semantic diff engine · launching 2026

Not everything that changed matters.

Mantish classifies every change in your PR — moved, extracted, renamed, or modified — across files, not just within them.

Works with Git·VS Code·JetBrains Rider·Desktop
01 · Sandbox

Try Mantish on a real repo.

Explore a sample repo or drop your own files. See semantic diff, structure view, and tags in action — no account needed.

sandbox.mantish.dev
02 · Views

One change, three lenses.

Structure for shape, diagram for impact, semantic for intent — switch between them without leaving the diff.

03 · Auto-mute noise

Hide the churn. Surface the change.

Mantish classifies every change by intent — formatting, renames, imports, logic — and hides the noisy ones unless you ask.

RenameSymbol renamed without logic changes
No example available
Mute rulesClick a rule to see an example
04 · The rest of it

Built for how you actually review.

Semantic diff

Detects moved, extracted, renamed, and modified code — not just added and deleted lines.

ast · cross-file

Structure view

See what changed at the class and method level. Expand any member to see the full diff inline.

outline · folded

Group changes

Cluster diffs by category — every rename, every formatting tweak, every logic edit in its own bucket.

by-category

12+ languages

C#, TypeScript, JavaScript, Go, Python, Java, Kotlin, Rust, C/C++, and more — all with structural analysis.

ts · cs · go · py · rs

Auto-mute noise

Automatically dims formatting, imports, and whitespace changes so you can focus on logic.

21+ built-in tags

Spotlights

The opposite of auto-mute — pin the change types you always want to see, so risky logic edits stand out from the rest.

tag-driven

Works with every host

Native support for GitHub, Azure DevOps, GitLab, and Bitbucket — switch hosts without switching tools.

github · ado · gitlab · bb

IDE integration

Native VS Code and JetBrains Rider plugins, plus a standalone desktop app. Same engine everywhere.

mac · linux · win

Split comment views

Read comments alongside the diff instead of in a sidebar tab — context and feedback travel together.

inline

Color-blind modes

Protanopia, deuteranopia, and tritanopia palettes — diff colors that don't blur into each other.

a11y

Code anonymization

Strip identifiers, strings, and comments before AI analysis — keep proprietary code private.

privacy

Live debug

Execute code from the pull request right in the review — mock external methods and data to see how the change behaves.

c# · run-in-review

Your PR is bigger than your change.

Mantish is launching in 2026. Join the waitlist to get early access.