What is Nextflow used for?

Nextflow is a workflow language and engine for building scalable, portable and reproducible data pipelines, widely used in bioinformatics. It is a good fit for bioinformatics analysis pipelines, and moving research workflows between cluster and cloud.

Is Nextflow open source?

Yes. Nextflow is open source under the Apache-2.0 licence. Its source code is on GitHub at nextflow-io/nextflow and is written mainly in Groovy.

Yes. Nextflow is open source, so the software itself is free to use. A managed cloud version is also available.

Can I self-host Nextflow?

Yes. Nextflow can be self-hosted on your own server or infrastructure.

What are some alternatives to Nextflow?

Similar open-source tools in the Data Pipelines & ETL category include Pachyderm, Azkaban and Airflow. SaaS products in the same category include Alation, Alteryx and Amazon EMR.

Is Nextflow actively maintained?

Yes. The most recent commit to Nextflow was on 2 October 2026, and the latest release is v26.04.6, published on 9 July 2026. The project has 3.5k stars on GitHub.

Nextflow: open-source data pipelines & ETL

About Nextflow

Nextflow is a workflow system for building scalable, portable and reproducible computational pipelines. It is based on the dataflow programming model, which simplifies writing parallel and distributed pipelines by letting you concentrate on how data and computation flow rather than on coordination details. The project's topics highlight bioinformatics and reproducible research as core areas.

The same pipeline can run on a local machine, on HPC schedulers such as Slurm and SGE, on AWS Batch, Azure Batch and Google Cloud Batch, or on Kubernetes. Software dependencies can be managed with Conda, Spack, Docker, Podman, Singularity and other tools, so a workflow can be moved between environments without rewriting it. The engine is implemented in Groovy.

Installation is a single command that produces an executable, and it is also available through Bioconda. The community around it includes a forum, Slack, regular meetings and the nf-core project, which collects high-quality shared workflows. Nextflow is released under the Apache 2.0 license and is developed by Seqera, which also offers a managed way to run it.

Key features

Dataflow-based pipeline language
Runs on local, HPC, cloud and Kubernetes backends
Container support for Docker, Podman and Singularity
Conda and Spack dependency management
Reproducible, portable workflow definitions
Community pipelines through nf-core

Good fit for

→Bioinformatics analysis pipelines
→Moving research workflows between cluster and cloud

Built with: Groovy; Docker
Tags: workflow-engine; pipeline; bioinformatics; hpc; reproducible-research; dataflow; groovy; kubernetes

Nextflow: questions and answers

What is Nextflow used for?: Nextflow is a workflow language and engine for building scalable, portable and reproducible data pipelines, widely used in bioinformatics. It is a good fit for bioinformatics analysis pipelines, and moving research workflows between cluster and cloud.
Is Nextflow open source?: Yes. Nextflow is open source under the Apache-2.0 licence. Its source code is on GitHub at nextflow-io/nextflow and is written mainly in Groovy.
Is Nextflow free?: Yes. Nextflow is open source, so the software itself is free to use. A managed cloud version is also available.
Can I self-host Nextflow?: Yes. Nextflow can be self-hosted on your own server or infrastructure.
What are some alternatives to Nextflow?: Similar open-source tools in the Data Pipelines & ETL category include Pachyderm, Azkaban and Airflow. SaaS products in the same category include Alation, Alteryx and Amazon EMR.
Is Nextflow actively maintained?: Yes. The most recent commit to Nextflow was on 2 October 2026, and the latest release is v26.04.6, published on 9 July 2026. The project has 3.5k stars on GitHub.