Directory

Open Source Packages

Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.

5929 packages

All Packages

74Health
Library npm

qs

A battle-tested querystring parser and serializer for Node.js with nested object support and built-in security limits.

8,943
BSD 3
Used by 49
44Health
Library npm

buffer

The Node.js Buffer API, reimplemented for the browser on top of Uint8Array.

1,891
MIT
Used by 42
50Health
Library npm

mime-types

The ultimate JavaScript content-type utility for resolving MIME types from file extensions and paths.

1,476
MIT
Used by 41
82Health
Library npm

body-parser

Node.js body-parsing middleware that turns raw HTTP request bodies into ready-to-use req.body objects.

5,499
MIT
Used by 36
38Health
Library npm

gray-matter

Fast, dependable front-matter parser for YAML, JSON, TOML, and CoffeeScript metadata blocks

4,491
MIT
Used by 31
54Health
Library npm

cookie

Basic HTTP cookie parser and serializer for HTTP servers, with zero dependencies and full RFC 6265 support.

1,535
MIT
Used by 31
77Health
Library npm

csv-parse

A flexible, dependency-free CSV parser for Node.js and the browser with stream, callback, and sync APIs.

4,287
MIT
Used by 29
47Health
Library npm

node-xml2js

XML-to-JavaScript-object parser and builder for Node.js

4,959
MIT
Used by 19
77Health
Library npm

smol-toml

A small, fast, spec-compliant TOML parser and serializer for JavaScript

311
BSD 3
Used by 17
46Health
Library Go

jsoniter

A high-performance, 100% compatible drop-in replacement for Go's encoding/json.

13,866
MIT
Used by 14
68Health
Library Go

protobuf

Legacy Go bindings for Protocol Buffers, now a thin compatibility wrapper around google.golang.org/protobuf.

10,081
BSD 3
Used by 12
74Health
Library Go

go-toml

The original Go library for loading, querying, and marshaling TOML documents, now superseded by go-toml v2.

1,986
MIT
Used by 12
46Health
Library Go

msgpack

A reflect-based MessagePack encoder and decoder for Go with struct tag support, custom extensions, and a sync.Pool-backed API for allocation-light serialization.

2,676
Other
Used by 10
50Health
Library Go

GoGo Protobuf

A deprecated fork of golang/protobuf adding faster marshaling, custom types, and richer Go code generation for Protocol Buffers.

5,661
BSD 3
Used by 9
55Health
Library Go

go-yaml

A dependency-free, spec-compliant YAML encoder and decoder for Go, built from scratch with AST access, YAML Path queries, and reversible transformations.

2,229
MIT
Used by 8
79Health
Library Go

maxminddb-golang

A high-performance Go library for reading and decoding MaxMind DB (.mmdb) files, including GeoIP2 and GeoLite2 databases.

752
Other
Used by 8
75Health
Library Go

koanf

A lightweight, extensible Go library for reading and merging configuration from files, env vars, flags, and remote sources.

4,212
MIT
Used by 7
54Health
Library npm

rss-parser

Lightweight RSS and Atom feed parser for Node.js and the browser that turns XML feeds into plain JavaScript objects

1,529
MIT
Used by 7
61Health
Library npm

feed

Generate RSS 2.0, Atom 1.0, and JSON Feed 1.0 syndication feeds from a single TypeScript API.

1,411
MIT
Used by 7
74Health
Library Go

etree

A lightweight, pure Go library for parsing, querying, and modifying XML with an element-tree model and XPath-like path queries.

1,668
Other
Used by 6
55Health
Library npm

toml-node

A zero-dependency, spec-compliant TOML parser for Node.js with BigInt and Temporal support.

326
MIT
Used by 6
45Health
Library Go

Gorilla Schema

Gorilla Schema fills Go structs from HTTP form values and encodes them back into url.Values using struct tags.

1,515
BSD 3
Used by 5
44Health
Library Go

feeds

A Go library for generating RSS, Atom, and JSON feeds from a single, format-agnostic Feed model.

816
BSD 3
Used by 5
77Health
Library Go

jsonparser

A fast, allocation-free JSON parser for Go that reads values by key path without unmarshaling into structs.

5,655
MIT
Used by 4

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