Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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diff
A battle-tested JavaScript library for computing and applying text diffs at the character, word, line, sentence, CSS, or JSON level.
filesize.js
Zero-dependency JavaScript utility that converts byte counts into human-readable file size strings, with SI, IEC, and JEDEC standard support.
diff-match-patch
A battle-tested JavaScript port of Google's diff-match-patch engine for computing, applying, and fuzzy-matching text differences.
@codemirror/merge
A diff and merge view extension for the CodeMirror 6 code editor
rust-pretty-assertions
Drop-in replacements for Rust's assert_eq! and assert_ne! that print colorful, side-by-side diffs instead of raw Debug dumps.
similar
A dependency-free Rust diffing library with Myers, Patience, Histogram, and LCS algorithms
react-diff-viewer-continued
A maintained React component for rendering GitHub-style text diffs
diff2html
Generate pretty, GitHub-style HTML diffs from git diff or unified diff output
jsondiffpatch
Diff and patch JavaScript objects with compact deltas, smart array diffing, and pluggable output formatters.
microdiff
A tiny, zero-dependency library for deep diffing objects and arrays with full TypeScript support.
expressive-code
A framework-agnostic engine that renders source code as richly annotated, syntax-highlighted HTML.
fast-diff
A fast, dependency-free JavaScript library for computing diffs between two strings using Myers' O(ND) algorithm.
python-unidiff
A typed Python library that parses unified diff data into inspectable PatchSet, PatchedFile, and Hunk objects.
parse-diff
A fast, dependency-free unified diff parser that converts raw patch text into structured file, chunk, and line-change objects for JavaScript and TypeScript projects.
libopenapi
A high-performance Go library for parsing, validating, mutating, bundling, and diffing OpenAPI 3.2/3.1/3.0, Swagger, Overlay, and Arazzo documents.
rfc6902
A complete TypeScript implementation of RFC 6902 JSON Patch and RFC 6901 JSON Pointer for diffing, applying, and testing JSON documents.
leven
Fast, dependency-free Levenshtein distance calculation for comparing and matching strings in JavaScript.
js-levenshtein
The fastest JavaScript implementation of the Levenshtein edit-distance algorithm, optimized for speed and low memory use.
similar-asserts
assert_eq!-style Rust macros with colorized diff output for readable test failures.
diffy
A Rust library for computing, parsing, and applying text diffs, patches, and three-way merges.
whatthepatch
A pure-Python library for parsing and applying unified, context, ed, and SCM-style patch/diff files.
mendoza
A TypeScript decoder for the Mendoza diff format, applying structured patches to JSON documents with optional incremental history tracking.
unidiff
Rust library for parsing unified diffs and extracting structured patch metadata.
@sanity/diff-patch
Generates conflict-resistant Sanity patch mutations by diffing two JSON documents or values.
