---
id: robotframework-pabot
version: "5.2.2"
license: Apache License, Version 2.0
license_treatment: permissive
maintenance: active
---

# robotframework-pabot — Parallel test runner for Robot Framework

License: permissive · Maintenance: active · Downloads: 909.3K/mo

## What it is and what it does

Pabot is a command-line wrapper around Robot Framework that distributes test execution across multiple parallel processes. Instead of running all tests sequentially in a single Robot Framework instance, Pabot splits the work—either at suite level (default) or test level—and coordinates the results. It includes an optional PabotLib remote server for locking and resource sharing between parallel executors, and supports advanced features like sharding across machines, custom execution ordering, and artifact collection from parallel runs.

The package is designed for teams running large Robot Framework test suites where sequential execution becomes a bottleneck. It handles output file aggregation, supports all standard Robot Framework command-line options, and can run the same tests with different argument files in parallel. Since version 5.2.0, it has no external dependencies beyond Robot Framework itself, making installation and maintenance straightforward.

Use it for:

- Reduce CI/CD pipeline duration by running a large Robot Framework suite across multiple CPU cores in parallel.
- Distribute acceptance tests across multiple machines using the --shard option for load-balanced test execution.
- Run the same test suite with different configurations (e.g., different browsers or environments) in parallel using multiple argument files.
- Lock shared resources (databases, test data) during parallel execution using PabotLib to prevent test interference.
- Collect and merge screenshots, videos, or other artifacts from parallel test runs into a single consolidated report.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Pabot splits Robot Framework test execution across multiple parallel processes to reduce total test runtime, supporting suite-level or test-level parallelization with optional resource locking and distribution.

Yes. Pabot is production-stable (Development Status 5), actively maintained, has no known vulnerabilities, and solves a real problem for Robot Framework users with large test suites. The single dependency and permissive license remove friction. Install it if you run Robot Framework tests that take significant time and want to parallelize them; skip it only if your test suite is already fast or you have no multi-core resources available.

## Install

pip install robotframework-pabot
uv add robotframework-pabot
poetry add robotframework-pabot

## Installing robotframework-pabot

Before you install: Low friction: single runtime dependency (robotframework), pure-Python implementation as of version 5.2.0 with natsort replaced. Active maintenance with recent releases; repository shows 508 stars and last commit on 2026-06-11.

License in practice: Apache License 2.0 (permissive) places no significant restrictions on use, modification, or distribution in commercial or private projects.

Quickstart:

pip install robotframework-pabot

pabot [path to tests]

# Or split at test level:
pabot --testlevelsplit [path to tests]

Requires Python 3.6 or later and an existing Robot Framework installation.

Verify before relying:

- Whether PabotLib remote server overhead or latency impacts speedup on small test suites or single-machine runs.
- Actual parallel speedup factor under typical workloads (depends heavily on test suite structure and I/O patterns).
- Whether optional robotframework-stacktrace dependency is recommended for production use.

## Package facts

- License: Apache License, Version 2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 909.3K/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

parallel robot framework test runner, robot framework parallel execution, split robot tests across processes, robot framework test parallelization, pabot parallel test executor, robot framework performance speedup, distributed robot test execution, parallel-execution, test-automation, robot-framework

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