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

67Health
Library PyPI

PyExasol

Official low-overhead Python driver for the Exasol database with fast HTTP transport.

81
MIT
Used by 1
35Health
SDK PyPI

wiremock

Python client and Testcontainers integration for driving a WireMock server from tests

80
Apache 2.0
Used by 1
63Health
Library PyPI

Python JSONPath

A flexible RFC 9535 JSONPath engine for Python with JSON Pointer and JSON Patch.

79
MIT
Used by 1
73Health
Library PyPI

tink-py

Google's misuse-resistant cryptography library for Python, providing safe AEAD, MAC, digital signature, and hybrid encryption APIs.

78
Apache 2.0
Used by 1
25Health
Library npm

js-string-escape

Escapes strings into safe JavaScript string literals, correctly handling quotes, backslashes, and all four ECMAScript line-terminator characters.

71
MIT
Used by 1
38Health
Library npm

final-form-arrays

Array mutators for Final Form that add push, pop, insert, remove, move, swap, and more to manage dynamic list fields.

70
MIT
Used by 1
33Health
Library PyPI

graphql-query

A complete Python DSL for building correct GraphQL query strings from typed classes.

70
MIT
Used by 1
70Health
SDK npm

flagsmith-js-client

The official JavaScript and React Native client SDK for Flagsmith, the open source feature flag and remote configuration platform.

67
BSD 3
Used by 1
80Health
SDK npm

commercetools Platform SDK

Fully-typed TypeScript client for every commercetools Composable Commerce API endpoint, generated straight from the platform's RAML spec.

65
MIT
Used by 1
34Health
Library PyPI

dirhash-python

Compute a single deterministic hash of a file system directory in Python

61
MIT
Used by 1
27Health
SDK PyPI

python-sonic-client

Python client for the Sonic search backend, providing ingest, search, and control channel operations over its lightweight TCP protocol.

61
MIT
Used by 1
38Health
Library PyPI

kgb

Function spies for Python unit tests that intercept, record, and reroute calls without heavy-handed mocking.

53
MIT
Used by 1
28Health
Library npm

truncate

A tiny zero-dependency JavaScript utility that truncates text to a length while keeping URLs and email addresses intact.

52
MIT
Used by 1
47Health
SDK PyPI

chargebee-python

Official Python client library for the Chargebee subscription billing and revenue-management API.

48
MIT
Used by 1
37Health
Library PyPI

zipstream-ng

A modern Python library for generating and streaming ZIP files without buffering them in memory.

48
Other
Used by 1
28Health
Library npm

focus-options-polyfill

Polyfill for the focusOptions preventScroll flag on HTMLElement.focus().

47
MIT
Used by 1
38Health
Library PyPI

pydantic-collections

Validated, list-like collections of Pydantic models via a single BaseCollectionModel class.

47
Apache 2.0
Used by 1
31Health
Library PyPI

python3-openid

OpenID 2.0 authentication library for Python 3, with relying-party (consumer) and identity-provider (server) support.

46
Apache 2.0
Used by 1
23Health
Library PyPI

py-ubjson

Universal Binary JSON (UBJSON) draft-12 encoder and decoder for Python

45
Apache 2.0
Used by 1
22Health
Library npm

regexp.escape

A robust, spec-compliant polyfill for RegExp.escape() that safely escapes regex special characters, working as far down as ES3.

44
MIT
Used by 1
39Health
Library PyPI

BlendModes

Apply Photoshop-style layer blend modes to images in Python with NumPy and Pillow

38
MIT
Used by 1
64Health
Framework npm

@tryghost/api-framework

A composable request pipeline that runs Ghost's API controllers through validation, serialization, permissions, and query stages.

37
MIT
Used by 1
37Health
Library npm

memory-level

In-memory abstract-level database for Node.js and browsers, backed by a fully persistent red-black tree.

36
MIT
Used by 1
51Health
SDK npm

configcat-js

Official JavaScript SDK for evaluating ConfigCat feature flags and remote config values directly in the browser.

34
MIT
Used by 1

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers