signals in one credit pool |
| People Data Labs | Developer teams building custom enrichment pipelines via API | Yes (1,000 free records) | $0.01/record | API-first enrichment at $0.01/record with 1.5B+ person records |
| Apollo.io | All-in-one prospecting, enrichment, and outreach on a budget | Yes | $49/mo | 275M+ contacts with built-in email sequences and free tier |
How to Choose
- SyncGTM if you need waterfall data enrichment with the highest coverage across 50+ providers
- Clearbit if you need hubSpot-native enrichment with real-time company and contact data
- Explorium.ai if you need company and contact enrichment with business signals from 100+ data sources
- People Data Labs if you need developer teams building custom enrichment pipelines via API
- Apollo.io if you need all-in-one prospecting, enrichment, and outreach on a budget
