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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store2
A friendlier localStorage and sessionStorage API with JSON, namespacing, and pluggable extensions
JMSSerializerBundle
Symfony integration bundle for JMS Serializer, wiring configurable JSON/XML/YAML (de)serialization into the framework's DI container
dataclasses-json
Encode and decode Python dataclasses to and from JSON with a single decorator or mixin.
github3.py
A comprehensive, actively developed Python wrapper around GitHub's REST API v3.
ojg
A high-performance JSON parser and toolkit for Go with a full JSONPath implementation.
yaml.js
Standalone JavaScript YAML 1.2 parser and encoder for Node.js and browsers, with yaml2json and json2yaml command-line tools.
GenSON
A Python library and CLI that generates and merges JSON Schema from sample objects and existing schemas.
python-json-patch
A lightweight Python library for creating and applying JSON Patch (RFC 6902) operations to any JSON-like document.
rfc6902
A complete TypeScript implementation of RFC 6902 JSON Patch and RFC 6901 JSON Pointer for diffing, applying, and testing JSON documents.
node-xml
A fast, minimal JavaScript object-to-XML string builder for Node.js projects.
package-json
Fetch metadata for any npm package, including scoped ones, straight from the registry with a single async call.
react-json-view-lite
A lightweight, zero-dependency React component that renders JSON data as an accessible, collapsible tree view.
eslint-plugin-jsonc
ESLint plugin that applies JavaScript-style linting, auto-fixing, and formatting rules to JSON, JSONC, and JSON5 files.
tree-sitter-json
Fast, incremental JSON grammar for the Tree-sitter parsing framework.
jsonpointer
Get and set nested JSON values using RFC 6901 JSON Pointer path strings
comment-json
Parse and stringify JSON with comments, preserving them exactly through modification and re-save.
assert-json-diff
Compare two serializable values by diffing their JSON and get clear, precise error output.
serde_json_path
RFC 9535 JSONPath queries for serde_json Value trees in Rust.
http-cookie-agent
Adds tough-cookie-based cookie jar support to Node.js global fetch, undici, axios, node-fetch, and other HTTP clients.
sns-payload-validator
Verifies AWS SNS message signatures for HTTP/S and Lambda payloads.
json-render
The Generative UI framework: AI builds real, reliable interfaces from prompts, constrained to components you define.
fractal
A presentation and transformation layer for complex PHP API output
httpexpect
A chainable Go library for declarative, end-to-end HTTP and REST API testing.
Convict
Schema-driven configuration management for Node.js with built-in validation
