What is FiftyOne used for?

FiftyOne is an open-source tool for building high-quality datasets and computer vision models, with dataset visualization, curation, and model evaluation built in. It is a good fit for building high-quality datasets for computer vision, evaluating and analyzing model predictions, and annotating and curating datasets.

Is FiftyOne open source?

Yes. FiftyOne is open source under the Apache-2.0 licence. Its source code is on GitHub at voxel51/fiftyone and is written mainly in TypeScript.

Yes. FiftyOne is open source, so the software itself is free to use.

Can I self-host FiftyOne?

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

What is FiftyOne an alternative to?

FiftyOne is an open-source alternative to Roboflow. Other open-source alternatives to Roboflow include Platform, Label Studio and CVAT.

Is FiftyOne actively maintained?

Yes. The most recent commit to FiftyOne was on 14 October 2026, and the latest release is v1.22.1, published on 29 September 2026. The project has 11k stars on GitHub.

FiftyOne: open-source alternative to Roboflow

About FiftyOne

FiftyOne is an open-source tool for building high-quality datasets and computer vision models. It includes dataset visualization, curation, and model evaluation capabilities. The tool supports various domains including agriculture, autonomous vehicles, healthcare, manufacturing, and robotics.

Key features

Dataset visualization and curation
Model evaluation
Data annotation
Integrations and plugins
Support for 2D and 3D datasets
Embedding visualization

Good fit for

Building high-quality datasets for computer vision
Evaluating and analyzing model predictions
Annotating and curating datasets

Built with: TypeScript tools; Python tools
Tags: computer vision; dataset curation; model evaluation; annotation; visualization; open source

FiftyOne: questions and answers

What is FiftyOne used for?: FiftyOne is an open-source tool for building high-quality datasets and computer vision models, with dataset visualization, curation, and model evaluation built in. It is a good fit for building high-quality datasets for computer vision, evaluating and analyzing model predictions, and annotating and curating datasets.
Is FiftyOne open source?: Yes. FiftyOne is open source under the Apache-2.0 licence. Its source code is on GitHub at voxel51/fiftyone and is written mainly in TypeScript.
Is FiftyOne free?: Yes. FiftyOne is open source, so the software itself is free to use.
Can I self-host FiftyOne?: Yes. FiftyOne can be self-hosted on your own server or infrastructure.
What is FiftyOne an alternative to?: FiftyOne is an open-source alternative to Roboflow. Other open-source alternatives to Roboflow include Platform, Label Studio and CVAT.
Is FiftyOne actively maintained?: Yes. The most recent commit to FiftyOne was on 14 October 2026, and the latest release is v1.22.1, published on 29 September 2026. The project has 11k stars on GitHub.