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

75Health
Library Go

lipgloss

Lipgloss brings a CSS-like, declarative styling API to Go terminal apps, covering colors, borders, layout, and compositing for building polished TUIs.

11,876
MIT
Used by 16
47Health
Library Go

go-cache

A thread-safe, in-memory key-value cache for Go with per-item expiration, atomic counters, and optional disk persistence.

8,840
MIT
Used by 16
65Health
Library Go

dns

A low-level, spec-complete DNS library for Go covering client, server, DNSSEC, and zone-file parsing.

8,774
BSD 3
Used by 16
75Health
Library PyPI

bcrypt (Python)

A Python library for secure password hashing using the bcrypt algorithm with an adjustable work factor

1,501
Apache 2.0
Used by 16
98Health
Library Go

moby/moby/api

The independently-versioned Go module of shared request/response types for the Docker Engine API, used by both the daemon and third-party Go clients.

72,143
Apache 2.0
Used by 15
91Health
Framework PyPI

django-rest-framework

The most widely-used toolkit for building Web APIs on top of Django, with serializers, viewsets, and a built-in browsable API.

30,191
BSD 3
Used by 15
78Health
Library Go

migrate

Database schema migrations for Go, usable as a CLI tool or an importable library with pluggable source and database drivers.

18,944
MIT
Used by 15
98Health
SDK PyPI

Azure Identity (Python)

Microsoft Entra ID token authentication for Azure SDK clients in Python

5,609
MIT
Used by 15
48Health
Library Go

Sprig

Over 100 template functions for Go's text/template and html/template, covering strings, lists, dicts, dates, math, crypto, and semver comparisons.

4,746
MIT
Used by 15
46Health
Library PyPI

itsdangerous

A small Python toolkit for cryptographically signing data so you can trust it hasn't been tampered with when it comes back from an untrusted client.

3,135
BSD 3
Used by 15
92Health
SDK Go

minio-go

The official Go client SDK for MinIO and any Amazon S3 compatible object storage service.

3,003
Apache 2.0
Used by 15
40Health
Library PyPI

aiosqlite

Async/await-friendly wrapper around Python's built-in sqlite3 module for asyncio applications.

1,576
MIT
Used by 15
83Health
Library PyPI

markdown-it-py

A CommonMark-compliant Markdown parser for Python, ported from the JS markdown-it

1,370
MIT
Used by 15
76Health
Library npm

node-html-parser

A very fast HTML parser that builds a lightweight DOM tree with full CSS3 selector support.

1,246
MIT
Used by 15
77Health
Library PyPI

croniter

Parses cron schedule strings and iterates the matching datetime values, with DST, second/year fields, and last-weekday support.

562
MIT
Used by 15
88Health
Framework PyPI

FastMCP

The fast, Pythonic framework for building Model Context Protocol servers, clients, and apps

27,913
Apache 2.0
Used by 14
91Health
Framework PyPI

Pydantic AI

A type-safe Python agent framework built by the Pydantic team

20,217
MIT
Used by 14
92Health
Library PyPI

networkx

Python library for creating, manipulating, and analyzing complex networks and graphs.

17,292
BSD 3
Used by 14
66Health
Library npm

mathjs

Extensive math library for JavaScript and Node.js with big numbers, complex numbers, units, and matrices.

15,078
Apache 2.0
Used by 14
46Health
Library Go

jsoniter

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

13,866
MIT
Used by 14
83Health
Tool npm

openapi-ts

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

5,450
MIT
Used by 14
76Health
Library PyPI

structlog

Structured, typed logging for Python built on plain functions and dictionaries instead of a bespoke logging DSL.

4,965
Other
Used by 14
92Health
Library Go

kin-openapi

A Go library for parsing, validating, converting, and working with OpenAPI 2.0, 3.0, 3.1, and 3.2 documents.

3,297
MIT
Used by 14
63Health
Library npm

@apidevtools/swagger-parser

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

1,210
MIT
Used by 14

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