Catalog crates.io

crates.io packages 27,549

Browse package metadata collected from public registries.

Source metadata
Name A–Z
PackageEcosystemLicenseLast observed Open
a14_cargo_io

A fun game where you guess what number the computer has chosen.

crates.ioMIT OR Apache-2.020 Oct 2026
a1800_codec

A clean room implementation of the GeneralPlus A1800 audio codec

crates.ioApache-2.020 Oct 2026
a1q

Terminal based messenger

crates.ioMIT OR Apache-2.020 Oct 2026
a2

A native, asynchronous Apple push notification client

crates.ioMIT20 Oct 2026
a2-memory-map

Database of Apple II memory addresses

crates.ioMIT20 Oct 2026
a20

A20 in rust

crates.ioMIT20 Oct 2026
a2a

A2A (Agent2Agent) Protocol - An open standard for enabling communication and interoperability between AI agent systems

crates.ioApache-2.020 Oct 2026
a2a-agents

Framework for building A2A Protocol agents with declarative configuration

crates.ioMIT20 Oct 2026
a2a-agents-common

Common utilities for building A2A Protocol agents

crates.ioMIT20 Oct 2026
a2a-ao

Rust SDK for the Agent-to-Agent (A2A) protocol — the open standard for agent interoperability (by AgentOven)

crates.ioApache-2.020 Oct 2026
a2a-ap2

AP2 (Agent Payments Protocol) extension for the A2A Protocol

crates.ioMIT20 Oct 2026
a2a_app_ports

Application layer ports for A2A servers (clean architecture)

crates.ioApache-2.020 Oct 2026
a2a-cli

Standalone A2A CLI client

crates.ioApache-2.020 Oct 2026
a2a-client

A2A Protocol Client - HTTP client for calling remote A2A agents

crates.ioMIT20 Oct 2026
a2a-client-lf

A2A v1 async client with protocol binding factory

crates.ioApache-2.020 Oct 2026
a2a-core

Core types for the A2A RC 1.0 agent-to-agent protocol

crates.ioApache-2.020 Oct 2026
a2a-generated

A2A-RS integration code generated from RDF ontology by ggen

crates.ioMIT20 Oct 2026
a2a-grpc

A2A v1 gRPC protocol binding for client and server

crates.ioApache-2.020 Oct 2026
a2a_http_client

A2A HTTP client - WASM default, native testing support

crates.ioApache-2.020 Oct 2026
a2a_http_server

A2A HTTP server - WASM default, native testing support

crates.ioApache-2.020 Oct 2026
a2a-lf

A2A v1 protocol types and core definitions

crates.ioApache-2.020 Oct 2026
a2a-llm

Provider-neutral LLM vocabulary, chat-completion providers (OpenAI-compatible, Gemini) and decision models

crates.ioMIT20 Oct 2026
a2a-mcp

Bidirectional integration between A2A Protocol and Model Context Protocol (MCP)

crates.ioMIT20 Oct 2026
a2a-pb

A2A v1 protobuf-generated types and conversion layer

crates.ioApache-2.020 Oct 2026

Coverage grows as collection continues. Counts describe collected records, not complete registry inventories.