OpenFunnel

OpenFunnel provides headless primitives for go-to-market engineering, enabling teams to build custom GTM workflows. It solves the problem of manual lead generation, account research, and CRM maintenance by offering APIs for tasks like lookalike search, tech-stack search, and hiring signal detection. The target audience includes developers, operations teams, and B2B companies, particularly those building AI agents for sales and marketing. It is positioned as a developer-focused infrastructure API with a free tier and enterprise plans, allowing integration into existing systems.

Key features

• Lookalike search for closed-won accounts
• TAM builder from ICP definition
• Tech-stack search by tools and vendors
• Deep-research and qualify accounts
• Hiring initiatives source from job posts
• Hiring trends across multiple job posts
• People hired and moved tracking
• Social signals from LinkedIn and X
• LinkedIn engagement sourcing
• CRM account sync with deduplication
• CRM contact sync