Community Data vs Harmonic

Community Data is a free, open database of more than 1 million people and companies, initially focused on the startup ecosystem. Its records are collaboratively maintained in an open-source repository as JSON documents that follow JSON Schema definitions. Schemas cover people, companies, locations, sectors, funding stages, and curated collections. A public GraphQL API lets developers query the data and build applications.

Anyone can contribute by creating or editing a JSON file. Commits are checked against the matching schema, and invalid documents cause a commit to be rejected. A proof-of-concept Next.js editor uses the GitHub API and requires contributors to authenticate with GitHub. Enhancer scripts can use public APIs or websites to structure information for the schemas and import it. Verified document owners are recorded by GitHub username, and their pull requests are automatically merged without review. Schema changes are proposed by pull request and reviewed by core contributors during monthly governance calls. The project uses the MIT License, copyright 2025.

Harmonic is a startup intelligence database for following companies and people as they grow, hire, raise funds, launch products, or change direction. Its Console and Bulk Data offerings list 40 million companies, 200 million people, and 250 thousand investors. Harmonic says it combines legal filings with dozens of public sources and refreshes the information regularly. Scout lets users ask questions about startups or schedule AI agents to find, evaluate, and monitor companies, people, deals, and markets. Network Mapping connects LinkedIn relationships, email and calendar events, and CRM engagements with companies and operators in the database. The maker positions Harmonic for venture capital, growth capital, corporate innovation, and go-to-market prospect discovery. It offers REST and GraphQL APIs, MCP connectivity, and bulk delivery through S3, BigQuery, or Snowflake. Integrations include Slack alerts, Google accounts, Affinity, LinkedIn connections, Polytomic, and Zapier. Console, API, and Bulk Data prices are available on request. Scout includes up to $750 of credits per user each month, and the Scout API has a $250 free credit allowance.