Happenstance searches the people you know. Connect Gmail, Outlook, Google Calendar, Google Contacts, LinkedIn, Twitter and Instagram, and every person across those accounts becomes one record that shows how well you know them and which account the tie came from. You then ask for what you want in plain English. “Who can introduce me to someone at Stripe?” “Which investors in my network back devtools?” “People I used to email often but lost touch with.” Results come back ranked by relationship strength with the reason each person matched and the path in.
It's built for teams as much as individuals, through groups. Every member's accounts pool into one network that any member can search, sharing is mutual, and groups are free and unlimited. The largest groups make 380,000+ people searchable for their members. 500,000+ people use Happenstance.
It's free in a way the alternatives are not. Happenstance is free. The free plan is the whole product, with usage limits on chat and web searches beyond your network. Pro raises the limits: unlimited web searches and results, higher chat limits, and CSV export. Pro is $30 a month, or $24 billed yearly. None of the seven offers its whole product free; most have no free tier at all.
It reaches beyond your accounts in two ways. Profiles are enriched from external providers, so a person you emailed twice in 2022 still shows a current title and company. And web search finds people outside your network when nobody you know fits. Every path it ranks comes from an interaction that happened; Village and The Swarm are the tools that infer ties from shared employers and schools instead.
It is built to be used from other tools. There is a public API, an MCP server that works with Claude and ChatGPT, a ChatGPT app, Claude and Claude Code integrations and a CLI, documented on the developers page. Email is read as headers only, never content or attachments, and the product is SOC 2 compliant with DTI Trust Level 2.