delta

Delta is a command-line pager for Git diffs and related search and blame output, best suited to developers who review code in a terminal. It combines syntax-aware presentation with documented Git, editor, and terminal integrations, while depending on a reasonably recent version of less for paging.

Overview

Delta focuses on making differences and command output easier to inspect rather than replacing Git or serving as a general-purpose visual comparison suite. Its free, MIT-licensed distribution permits use, modification, redistribution, sublicensing, and sale subject to the license conditions. That makes it a practical choice for individual and team workflows, provided less is available in a sufficiently recent version.

Key features

Diffs and search output

Side-by-side diffs include line numbers and automatic wrapping, which helps when reviewing long lines or scanning changes across a file. Delta also uses Levenshtein edit inference to highlight changes within lines, making small edits easier to distinguish from unchanged context. Syntax themes available with bat give users a range of established highlighting choices.

Beyond diffs, Delta can syntax-highlight output from ripgrep, git grep, grep, ripgrep JSON, and blame. That range is useful for developers who want a consistent, readable presentation across code review and command-line searches without switching tools.

Git and editor integrations

The manual explains how to configure Delta as Git's pager and interactive diff filter, and how to use zdiff3 for merge conflicts. It also covers Magit and VS Code, as well as tmux and GNU Screen. These documented paths make Delta especially relevant to developers whose review habits already depend on Git and terminal or editor workflows.

Blame and diff hyperlinks support GitHub, GitLab, SourceHut, and Codeberg. Release 0.20.0 adds OSC1717 diff-line metadata support for TUIs such as lazygit, extending its usefulness in terminal-based interfaces.

Pricing

Delta is free, with no paid plan or free trial. The git-delta plan costs nothing and provides MIT-licensed software, installable through a package manager or by downloading an executable. There are no seat or usage quotas attached to the plan. Its main practical cost is setup: users need a reasonably recent less for paging.

Platforms

Delta supports Linux, macOS, and Windows. The project offers executables for Linux glibc, Linux musl, macOS, and Windows, alongside package-manager installation instructions. This range makes it viable across common developer environments, though it remains a command-line tool rather than a graphical comparison application.

Who it's for

Delta is a strong fit for developers who routinely inspect Git changes, grep results, or blame output in a terminal and want line-level highlighting and syntax-aware presentation. Its documented Git, Magit, VS Code, tmux, and GNU Screen integrations also suit workflows that move between command-line and editor tools.

It is a weaker fit for someone seeking a self-contained pager or a dedicated graphical diff interface. Delta relies on less, and its focus is command-line output rather than a standalone visual comparison workspace.

Pros and cons

• Pro: Side-by-side diffs, line numbers, wrapping, and within-line change highlighting make code differences easier to scan.
• Pro: Syntax highlighting across Git, grep, ripgrep JSON, and blame output supports more than one review task.
• Pro: Git, editor, hosting, and terminal integrations suit established developer workflows across multiple platforms.
• Con: Paging depends on a reasonably recent version of less, so Delta is not an independent drop-in pager.
• Con: Its command-line focus makes it a poor match for readers who want a general-purpose graphical diff tool.

Alternatives

Diff and Merge Tools is a useful place to compare tools across the broader category. Choose Diffchecker instead if a freemium option with Linux, macOS, web, and Windows support is a better fit; its free tier has limited access to Pro features and some monthly try-count limits, while Pro + Desktop costs $15 a month.

Diffract is another freemium option for Linux, macOS, and Windows. Consider Difftastic if you want a free, MIT-licensed alternative available on Linux, macOS, and Windows. KDiff3 is a free, open-source alternative for those platforms; SourceGear DiffMerge is also free and supports Linux, macOS, and Windows.

Code Compare is a Windows-focused option with an extension and a free version, while its Pro plan is paid. Compare Suite is a Windows freemium option. Meld is a free GPLv2-or-later alternative for Linux and Windows.

For other software categories, see SNES Emulators or Disk Space Analyzers.

Verdict

Choose Delta if you want a free, permissively licensed way to make Git diffs and related command-line output clearer, with integrations that fit established developer workflows. Look elsewhere if you need a graphical comparison suite or a pager that does not rely on less.