You agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. See Cookie Policy
Book a demo
30 minutes

Find your

fund returners

Thank you! Your submission has been received,
please wait while we redirect you.
Oops! Something went wrong while submitting the form.
Trusted by 1000+ investors every day
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrex
BrexBrexBrex
BrexBrex
Brex
Brex
Brex
Brex
Brex
Brex
Brex
Brex
Brex
Brex
Brex
Harmonic is the source of truth for startups

Discover companies 6-12 months ahead of the competition, research them in minutes instead of hours, and move with conviction.

Proprietary data on millions of startups and their founders, with AI that automates your investment workflows from discovery to decision.

Meet Scout
The AI agent made for investors
Learn more
Alert me when someone leaves #TopAI-Labs and starts something in stealth.
Scouts that run on your schedule
Describe the job once. Your Scouts do the work and tell you when there’s something worth your attention.
Portfolio momentum breakouts
Weekly on Fridays
Stealth founder triage
Mondays at 8 AM
Exit & M&A scanner
First Monday every month
Hiring & talent tracker
Daily at 8 AM
New funding sweep
Mondays at 8 AM
Leadership change watch
Every other Tuesday

“We found 4 out of our last 9 deals on Harmonic”

– Tier 1 VC

Discover deals before the competition

Get notified at company formation or when they meet your thesis

Find the best founders first

Get notified when top founders go stealth, switch roles, or start something new

Enhance your entire investment workflow

Map and monitor your team’s network
Track connections, movements and communications, making every intro warm
Organize sourcing and win deals on Harmonic
Manage your top-of-funnel with custom fields or enrich your CRM with our API
Instant insights from the Harmonic Chrome Extension
Download Extension

Agent-ready

Live data on companies, founders, investors, and how your team is connected to them, without leaving your workflow.

Purpose-built MCP
Harmonic intelligence in every conversation with your AI
Not coding? No worries
Zapier and n8n bots can keep your workflow up to date with the latest data from the source of truth about startups
Bulk data for optimal flexibility
The complete startup database delivered directly to your data warehouse or cloud
Harmonic API
Always up to date, always production ready and tailored to your integration
Read the Docs

Visionary investors run on Harmonic

“Harmonic instantly turned Floodgate into a data-driven firm. Its automated tools have become fundamental to our sourcing and networking efforts.”
Floodgate
Mike Maples
Co-founding Partner at Floodgate
“The Harmonic platform has decisively enhanced my productivity.”
Teamworthy
Brian Cashin
VP at Teamworthy
“If we lost Harmonic it would be a 9/10 bad day”
Anonymous
Anonymous
From a Top 3 VC Firm
“…Harmonic’s Chrome extension has become my default tool when coming across a new business”
Ben Kany
Principal at Bedrock
“They have the best data, the easiest-to-use API, and they’re working on a number of capabilities that will soon replace many of the other systems we’re using”
Fin Capital
Fan Wen
Investor at Fin Capital
“Harmonic uncovers the earliest-stage companies from a variety of data sources well before other providers do”
Ridge Ventures
Zain Rizavi
Principal at Ridge Ventures