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    A3S OS / COLLECTIVE INTELLIGENCE

    An AI-native operatingsystem for fluid and crystal intelligence.

    A3S OS connects sessions, models, tools, memory, workflows, isolated execution, and Cloud operations through explicit contracts. Fluid intelligence helps teams form new solutions in context; crystal intelligence turns verified judgment into reusable organizational capability.

    See the intelligence loop
    FLUID → CRYSTAL / ORGANIZATIONAL INTELLIGENCE

    Let fluid intelligence become a shared operating memory.

    Fluid intelligence helps a team combine people, agents, data, tools, and compute around a new problem. Crystal intelligence preserves the judgment that worked, with its context, evidence, and ownership, so the next team can call it again.

    01 / FLUID INTELLIGENCE

    Discover in context.

    Start from the task and its constraints. Compose the right people, agents, tools, data, and compute, then test a new path inside explicit policy boundaries.

    Sense · Compose · Test · Return
    02 / CRYSTAL INTELLIGENCE

    Make good judgment reusable.

    Keep the context and evidence attached to a decision. Turn what worked into searchable memory, a capability, or a durable workflow with version, ownership, and a clear way to reuse it.

    Context · Evidence · Version · Reuse
    ECOSYSTEM DIRECTORY / 35 PROJECTS

    Build the layer your work needs.

    A3S OS keeps each capability in an owned project with a clear contract. Search by responsibility or filter by layer, then continue to its source, current version, and delivery stage.

    9 PROJECT SITES

    Open the projects that already have a public page.

    Each destination is maintained by its product repository. Previews come from the live site or its current build.

    ONLINE

    A3S Cloud

    A self-hosted control plane for A3S nodes, operations, and OCI deployments.

    Open site
    ONLINE

    A3S Code

    An async agent runtime with Rust, Node.js, Python, and Go SDKs.

    Open site
    ONLINE

    A3S Flow

    Provides a recoverable workflow engine for Agents, tools, approvals, and child workflows.

    Open site
    ONLINE

    A3S Office

    Reads, edits, and creates Office files through the CLI, MCP, and Skill.

    Open site
    ONLINE

    A3S Power

    Runs models locally behind an OpenAI-compatible API.

    Open site
    ONLINE

    A3S Box

    Runs OCI containers in MicroVMs with a Docker-like command line.

    Open site
    ONLINE

    A3S Use

    Installs, verifies, and manages agent capability packages, with built-in Browser and OCR routes.

    Open site
    ONLINE

    A3S UI

    The shared design system for A3S workspaces, document tools, and operations consoles.

    Open site
    ONLINE

    A3S Gateway

    Routes AI requests locally across HTTP, WebSocket, gRPC, TCP, and UDP.

    Open site
    COMPLETE PROJECT DIRECTORY / 35

    One directory for all 35 projects.

    Search by name or responsibility, or filter by layer. Each entry shows its role, core capabilities, delivery stage, current version or channel, and source.

    35 projectsA3S / ECOSYSTEM.INDEX

    These stages describe how a project can be used today; they are not a feature-completion score. Versions and stages were checked against public releases, READMEs, and roadmaps on 2026-09-05.

    • BuildingThe main usage path is still under construction and is not yet a public entry point.
    • ExperimentalRequires explicit opt-in or a qualified environment; key release gates remain open.
    • PreviewA public usage path exists, but interfaces or compatibility may still change.
    • ReleasedA maintained public release or service exists; individual features may still be preview or experimental.
    01Products & apps
    CL

    CLI

    Installs and manages A3S components and provides the Code terminal.

    • a3s CLI
    • Host Policy
    • Code Runtime
    Delivery stage
    Previewv0.12.5
    View project
    02Products & apps
    CO

    Code

    An async agent runtime with Rust, Node.js, Python, and Go SDKs.

    • Hosts & SDKs
    • Agent
    • AgentSession
    Delivery stage
    Releasedv8.2.0
    View projectSource
    03Products & apps
    DE

    Desktop

    Runs local A3S Code through a native desktop workbench.

    • React Workbench
    • Desktop Policy
    • Loopback Contract
    Delivery stage
    Previewv0.1.0
    View project
    04Products & apps
    WI

    Windhole

    Runs A3S Bench evaluations locally and shows each run and result.

    • Bench Catalog
    • Hangar Roster
    • Loopback Bridge
    Delivery stage
    Previewmain
    View project
    05Products & apps
    BO

    Box

    Runs OCI containers in MicroVMs with a Docker-like command line.

