npm · PyPI98Exceptionalhealth index
TypeScript★ 1,789↓ 15.3M/moSep 19, 2026
npm97Exceptionalhealth index

marko-js/markoA declarative, HTML-based language that makes building web apps fun
JavaScript · TypeScript · HTML★ 14.5K↓ 213.9K/moOct 20, 2026
npm95Exceptionalhealth index

inikulin/parse5HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.
TypeScript★ 3,930↓ 767M/moSep 16, 2026
npm95Exceptionalhealth index
JavaScript · TypeScript★ 1,342↓ 609.3K/moSep 6, 2026
npm95Exceptionalhealth index
TypeScript★ 2,426↓ 16.7M/moAug 27, 2026
npm94Exceptionalhealth index
JavaScript★ 3,805↓ 22.3K/moSep 17, 2026
npm · RubyGems94Exceptionalhealth index
JavaScript · TypeScript★ 12K↓ 28.4M/moAug 27, 2026
npm93Exceptionalhealth index
TypeScript★ 1,790↓ 179M/moSep 17, 2026
PyPI92Excellenthealth index
C++★ 1,141Sep 17, 2026
npm90Excellenthealth index
TypeScript★ 108↓ 15.1M/moSep 15, 2026
npm · Go90Excellenthealth index

samchon/typiaSuper-fast/easy runtime validators and serializers via transformation
Go · TypeScript★ 5,878↓ 2.3M/moAug 28, 2026
npm89Excellenthealth index
TypeScript★ 627↓ 340M/moSep 16, 2026
npm89Excellenthealth index
JavaScript★ 251↓ 133M/moSep 15, 2026
npm88Excellenthealth index
TypeScript★ 366↓ 21.3K/moSep 15, 2026
npm · Packagist88Excellenthealth index

moment/momentParse, validate, manipulate, and display dates in javascript.
JavaScript★ 47.9K↓ 136M/moSep 16, 2026
Maven88Excellenthealth index
Java★ 952Sep 19, 2026
npm88Excellenthealth index

readmeio/oasComprehensive tooling for working with OpenAPI definitions.
TypeScript★ 398↓ 14.1M/moAug 27, 2026
npm87Excellenthealth index

JairusSW/json-asMulti-GB/s JSON (de)serialization written in AssemblyScript utilizing elegant SIMD and SWAR algorithms
TypeScript★ 113↓ 29K/moOct 8, 2026
npm87Excellenthealth index
JavaScript★ 1,418↓ 186.7K/moSep 29, 2026
npm87Excellenthealth index
TypeScript★ 8↓ 2.4M/moSep 13, 2026
npm87Excellenthealth index

ljharb/qsA querystring parser and serializer with nesting support
JavaScript★ 8,940↓ 697M/moSep 16, 2026
NuGet86Excellenthealth index
C# · C++★ 11Oct 20, 2026
NuGet · npm86Excellenthealth index
C#★ 66Sep 14, 2026
NuGet86Excellenthealth index

asc-community/AngouriMathOpen-source cross-platform symbolic algebra library for C# and F#. Can be used for both production and research purposes.
C#★ 827Aug 23, 2026
PyPI86Excellenthealth index

fabiocaccamo/python-benedict:blue_book: dict subclass with keylist/keypath support, built-in I/O operations (base64, csv, html, ini, json, pickle, plist, query-string, toml, xls, xml, yaml), s3 support and many utilities.
Python · HTML★ 1,607↓ 1.3M/moSep 17, 2026
npm86Excellenthealth index

mholt/PapaParseFast and powerful CSV (delimited text) parser that gracefully handles large files and malformed input
JavaScript★ 13.6K↓ 57.5M/moSep 17, 2026
NuGet86Excellenthealth index

nietras/SepWorld's Fastest .NET CSV Parser. Modern, minimal, fast, zero allocation, reading and writing of separated values (`csv`, `tsv` etc.). Cross-platform, trimmable and AOT/NativeAOT compatible with blazing fast SIMD vectorized parsing.
C#★ 1,472Sep 11, 2026
npm86Excellenthealth index

productdevbook/hucreZero-dependency spreadsheet engine. Read & write XLSX, CSV, ODS. Pure TypeScript, works everywhere.
TypeScript★ 2,160↓ 107.9K/moSep 14, 2026
crates.io86Excellenthealth index
Rust★ 254↓ 1.5M/moOct 18, 2026
npm86Excellenthealth index
JavaScript★ 26↓ 195M/moOct 20, 2026