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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jest
Delightful JavaScript testing with zero-config setup, snapshots, mocking, and coverage
testify
The essential Go toolkit for assertions, mocks, and structured test suites.
Day.js
A 2KB immutable JavaScript date-time library with a Moment.js-compatible API
MSW (Mock Service Worker)
Seamless REST and GraphQL API mocking for browser and Node.js
Immer
Create your next immutable state by mutating the current one.
Luxon
Immutable, chainable date and time handling for JavaScript with built-in time zones and Intl.
Redux Toolkit
The official, opinionated, batteries-included toolset for efficient Redux state management
date-fns-tz
IANA time zone support for date-fns, powered by the native Intl API with zero bundled time zone data.
Redux
A predictable, framework-agnostic state container for JavaScript applications.
Slate
Completely customizable framework for building rich text editors
immutable-js
Persistent immutable List, Map, Set, and Stack collections for JavaScript with structural sharing.
mockall
A powerful mock object library for Rust unit testing.
gock
Versatile HTTP traffic mocking for Go, intercepting any net/http-based client for deterministic tests.
mock
The rolling backport of Python's unittest.mock library
VCR.py
Record and replay HTTP interactions to speed up tests