By Kushal Magar · March 11, 2026 · 8 min read · Last updated: September 28, 2026
Best Full Contact Alternatives for Identity Resolution in 2026
Full Contact built its reputation on identity resolution, but alternatives now offer broader enrichment alongside identity matching. Here are the platforms worth evaluating.
Full Contact (FullContact) specializes in identity resolution -- matching fragmented identifiers like email, phone, and device ID to build unified profiles. But in 2026, many teams need more than identity matching; they need full CRM data enrichment, workflow automation, and CRM integration.
We compared five Full Contact alternatives that offer identity resolution alongside deeper enrichment and automation capabilities. Here are the best options in 2026.
Quick Summary
Five Full Contact alternatives are compared on identity resolution, enrichment depth, and CRM integration. SyncGTM is the best option for teams that need waterfall enrichment with built-in identity matching across 50+ providers, while People Data Labs offers the most comprehensive identity graph via API.
TL;DR
- SyncGTM ($49/mo) -- Best for waterfall enrichment with built-in identity matching across 50+ providers
- Clearbit (HubSpot) -- Best for real-time company identity resolution within HubSpot
- Explorium.ai (free trial, then from $29.99/pkg) -- Best for B2B company and prospect matching with enrichment from 100+ data sources
- Apollo.io ($49/mo) -- Best budget alternative with contact matching and outreach
- People Data Labs ($0.01/record) -- Best API-first identity resolution at scale
What We Evaluated
- Identity resolution -- multi-identifier matching, deduplication, profile unification
- Enrichment depth -- data appended beyond identity matching
- Real-time capability -- speed of identity resolution and enrichment
- Integration -- CRM sync, API quality, workflow triggers
- Pricing -- cost compared to Full Contact for similar capabilities
1. SyncGTM — Waterfall data enrichment with the highest coverage across 50+ providers
SyncGTM — Waterfall data enrichment with the highest coverage across 50+ providers
SyncGTM handles identity resolution as part of its waterfall enrichment process. By querying 50+ providers for each record, it naturally resolves identities by cross-referencing email, phone, company, and social data across multiple sources.
Unlike Full Contact narrow focus on identity, SyncGTM extends into full enrichment, workflow automation, and CRM sync -- making it a more complete solution for most B2B teams.
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 identity resolution -- matching IP addresses, domains, and email patterns to company profiles. Its Reveal feature identifies anonymous website visitors by company.
For company-level identity resolution within HubSpot, Clearbit is the natural Full Contact replacement.
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 resolves companies and prospects before it enriches them. Its AgentSource API matches an input record to one of 146M+ business entities or 767M+ professional profiles, then appends firmographics, contact details, social presence, and professional history. Explorium reports 97.8%+ company match accuracy.
For B2B teams, that covers the company and contact matching most Full Contact users need, with 4,000+ business signals on top. It is built for B2B data, so teams with consumer cross-device matching needs should keep a dedicated identity vendor.
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. 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+ contact database. Given an email or LinkedIn URL, Apollo matches and enriches the full contact profile including company data, job title, and social profiles.
Not a dedicated identity tool, but for basic contact matching plus outreach, Apollo delivers strong value.
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.
5. 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+ person records. It matches across email, phone, social profiles, and employment history -- the closest equivalent to Full Contact identity resolution capabilities.
For developer teams building custom identity resolution pipelines, PDL API quality and pricing ($0.01/record) are unmatched.
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.
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 |
| 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 |
| 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 |
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
- Apollo.io if you need all-in-one prospecting, enrichment, and outreach on a budget
- People Data Labs if you need developer teams building custom enrichment pipelines via API
