Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter. https://zed.dev
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Swap arrayvec crate for heapless to use LenT optimization (#47101)
Swaps the `arrayvec` dependency for `heapless`, as the `heapless`
library allows changing the type used for the `len` field, which
`arrayvec` hard-codes to `usize`. This means that, for all the
`ArrayVec`s in Zed, we can save 7 bytes on 64 bit platforms by just
storing the length as a `u8`.

I have not benchmarked this change locally, as I don't know what
benchmarking tools are in this project.

As a small bit of context, I wrote the PR to `heapless` to add this
`LenT` generic after seeing a PR on the `arrayvec` crate that seems to
be dead now. Once I saw some of Zed's blog posts about the `rope` crate
and noticed the usage of `arrayvec`, I thought this might be a welcome
change.

Release Notes:

- N/A

---------

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
2026-03-21 14:05:30 +01:00
.cargo livekit: Use our build of libwebrtc.a (#51433) 2026-03-16 10:47:36 +01:00
.cloudflare docs: Document context servers (#21170) 2024-11-25 11:05:14 -05:00
.config Increase timeout for test_random_blocks (#50724) 2026-03-04 12:25:12 -05:00
.factory Add humanizer skill for AI writing pattern detection (#50021) 2026-02-24 14:58:52 -06:00
.github ci: Run clippy for x86_64-apple-darwin target (#52036) 2026-03-21 09:44:34 +01:00
.zed gpui: Rewrite Windows PlatformTextSystem for better performance (#48087) 2026-02-01 13:32:22 +01:00
assets agent: Add update_plan tool (#52048) 2026-03-20 23:03:32 +00:00
ci Move Nightly release to gh-workflow (#41349) 2025-10-28 13:57:23 -06:00
crates Swap arrayvec crate for heapless to use LenT optimization (#47101) 2026-03-21 14:05:30 +01:00
docs docs: Clean up old plan document (#51926) 2026-03-19 11:54:45 +00:00
extensions Remove language-extension-version script (#51838) 2026-03-18 14:47:43 +00:00
legal Update legal docs to reflect new terms of service (#50530) 2026-03-02 12:36:31 -08:00
nix livekit_client: Screensharing on Niri + NixOS (#52017) 2026-03-21 07:42:55 +01:00
script Add screen-sharing support on Wayland/Linux (#51957) 2026-03-19 22:10:42 +01:00
tooling ci: Run clippy for x86_64-apple-darwin target (#52036) 2026-03-21 09:44:34 +01:00
.git-blame-ignore-revs Add PR 50413 to .git-blame-ignore-revs (#50421) 2026-03-01 00:50:33 +01:00
.gitattributes windows: Make sure zed.sh using the correct line ending (#37650) 2025-09-05 16:25:55 +00:00
.gitignore docs: Improve Git documentation accuracy and structure (#47419) 2026-01-23 08:43:24 -08:00
.mailmap Update .mailmap (#47413) 2026-01-22 23:57:26 +05:30
.prettierrc ci: Add check for formatting default.json (#30034) 2025-05-06 18:55:26 +00:00
.rules Update AI docs for retired hosted models (#49486) 2026-02-18 10:36:38 -06:00
AGENTS.md ai: Symlink an AGENTS.md file to .rules (#45939) 2026-01-19 15:29:42 +01:00
Cargo.lock Swap arrayvec crate for heapless to use LenT optimization (#47101) 2026-03-21 14:05:30 +01:00
Cargo.toml Swap arrayvec crate for heapless to use LenT optimization (#47101) 2026-03-21 14:05:30 +01:00
CLAUDE.md Initial .rules file for agent with symlinks for other rules file paths (#29014) 2025-04-17 23:41:23 +00:00
clippy.toml Revert "Revert scheduler update (#46659)" (#46671) 2026-01-14 07:19:13 +00:00
CODE_OF_CONDUCT.md Remove community content from docs and point to zed.dev (#19895) 2024-10-29 09:44:58 -04:00
compose.yml Remove Postgres and stripe-mock from Docker Compose (#48313) 2026-02-04 03:42:58 +00:00
CONTRIBUTING.md Add Zed Feature Process document (#50747) 2026-03-06 14:14:53 -08:00
