# zstackio/zstack

ZStack - the open-source IaaS software http://zstack.org (国内用户请至 http://zstack.io)

Repository: https://github.com/zstackio/zstack
Canonical: https://ross.abutalabs.com/products/zstack
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2026-08-26T18:17:07+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 4169, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1394, forks 398 (observed 2026-08-28T04:04:36.415720+00:00)

## What it is
ZStack is an open-source IaaS (Infrastructure as a Service) platform for automating datacenters, managing compute, storage, and networking resources entirely through APIs. It offers a web UI and CLI for building private or public clouds, scaling from a single-machine POC to hundreds of thousands of physical servers.

## Use cases
- build a private cloud on my own hardware
- open-source alternative to OpenStack
- manage virtual machines and storage via API
- automate datacenter compute and networking
- set up a quick IaaS POC on one Linux machine
- run a scalable public cloud platform

## When to choose
- you want a download-and-run IaaS with no scattered configurations or third-party service dependencies
- you need extreme scalability (hundreds of thousands of hosts, millions of VMs) from a single management node
- you prefer API-driven, software-defined datacenter management with a plugin architecture

## When to avoid
- you only need container orchestration rather than VM-based IaaS (use Kubernetes instead)
- you want a lightweight desktop or single-VM hypervisor tool
- your team is committed to an existing OpenStack or VMware deployment

## Facets
- artifact type: application
- maturity: active
- function: cloud, api-framework, web-framework, plugin-system, workflow-automation, monitoring, self-hosted
- domain: cloud-computing, infrastructure-as-code, self-hosted, microservices
- platform: jvm, self-hosted
- tags: iaas, software-defined-datacenter, vm-management, openstack-alternative, private-cloud, hypervisor-management, virtualization, devops, linux, web-server, docker

## Member repositories
- zstackio/zstack (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:36.415720+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:39:27.665967+00:00, confidence not recorded.
  - readme: https://github.com/zstackio/zstack (fetched 2026-08-28T04:04:36.415720+00:00, sha 6ecb15c05522)
- Data as of 2026-08-30T08:39:29.467469+00:00.