    • Entry Points
    • ExecutionManager
    • Policy Resolver
    Delivery stage
    Releasedv3.2.3
    View projectSource
    06Products & apps
    BE

    Bench

    Runs repeatable agent evaluations from fixed inputs and judge rules.

    • Task + Candidate
    • Immutable Locks
    • Runtime Provider
    Delivery stage
    Previewv0.1.2
    View project
    07Products & apps
    SE

    Search

    Searches multiple sources, ranks and deduplicates results, and can render pages.

    • Providers & Engines
    • ProviderEngine
    • Search Orchestrator
    Delivery stage
    Releasedv3.1.1
    View project
    08Products & apps
    BR

    Browser

    Runs browser automation for agents in an isolated process.

    • SDK Caller
    • PageRenderer
    • Typed Library
    Delivery stage
    Previewv0.3.2
    View project
    09Products & apps
    OC

    OCR

    Extracts text from images while recording the source and model used.

    • Bounded Image
    • Evidence Envelope
    • OcrProvider
    Delivery stage
    Previewv0.5.0
    View project
    10Products & apps
    US

    Use

    Installs, verifies, and manages agent capability packages, with built-in Browser and OCR routes.

    • Umbrella CLI
    • Use Host
    • Built-in Routes
    Delivery stage
    Previewv0.3.2
    View projectSource
    11Products & apps
    OF

    Office

    Reads, edits, and creates Office files through the CLI, MCP, and Skill.

    • Host Product
    • Typed Contracts
    • Browser Plane
    Delivery stage
    Previewv0.3.0
    View projectSource
    12Products & apps
    SC

    Science

    Provides Skills, data services, and compute tools for scientific research.

    • Code / Use
    • Skills & MCP
    • Data Services
    Delivery stage
    Previewmain
    View project
    13Products & apps
    CL

    Cloud

    A self-hosted control plane for A3S nodes, operations, and OCI deployments.

    • Web / API / CLI
    • Boot API
    • DDD + Durable Core
    Delivery stage
    Experimentalmain
    View projectSource
    14Products & apps
    SI

    Site

    The bilingual A3S ecosystem project index.

    • Rspress Routes
    • Locale Builds
    • Homepage Content
    Delivery stage
    Releasedlive
    View projectSource
    15Runtime & data
    RU

    Runtime

    Runs short tasks and long-lived services through replaceable providers.

    • Caller Policy
    • Runtime Contract
    • Managed Lifecycle
    Delivery stage
    Previewv0.3.0
    View project
    16Runtime & data
    OC

    OCI Runtime

    Manages OCI workloads and isolation on macOS, Linux, and Windows.

    • Consumers & SDK
    • OciRuntimeService
    • Durable Lifecycle
    Delivery stage
    Experimentalv0.2.0
    View project
    17Runtime & data
    FL

    Flow

    Provides a recoverable workflow engine for Agents, tools, approvals, and child workflows.

    • FlowEngine
    • Event Store
    • React / Vue
    Delivery stage
    Releasedv1.0.0
    View projectSource
    18Runtime & data
    EV

    Event

    Publishes, subscribes to, and stores A3S events with replaceable backends.

    • Publisher
    • EventBus
    • EventProvider
    Delivery stage
    Previewv0.3.0
    View project
    19Runtime & data
    LA

    Lane

    Schedules async work by concurrency limit and priority, with retries after failure.

    • Typed Command
    • QueueManager
    • Priority Scheduler
    Delivery stage
    Previewv0.5.1
    View project
    20Runtime & data
    ME

    Memory

    Stores, searches, deduplicates, and prunes agent memory.

    • MemoryItem
    • MemoryStore
    • Dedupe + Relevance
    Delivery stage
    Previewv0.1.4
    View project
    21Runtime & data
    OR

    ORM

    Builds parameterized SQL and runs it asynchronously on SQLite and PostgreSQL.

    • Schema + Expressions
    • Immutable Query AST
    • Dialect Compiler
    Delivery stage
    Previewv0.2.0
    View project
    22Runtime & data
    CO

    Common

    Shared privacy, tool, path, and transport types for A3S crates.

    • A3S Crates
    • Privacy Types
    • Tool + Path Types
    Delivery stage
    Previewv0.1.1
    View project
    23Services & interfaces
    BO

    Boot

    Builds async services from modules and adapters.