debug.plist WIP 2023-12-14 09:25:14 -07:00
default.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
Dockerfile-collab ci: Update workflows/scripts for deploying collab to use clang (#51224) 2026-03-10 22:41:43 +01:00
Dockerfile-collab.dockerignore ci: Move collab to Dockerfile-collab (#18515) 2024-09-30 16:14:26 -04:00
Dockerfile-cross.dockerignore Add remote server cross compilation (#19136) 2024-10-12 23:23:56 -07:00
Dockerfile-distros Support More Linux (#18480) 2024-09-30 17:46:21 -04:00
Dockerfile-distros.dockerignore Support More Linux (#18480) 2024-09-30 17:46:21 -04:00
flake.lock nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
flake.nix Try to improve nix caching (#48297) 2026-02-03 20:31:02 -07:00
GEMINI.md Add missing GEMINI.md rule file for gemini-cli (#38885) 2025-10-02 09:47:29 -04:00
LICENSE-AGPL Update license year (#24191) 2025-02-04 09:02:59 -05:00
LICENSE-APACHE Update license year (#24191) 2025-02-04 09:02:59 -05:00
LICENSE-GPL Licenses: change license fields in Cargo.toml to AGPL-3.0-or-later. (#5535) 2024-01-27 13:51:16 +01:00
livekit.yaml Add LiveKit server to Docker Compose (#7907) 2024-02-16 10:49:48 -05:00
lychee.toml ci: Check for broken links (#30844) 2025-06-06 09:39:35 +00:00
Procfile Update instructions for local collaboration (#35689) 2025-08-06 11:10:28 -07:00
Procfile.all Add agent thread sharing (#46140) 2026-01-06 12:49:51 -08:00
Procfile.web Remove PostgREST (#41299) 2025-10-27 13:27:59 -04:00
README.md Add sponsor button to main Zed repo (#46807) 2026-01-14 10:38:51 -06:00
renovate.json Remove workspace-hack (#40216) 2025-10-17 18:58:14 +00:00
REVIEWERS.conl Remove past reviewer (#51767) 2026-03-17 16:34:35 +00:00
rust-toolchain.toml GPUI on the web (#50228) 2026-02-26 18:36:50 +01:00
rustfmt.toml nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
shell.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
typos.toml docs: Add Vue language server configuration (#51356) 2026-03-12 16:30:21 +00:00

Zed

Zed CI

Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.


Installation

On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager (macOS/Linux/Windows).

Other platforms are not yet available:

Developing Zed

Contributing

See CONTRIBUTING.md for ways you can contribute to Zed.

Also... we're hiring! Check out our jobs page for open roles.

Licensing

License information for third party dependencies must be correctly provided for CI to pass.

We use cargo-about to automatically comply with open source licenses. If CI is failing, check the following:

  • Is it showing a no license specified error for a crate you've created? If so, add publish = false under [package] in your crate's Cargo.toml.
  • Is the error failed to satisfy license requirements for a dependency? If so, first determine what license the project has and whether this system is sufficient to comply with this license's requirements. If you're unsure, ask a lawyer. Once you've verified that this system is acceptable add the license's SPDX identifier to the accepted array in script/licenses/zed-licenses.toml.
  • Is cargo-about unable to find the license for a dependency? If so, add a clarification field at the end of script/licenses/zed-licenses.toml, as specified in the cargo-about book.

Sponsorship

Zed is developed by Zed Industries, Inc., a for-profit company.

If youd like to financially support the project, you can do so via GitHub Sponsors. Sponsorships go directly to Zed Industries and are used as general company revenue. There are no perks or entitlements associated with sponsorship.