Self-hosted apps that integrate with Google Contacts

5 open-source, self-hostable projects list Google Contacts as an integration.

• EspoCRMA self-hosted, open-source CRM to manage contacts, sales, support, and marketing with a clean UI and REST API.
• NametagNametag is a self-hosted, open-source personal relationship manager for tracking contacts, visualizing connections, and syncing with CardDAV.
• MachinaOSSelf-hosted open-source AI organisation with six specialised employees owning business functions end-to-end. Token budget, bring your own model keys.
• PingCRMOpen-source personal CRM syncing Gmail, Telegram, Twitter/X, LinkedIn, WhatsApp into unified timelines with 0–10 scoring and Claude AI follow-up drafts — self-hostable.
• sutandoSutando is a self-hosted, open-source AI agent for macOS using Claude Code or Codex CLI. Handles voice, calls, meetings, screen interaction, and self-improvement locally.