mmanela/diffplex

Health v2 · maintenance only

Adoption not part of the score

1278 stars · 202 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

DiffPlex is a C# library targeting .NET Standard 1.0+ that generates textual diffs between pieces of text. It provides low-level diffing, side-by-side diff models, three-way diff and merge, and unified diff (unidiff) rendering compatible with Git and patch tools.

Use cases

• compare two text files and show line-by-line differences in C#
• generate unified diff output compatible with git and patch
• build a side-by-side diff view in a web or desktop app
• perform three-way merge and detect conflicts between text versions
• highlight inserted and deleted lines in a console application
• add diffing capabilities to a .NET test or code review tool

When to choose

• you need textual diffing in a .NET or .NET Standard application
• you want side-by-side, inline, or unified diff rendering out of the box
• you need three-way diff and merge functionality in C#

When to avoid

• you need binary or image diffing rather than text
• you are not working in a .NET environment
• you need a full version-control system rather than a diffing library

Facets

library · maturity stable

parser developer-tools developer-tools text-editors version-control cross-platform dotnet diff text-diff csharp netstandard unidiff three-way-merge side-by-side

Member repositories

For agents

markdown · JSON · MCP: product_card(name="mmanela/diffplex")