#1
Clay

Clay

★★★★★ 4.6 Free / $149+ Free plan

Data enrichment and outreach platform combining 75+ data providers with AI-powered research to build targeted prospect lists and personalize outbound at scale.

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✓ Aggregates 75+ data sources in one waterfall enrichment✓ AI research agent writes personalized outreach copy✓ Flexible spreadsheet-like interface for data manipulation
#2
Mixpanel

Mixpanel

★★★★★ 4.5 Free / $28+ Free plan

Product analytics platform for tracking user behavior, funnels, retention, and feature adoption.

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✓ Powerful event-based analytics✓ Excellent funnel and retention analysis✓ Self-serve — no SQL needed
#3

Clay

★★★★★ 4.5 Free / $149+ Free plan

Data enrichment and outbound automation platform that combines 75+ data sources with AI messaging to build targeted prospect lists at scale.

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✓ 75+ data enrichment sources✓ AI message personalization✓ Powerful waterfall enrichment
#4
Amplitude

Amplitude

★★★★ 4.4 Free / $49+ Free plan

Digital analytics platform for understanding user behavior with event tracking, cohort analysis, and experimentation.

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✓ Powerful behavioral cohort analysis✓ Free tier generous (50K monthly tracked users)✓ Built-in experimentation (A/B testing)
#5
Apollo.io

Apollo.io

★★★★ 4.4 Free / $49+ Free plan

Sales intelligence and engagement platform with 275M+ contact database.

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✓ Huge contact database✓ Good free tier✓ Sequences included
#6

Apollo.io

★★★★ 4.4 Free / $59+ Free plan

Sales intelligence and engagement platform with a database of 275M+ contacts, email sequences, and CRM for prospecting and outreach.

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✓ Massive contact database✓ Good free plan✓ All-in-one prospecting tool
#7

June

★★★★ 4.4 Free / $149+ Free plan

Product analytics platform built for B2B SaaS companies that auto-generates insights about user activation, retention, and feature adoption.

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✓ Auto-generated reports✓ Built for B2B SaaS✓ Company-level analytics
#8

Customer.io

★★★★ 4.4 $100+

Automated messaging platform for tech-savvy marketers offering email, push, SMS, and in-app messages triggered by behavioral data and events.

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✓ Powerful event-driven automation✓ Good segmentation✓ Multi-channel messaging
#9
Clearbit

Clearbit

★★★★ 4.3 Free Free plan

B2B data enrichment and intelligence platform (now part of HubSpot) providing real-time company and contact data for lead scoring, routing, and personalization.

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✓ Real-time enrichment with 100+ data attributes✓ Excellent API for programmatic data access✓ Free weekly visitor reports for any website
#10

Heap

★★★★ 4.3 Free Free plan

Digital insights platform that automatically captures every user interaction without manual tracking code, enabling retroactive analytics and journey mapping.

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✓ Auto-capture all events✓ No code required for tracking✓ Retroactive analysis possible
#11

Sprig

★★★★ 4.3 Free Free plan

Product experience platform for in-product surveys, session replays, and AI analysis to understand why users behave the way they do.

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✓ In-context user research✓ AI-powered analysis✓ Good targeting options
#12
Copy.ai

Copy.ai

★★★★ 4.2 Free / $49+ Free plan

AI-powered GTM platform for automating sales copy, outreach emails, and marketing workflows.

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✓ Powerful workflow automation for GTM teams✓ Great for sales email sequences✓ Free tier with 2000 words/month
#13

Rows

★★★★ 4.2 Free / $59+ Free plan

Spreadsheet with built-in integrations to databases, APIs, and 50+ data sources.

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✓ Built-in data integrations✓ Modern clean interface✓ Powerful AI features

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