Agents write.
You understand.

Your local workspace for reviewing agent-written code. Read the diff, trace the context, and know exactly what you’re shipping.

Get Tachyon Explore the workbench

Free to use Runs locally Read-only

THE REVIEW LOOP01 — 03

Your coding agentBuilds what’s next.

WRITE

git changes

Your repositoryEvery branch. Every worktree.

TRACK

local workspace

You + TachyonUnderstand before you ship.

REVIEW

$ tachyon ~/your-project

THE WORKBENCHExplore a sample review

src/auth session.tsModified

@@ src/auth/session.ts TypeScript

import { db } from "../db";
export async function getSession(token: string) {
−  return db.sessions.findUnique({
+  const session = await db.sessions.findUnique({
    where: { token },
  });
+  if (!session) return null;
+  if (session.expiresAt < new Date()) return null;
+  return session;
}

A little context. A much clearer review.

feat/session-validation Read-onlySample repository

↳ Take a look around. Select a file, switch the diff, or mark it reviewed.

See the actual app

Tachyon code explorer with a file tree and syntax-highlighted Go code

Real app screenshot. Select the image to view full size.

A new tool. Your same workflow.

Your terminal Your coding agent Your review, in Tachyon

01 / THE WORKFLOW

From “it works” to “I get it.”

Your agent moves fast. Tachyon gives you the space to understand what changed, why it matters, and what comes next.

Start your first review

Point it at your project.

Run one command. Your repository opens in a focused workspace in your browser.

$ tachyon ~/your-project

See what actually changed.

Choose a worktree or branch. Get a clear view of the changed files and the diff that matters.

feat/your-next-idea 3 changed

Review with confidence.

Trace the code, walk through each change, and mark the exact file versions you’ve reviewed.

All changes reviewed 3 / 3

02 / BUILT FOR READING CODE

Less friction. More understanding.

The tools you reach for in a review, together in one quiet workspace.

Find your way. Instantly.

Fuzzy file search, symbols, and project-wide search keep the next answer a few keystrokes away.

Built for repositories big and small

Follow the whole story.

Jump to definitions, find references, and trace callers with optional local language servers.

Context beyond the lines that changed

Right at home. On your machine.

Read your code locally, without an account or telemetry. A dedicated review space that leaves your source files alone.

Your workspace, under your control

Keyboard-first navigation ~280 languages 14 built-in themes Multiple worktrees

03 / UNDER THE HOOD

Small footprint. Full picture.

One Go binary. Fast search. A workspace that gets out of your way and lets your machine get on with everything else.

~16 MB

Base memory usage

Flask benchmark · server RSS

370 ms

To index the Linux kernel

95,710 files · published benchmark

1 binary

Everything you need to read

No runtime dependencies

Explore the benchmarks

Published standalone Tachyon results. Memory excludes the browser and optional language servers; results vary by machine and repository.
Repository	Files	Index	Fuzzy search	Memory
Flask	235	1 ms	0.8 ms	16 MB
Redis	1,855	13 ms	1.0 ms	17 MB
React	7,178	52 ms	2.7 ms	21 MB
Kubernetes	25,926	150 ms	13.5 ms	30 MB
Linux kernel	95,710	370 ms	6.0 ms	55 MB

04 / GET STARTED

Your next review
starts here.

Install Tachyon, open your project, and see what your agents have been up to.

Free to use One self-contained binary Your browser is the workspace

See what’s new

macOS / Linux / BSD

curl -fsSL https://www.tachyon.run/install.sh | bash

Detects your platform, verifies the download, and installs to ~/.local/bin. No account needed.

Then open your project$ tachyon ~/your-project

Read the release notes

05 / A FEW ANSWERS

A little more context.

A few things you might be wondering before your first review.

Is Tachyon an editor?

Tachyon is a dedicated code reader and review workspace. Your agent or editor makes the code changes; Tachyon helps you explore them, trace the logic, and mark files reviewed without editing your source files.

Does my code stay on my machine?

The viewer runs locally and binds to 127.0.0.1 by default. There are no accounts or telemetry. Update checks, downloads, and optional language-server setup can use the network; reviewing your code does not require uploading it to a hosted service.

Can my agents keep working while I review?

Yes. Tachyon can follow changes across worktrees while you review. Pause live updates to inspect a snapshot, and pick up newer changes when you are ready. Review marks belong to exact file versions, so further edits make those marks stale.

Which languages does it support?

Syntax highlighting covers roughly 280 languages, with 14 themes. Optional local language servers add definitions, references, and call trails for languages including Go, Rust, TypeScript, Python, and Java. Language servers are installed separately; search and code reading work without them.

Is it free? How do I update?

Tachyon is free to use. The distributed binary ships under the MIT license. To update, run the quick install command again. It downloads and verifies the latest binary before replacing your installation.

Agents write.You understand.