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

48Health
Library npm

swagger-ui-express

Serves interactive Swagger UI API documentation directly from your Express app based on a Swagger/OpenAPI JSON or YAML document.

1,495
MIT
Used by 16
68Health
Library Go

zerolog

A zero-allocation, chaining-API JSON logger for Go built for both structured production output and pretty local development logs.

12,505
MIT
Used by 15
44Health
Library npm

electron-store

Simple, encrypted JSON persistence for your Electron app — save user settings, window state, and cache across the main and renderer processes.

5,019
MIT
Used by 15
39Health
Library npm

json-schema

A lightweight, historical CommonJS implementation of the original JSON Schema draft specifications

529
Other
Used by 15
51Health
Library npm

ExcelJS

Read, manipulate, and write XLSX spreadsheet data, styles, and formulas in JavaScript

15,469
MIT
Used by 14
46Health
Library Go

jsoniter

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

13,867
MIT
Used by 14
85Health
Tool npm

openapi-ts

OpenAPI-to-TypeScript code generator producing production-grade SDKs, Zod schemas, and TanStack Query hooks.

5,406
MIT
Used by 14
51Health
Library npm

JSON-Patch

Lean, high-performance RFC 6902 JSON Patch and JSON Pointer implementation for applying, generating, validating, and observing diffs between JSON documents.

1,982
MIT
Used by 14
60Health
Library npm

@apidevtools/swagger-parser

Parses, validates, and dereferences Swagger 2.0 and OpenAPI 3.x specs in Node.js and browsers

1,207
MIT
Used by 14
65Health
SDK npm

libSQL Client (TypeScript)

The TypeScript/JavaScript driver for libSQL and Turso databases

576
MIT
Used by 14
71Health
Library npm

JSONPath

A JavaScript library for querying, transforming, and extracting data from JSON documents using an extended JSONPath syntax.

1,158
MIT
Used by 13
42Health
Library npm

GSAP

The industry-standard JavaScript animation library for tweening CSS, SVG, canvas, and UI with rock-solid cross-browser reliability.

28,405
Other
Used by 11
95Health
Library npm

@rjsf/core

The React engine that turns a JSON Schema into a fully working form

15,896
Apache 2.0
Used by 10
42Health
Library Go

sjson

A fast, dependency-light Go library for setting and deleting values in JSON documents by dot-path, without full unmarshaling.

2,737
MIT
Used by 10
58Health
Library npm

conf

Simple, schema-validated config file persistence for Node.js apps and CLI tools

1,346
MIT
Used by 10
86Health
Library Cargo

serde_with

Custom de/serialization helpers for Rust's serde, via the with and serde_as annotations

855
Apache 2.0
Used by 10
75Health
Library PyPI

feedparser

Parses RSS, Atom, RDF, CDF, and JSON feeds into one normalized Python dictionary.

2,421
Other
Used by 9
31Health
Library npm

Partial JSON

Parses incomplete JSON strings streamed token-by-token from an LLM into usable JavaScript values as they arrive.

244
MIT
Used by 9
84Health
Library PyPI

json_repair

Repair malformed JSON from LLMs, APIs, logs, and user input — a drop-in fallback for json.loads().

5,096
MIT
Used by 8
89Health
Library PyPI

msgspec

A fast, zero-cost serialization and validation library for JSON, MessagePack, YAML, and TOML in Python.

4,105
BSD 3
Used by 8
55Health
SDK npm

msgraph-sdk-javascript

Official Microsoft Graph JavaScript SDK for calling the Graph API from Node.js and the browser.

833
MIT
Used by 8
70Health
Library npm

json-2-csv

Converts arrays of JSON documents to RFC 4180 compliant CSV and back, with native support for nested sub-documents.

458
MIT
Used by 8
94Health
Library npm

gridstack.js

A dependency-free TypeScript library for building draggable, resizable, responsive dashboard grid layouts in the browser.

9,115
MIT
Used by 7
78Health
Library Cargo

config

Layered configuration system for Rust applications with strong 12-factor support

3,209
Apache 2.0
Used by 7

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