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Zed

High-performance, multiplayer code editor; open source, AI optional

Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter. Its site promotes Delta, a multiplayer environment for coding with agents powered by DeltaDB. It also promotes the Agent Client Protocol, which aims to 'connect any client to any agent'. Mistral's Vibe page lists Zed as a host for its coding agent via ACP.

People

Official YouTube channel

Cursor & IDE agents · Talks & interviews · Multi-agent orchestration

Co-founder

Cursor & IDE agents · Open harnesses

In research (1)

Featured

Devin, the AI software engineer, and the Windsurf IDE.

Cognition builds Devin, an autonomous AI software engineer that plans and executes engineering tasks end-to-end, and acquired the Windsurf agentic IDE in 2025. One of the defining startups of the coding-agent wave.

~$10.2B valuation (Sep 2025)

3 pros · 4 cons

The integration layer: hundreds of managed tools your agents can call.

Composio handles auth, schemas, observability and reliability for the external SaaS tools an agent uses — 'plumbing for agentic actions' across Slack, GitHub, Salesforce and 250+ other surfaces.

4 pros · 4 cons

A registry and toolchain for MCP servers.

Smithery indexes and helps deploy MCP (Model Context Protocol) servers — a distribution layer for the tool ecosystem agents connect to.

3 pros · 4 cons

Connections

Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.

Sources

  1. Website
  2. GitHub