Turnstone
Turnstone is a local-first desktop platform that lets knowledge workers run a team of AI agents on the AI subscriptions they already pay for, including ChatGPT, Claude, Gemini, and Grok. The app builds a persistent, locally stored memory from connected apps like Gmail and Notion, so agents share context and learn user preferences across tasks. It runs entirely on the user's Mac with no Turnstone cloud copy of their data.
- AI Agents
- Artificial Intelligence
- Enterprise Software
- Software Only
Funding
Raised to date
$500KRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Founder details are not available yet.
Product
Problem
Knowledge workers frequently switch between multiple AI models and applications, forcing them to repeatedly re-upload context, hunt through emails and files, and start conversations from scratch. This fragmented workflow wastes time, increases cognitive load, and risks losing important details across sessions. Additionally, many AI tools store user data in company clouds, raising privacy concerns for sensitive business information.
Solution
Turnstone is a local-first desktop platform that enables users to do all their work with AI across every model and app while keeping everything on their machine. The application continuously ingests local folders, browser activity, Gmail, Google Drive, Notion, iMessage, and other connected sources into a unified, persistent brain. Each of several specialized agents—covering email, projects, research, and personal tasks—shares this common brain, so knowledge gained in one context automatically improves performance in others. Users can invoke any AI model they already subscribe to, with Turnstone providing the orchestration layer and memory system at no additional cost. The platform works entirely on the user's Mac, storing all knowledge locally with no cloud copy maintained by Turnstone.
Target Audience
Primary users are knowledge workers, startup operators, and business professionals who work with multiple AI tools and need persistent context, privacy, and efficiency across their daily workflows.
Features
- Local-first architecture that stores all memory and context on the user's machine in ~/Library/Turnstone with no Turnstone cloud copy
- Unified brain shared across multiple specialized agents, enabling cross-context learning that makes each agent smarter over time
- Continuous ingestion from local folders, Gmail, Granola, browser history, Google Drive, Notion, and iMessage to keep agents current
- Model-agnostic integration that leverages existing AI subscriptions, including ChatGPT, Claude, Gemini, Grok, OpenRouter, and locally run models via Ollama
- Agent-driven task execution that breaks work into visible multi-step workflows, such as drafting emails with retrieved context and follow-up items
- Each agent has its own browser tab in the Turnstone Browser for opening sites, reading them, and filling in forms
- Schedule feature that lets agents run recurring tasks at specified times and report back in chat
- Ready-made agent teams for Sales, Marketing, Content Creation, Finance, and Fundraising, each with pre-configured agents, app connections, and sync frequencies
- Pebbles onboarding agent that reads user context and suggests the team of agents needed, then helps build and run it