tooz
Coordination library for distributed systems.
Decision gist · record as of 2026-08-14
Yes. Tooz is production-stable, actively maintained, has low install friction, carries a permissive Apache-2.0 license, and solves a real problem for distributed systems. No known vulnerabilities. Install it if you're building distributed applications that need coordination primitives.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.11 or later; a running coordination backend service (Zookeeper, etcd, etc.) is needed for actual operation.
- Low install friction with a pure-Python wheel.
- Active maintenance with a release 15 days ago.
License · maintenance · safety
Apache-2.0 (permissive) — Apache-2.0 permissive license allows use in commercial and proprietary projects with minimal restrictions; you must include a copy of the license and note any modifications.
last release 2026-07-30 (15 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 158,649 downloads/mo, #10,715 on PyPI
Alternatives
Verify before relying
pip install tooz
from tooz import coordination
coord = coordination.get_coordinator('zookeeper://localhost')
coord.start()- Which backend coordination services are supported by version 9.0.1
- Whether all eight runtime dependencies are required or some are optional for specific backends
- What coordination primitives beyond group membership, locks, and leader election are available
What it is and what it does
Tooz is a coordination library that abstracts away the complexity of building distributed applications by providing a unified API for common distributed primitives. Instead of writing custom code to handle group membership, distributed locks, and leader election, developers use Tooz's consistent interface to these operations, which can be backed by different coordination services. The library is production-stable and actively maintained, supporting Python 3.11 through 3.14.
The package is built on top of established dependencies including stevedore, msgpack, fasteners, tenacity, futurist, oslo.utils, and oslo.serialization. It's designed for teams building distributed systems who need reliable coordination without reinventing these patterns for each new service.
Use it for
- Implement distributed locks across multiple application instances to prevent concurrent access to shared resources
- Manage group membership to track which nodes are active in a distributed cluster
- Elect a leader node to coordinate work or manage state in a distributed system
- Build distributed task queues or job schedulers that need coordination across workers
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
Tooz is production-stable, actively maintained, has low install friction, carries a permissive Apache-2.0 license, and solves a real problem for distributed systems. No known vulnerabilities. Install it if you're building distributed applications that need coordination primitives.
Install
tooz on PyPI
Before you install
Low install friction with a pure-Python wheel. Active maintenance with a release 15 days ago. Eight runtime dependencies are all established libraries.
Requires Python 3.11 or later; a running coordination backend service (Zookeeper, etcd, etc.) is needed for actual operation.
License in practice
Apache-2.0 permissive license allows use in commercial and proprietary projects with minimal restrictions; you must include a copy of the license and note any modifications.
Quickstart
pip install tooz
from tooz import coordination
coord = coordination.get_coordinator('zookeeper://localhost')
coord.start()Verify before relying
- Which backend coordination services are supported by version 9.0.1
- Whether all eight runtime dependencies are required or some are optional for specific backends
- What coordination primitives beyond group membership, locks, and leader election are available
Package facts
| License | Apache-2.0 permissive |
| Python support | Supports the current Python release >=3.11 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 8 packagesstevedorevoluptuousmsgpackfastenerstenacityfuturistoslo.utilsoslo.serialization |
| Maintenance | Actively maintained 15 days since the last release |
| First released | |
| Downloads | 158,649 / month, #10,715 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: ConsoleIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseOperating System :: POSIX :: LinuxProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: System :: Distributed ComputingTyping :: Typed |
Evidence: tooz-9.0.1-py3-none-any.whl
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