The lightest editor
for coding with AI.

Built in Rust and drawn straight on the GPU, so it runs at a buttery 60fps. Claude Code and Codex run inside it, on the subscription you already have.

Download for Mac Download for Windows

Free · macOS 13+ (Apple Silicon) · Get the Windows versionFree · Windows 10+ · Get the Mac version

Claude Code answering inside necoder (real capture)

FAST & LIGHT

Fast and light.
It changes your whole day.

A native editor written in Rust, with no Electron and no WebView. Opening, typing and scrolling never make you wait.

60fps

Buttery smooth

Drawn straight on the GPU, so scrolling and typing never stutter.

Rust

No Electron

No browser inside, so it starts fast and stays light on memory.

⌘P

Found as you type

Even in a project with tens of thousands of files, type part of a name and you're there.

YOUR AI, INSIDE

Your AI,
right inside.

No API key. Talk to Claude Code or Codex inside the editor, on the plan you already pay for.

The agents you already use

Connected over the open Agent Client Protocol (ACP). Add any other agent you like.

Claude CodeCodex

Copilot

Qwen

OpenCode

Kimi+ Add

Ready with one button

From install to sign-in, without opening a terminal.

1Turn on an AI

2Press “Install”

3Sign in in your browser

✓Start talking

Review every change

Check each diff the AI writes. Don't like it? Rewind any time.

The AI checks off its own todos

The AI keeps the todo board up to date, so you can see how far it has got.

COLOR & WORKSPACE

Color keeps you oriented.
Across every project.

Each project has a color that runs through the rail, tabs, caret and AI threads, so you never lose track of what's running where.

Color is the landmark

Which AI is pointed at which project and branch, and how many tokens it has used, is always on screen.

Every project and branch in one window

Keep projects on the rail and switch from the ⌘O list. Hop between worktrees and branches without leaving the window.

The same editor over SSH

Uses your existing SSH config. Server files feel as fast as local ones, and the server needs no Node.

ssh://you@dev-box⎇ main● Connected

$ ne ssh://you@dev-box/~/app
› Connected to dev-box
› Started necoder on the server (one small binary)
› Opened　files, Git, terminal and AI, all there

When in doubt, ⌘⇧P

Every command lives in the palette: files, search, switching projects.

FLEET

Run your AIs like a team.

Give each Task its own worktree and run agents side by side. Let the Captain hand out the work and pull it back together.

What's running, where, and how far along

Every Task and agent on one screen.

The Captain runs it

Say what you want; it splits the work into Tasks for the AIs. When they're done, review the diffs and merge.

ON THE GO

Away from your desk?
Use your phone.

Scan a QR code to check on your AIs and ask for the next step from your phone. Answer approvals and questions on the spot.

necoder on a phone, asking to approve a command

MEET NYACO

Nyaco tells you how the AI is doing.

Thinking, writing or done? One look at Nyaco in the panel tells you, without reading a word.

ThinkingMulling it over

WorkingWriting code

DoneCheers when it's finished

IdleNaps until you call

EVERYTHING ELSE

A complete editor, too.

Everything you need day to day, with or without AI.

Completion and go-to-definition (LSP)Git diff, staging and blameTerminalProject-wide searchMultiple cursorsHTML previewThemesChat mode for everything that isn't codeEnglish / 日本語

FreeFree forever. No account needed.

Open sourceAGPL-3.0. All the source is on GitHub.

No telemetryNothing about how you use it leaves your machine.

Mac and WindowsThe same editor on both.

The next editor
moves with its agents.