High-performance open-source code editor written in Rust, built by the creators of Atom and Tree-sitter — now betting on operation-level version control
HQ: Colorado, United States (distributed team) | Founded: 2021 | Employees: Not publicly disclosed (small team, ~30-50 est.) | Stage: Series B | Website: https://zed.dev
Zed is a code editor written from scratch in Rust, built to leverage every CPU core and the GPU so it stays fast on huge codebases. The team isn't new to editors: Nathan Sobo joined GitHub in 2011 to build the Atom editor and led the team until 2018; Antonio Scandurra joined Atom in 2014 working on core data structures and collaborative editing; Max Brunsfeld is the creator of Tree-sitter, the parsing library that powers syntax highlighting in Atom, Zed, Neovim, and GitHub itself.
The company's first act was performance and multiplayer: CRDT-based real-time collaboration (multiple people editing the same buffer, chatting, and screen-sharing inside the editor), channels for team coordination, and — as AI arrived — an agent panel and 'Edit Prediction' powered by Zeta, Zed's own open-source open-data model for predicting your next edit. The editor is entirely GPL-3 open source; the business is an optional Pro subscription (~$20/month) for AI features.
The second act, announced with the Series B in August 2025, is a rethinking of version control. Zed's argument: Git's snapshot-and-commit model breaks down for continuous conversation — with teammates and now with AI agents. Its answer is DeltaDB, an operation-based version control that uses CRDTs to record every edit incrementally, interoperates with Git, and enables character-level permalinks that survive code changes. In September 2026, Zed put 'Replace PRs with Delta' into public beta — the bet being that the future of development is conversations with humans and agents durably linked to the code itself.
Sequoia led the $32M Series B in August 2025, bringing total funding to over $42M. Zed remains a small, deliberately focused team competing for developer mindshare against Microsoft's VS Code, Cursor, and JetBrains — but with a founder pedigree, an open-source core, and a genuinely original technical thesis rather than a fork.
Zed is betting that after AI autocomplete, the next battleground for developer tools is collaboration itself — an editor fast enough to feel native, plus DeltaDB, a version-control system that tracks every edit instead of snapshots. Sequoia's $32M bet is credible: the founders built Atom, Electron-era tooling, and Tree-sitter, and the editor is GPL-3 open source with real community pull.
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