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

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
73Health
Library Cargo

zeroize

Securely clear secrets from memory using a simple trait that resists compiler optimization

670
Other
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
88Health
Framework npm

Mastra Core

The TypeScript framework for building AI agents, workflows, and RAG apps with unified access to 40+ LLM providers.

28,036
Apache 2.0
Used by 8
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
69Health
Tool npm

@vitejs/plugin-basic-ssl

A Vite plugin that generates a self-signed certificate so your dev and preview servers can run over HTTPS with zero setup.

516
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
55Health
Library npm

superagent

A small, progressive HTTP request library for Node.js and browsers with a single fluent, chainable API on both platforms.

16,637
MIT
Used by 7
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
72Health
Library Cargo

ureq

A simple, safe, blocking HTTP client for Rust with minimal dependencies.

2,190
Apache 2.0
Used by 7
46Health
Library npm

flat

Flattens nested JavaScript objects into dot-delimited keys and unflattens them back, with a bundled CLI.

1,815
BSD 3
Used by 7
55Health
Library npm

rss-parser

Lightweight RSS and Atom feed parser for Node.js and the browser that turns XML feeds into plain JavaScript objects

1,528
MIT
Used by 7
50Health
Library npm

follow-redirects

A drop-in replacement for Node's http and https modules that transparently follows redirects with zero runtime dependencies.

580
MIT
Used by 7
66Health
Library Cargo

secrecy

Rust wrapper types that keep secrets out of logs, debug output, and Clone/Copy, and securely wipe them from memory on drop

579
Other
Used by 7
74Health
Library Go

certmagic

Automatic HTTPS for Go programs — the production-grade ACME client library that powers Caddy, obtaining and renewing TLS certificates with zero manual cert management.

5,598
Apache 2.0
Used by 6
49Health
Library npm

json2csv

Convert JSON arrays into CSV strings and files with configurable fields, formatters, and streaming parsers for Node.js.

2,719
MIT
Used by 6
47Health
Library npm

csv-parser

A zero-dependency streaming CSV parser for Node.js that converts CSV into JSON at high speed.

1,503
MIT
Used by 6
44Health
Library npm

json-logic-js

A lightweight JavaScript engine for building, storing, and executing JsonLogic rules across the front-end, back-end, and database.

1,480
MIT
Used by 6
62Health
Library Go

jsonschema

A compliant, dependency-light Go library for compiling and validating JSON Schema across five draft versions, with rich hierarchical errors.

1,268
Apache 2.0
Used by 6
37Health
Library npm

jmespath.js

Query and transform JSON data in JavaScript with a single declarative expression string

847
Apache 2.0
Used by 6

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