Zed

Zed builds an open-source code editor for developers working with teammates and AI agents on macOS, Windows and Linux. Zed combines collaborative editing, debugging, Git operations and edit prediction, with support for running agents in parallel. Developers can connect agents through Agent Client Protocol and delegate changes while reviewing their progress. Its separate application, Delta, entered private beta in 2026, letting teams work with agents and review their output while keeping conversations connected to evolving code.

Founded in 2021, Zed is led by CEO and co-founder Nathan Sobo, alongside co-founders Antonio Scandurra and Max Brunsfeld. All three previously worked on Atom; Brunsfeld also created Tree-sitter, an incremental parsing framework. Zed’s engineering approach centers on GPUI, its Rust UI framework organized around GPU rendering. Delta uses DeltaDB to synchronize conversations and working code in real time, capturing edits between Git commits without requiring teammates to abandon their existing Git repository.

In 2026, the company reported hundreds of thousands of daily users of its editor. Zed offers an optional paid service alongside the open-source product. It announced a $32 million Series B led by Sequoia Capital in 2025, bringing total funding to more than $42 million.