    • Modules + Providers
    • Controllers / Gateways
    • Neutral Pipeline
    Delivery stage
    Previewv0.1.3
    View project
    24Services & interfaces
    GA

    Gateway

    Routes AI requests locally across HTTP, WebSocket, gRPC, TCP, and UDP.

    • Entrypoint + TLS
    • Router
    • Middleware Pipeline
    Delivery stage
    Releasedv1.0.13
    View projectSource
    25Services & interfaces
    PO

    Power

    Runs models locally behind an OpenAI-compatible API.

    • OpenAI API
    • Server Layer
    • Backend Registry
    Delivery stage
    Previewv0.9.0
    View projectSource
    26Services & interfaces
    AH

    AHP

    Lets the host inspect and decide on key agent actions before they run.

    • Agent Event
    • Transport
    • Harness
    Delivery stage
    Releasedv2.4.0
    View project
    27Services & interfaces
    AC

    ACL

    Reads and writes A3S Agent Configuration Language files.

    • ACL Source
    • Lexer + Parser
    • Typed AST
    Delivery stage
    Previewv0.3.0
    View project
    28Services & interfaces
    TU

    TUI

    Builds terminal interfaces and reusable components in Rust.

    • Terminal Events
    • Model + Update
    • Layout + View
    Delivery stage
    Previewv0.1.14
    View project
    29Services & interfaces
    GU

    GUI

    Builds native AppKit, WinUI, and GTK interfaces from Rust components.

    • RSX / Semantic UI
    • Reducer Runtime
    • Native IR
    Delivery stage
    Previewmain
    View project
    30Services & interfaces
    WE

    WebView

    Opens agent-provided RemoteUI safely in a native window.

    • Code / Host UI
    • Trusted Runtime URL
    • Auth Bootstrap
    Delivery stage
    Previewv0.1.5
    View project
    31Services & interfaces
    UI

    UI

    The shared design system for A3S workspaces, document tools, and operations consoles.

    • Product Surfaces
    • Workbench Patterns
    • Semantic Contracts
    Delivery stage
    Previewv0.2.1
    View projectSource
    32Services & interfaces
    OB

    Observer

    Uses eBPF to record agent process, file, DNS, and network activity.

    • eBPF Probes
    • Collector
    • Resolver + Classifier
    Delivery stage
    Previewv0.11.0
    View project
    33Services & interfaces
    SE

    Sentry

    Evaluates Observer events and enforces agent runtime policy.

    • Observer Events
    • L1 Rules
    • L2 / L3 / SAE
    Delivery stage
    Previewv0.8.0
    View project
    34Services & interfaces
    UP

    Updater

    Downloads, verifies, and switches A3S versions, with rollback after a failed update.

    • Release Source
    • Manifest + Signature
    • Asset Selection
    Delivery stage
    Releasedv0.3.0
    View project
    35Services & interfaces
    HO

    Homebrew Tap

    Installs and updates released A3S commands through Homebrew.

    • Release Archives
    • Formula / Cask
    • Tap Repository
    Delivery stage
    Releasedlive
    View project
    SYSTEM RULES / 05

    Five rules that let fluid intelligence crystallize safely.

    They define where decisions are made, what survives a restart, and which component is responsible when work fails or a contribution is reused.

    01

    Policy stays with the host

    CLI, Bench, and Cloud choose the active models, tools, permissions, and workflows.

    02

    Backends stay replaceable

    Drivers, providers, stores, executors, and adapters meet through explicit interfaces.

    03

    State survives restarts

    Sessions, workflow runs, runtime units, and evaluation results are written beyond process memory.

    04

    Requirements are named

    Accounts, browsers, brokers, hypervisors, databases, and models are configured rather than assumed.

    05

    Policy is not enforcement

    The host decides what is allowed; the sandbox or infrastructure driver enforces that decision.

    QUICKSTART / LOCAL-FIRST

    Start with one local Code session.

    A3S OS starts locally. Add memory, capabilities, orchestration, isolation, inference, or Cloud only when the work needs them.

    See all install optionsmacOS · Linux · Windows
    zsh / bash
    curl --proto '=https' --tlsv1.2 -LsSf \
  https://raw.githubusercontent.com/A3S-Lab/a3s/main/install.sh | sh

cd /path/to/project
a3s code
    installer readyzsh / bash
    USE ONLY WHAT YOU NEED

    Every AI-native organization needs to build its own crystal intelligence brain.

    A3S OS keeps authority boundaries explicit while turning verified contributions into context-rich, reusable team capability.

    View source