Xtreme1

At a glance

• Editor score
  7.3 / 10
• Pricing
  Open source
• Best for
  Open-source teams handling 2D and 3D data
• Paid from
  Free
• Model-assisted labeling
  Yes
• Facts checked
  20 Sep 2026

• Where it wins

  • Supports 2D image, 3D LiDAR, and camera-fusion annotation
  • AI-assisted pre-labeling and interactive segmentation support
  • COCO import/export plus a bearer-token dataset API

• Where it doesn't

  • Local deployment uses Docker Compose and requires setup
  • Image formats are limited to JPG and PNG
  • The listed integration set is focused on four model projects

Our verdict on Xtreme1

Xtreme1 is an open-source platform for annotating, curating, and managing multimodal training data. It is aimed at machine-learning and computer-vision teams working on object detection, segmentation, classification, and related dataset-development tasks. Annotation options include bounding boxes, polygons, polylines, classification, configurable ontology classes, and attributes. It also covers 3D LiDAR and 2D/3D camera-fusion datasets, making it a fit for teams whose work extends beyond standard image labeling.

Its feature set is broad for an open-source annotation platform. AI-assisted pre-labeling and interactive segmentation models can support model-assisted workflows, while data management, quality monitoring, labeling-error correction, and model-result visualization address later stages of dataset development. Teams can upload datasets from local drives or URLs, and COCO import and export are supported alongside JSON and the Xtreme1 annotation format. The bearer-token API covers dataset management, annotation, export, and model prediction, with integrations listed for YOLOR, RITM, OpenPCDet, and AB3DMOT.

Deployment is oriented toward teams prepared to manage the platform locally: the product can be deployed with Docker Compose on Linux, Windows, or macOS, and self-hosted use is supported alongside web access and an API. That makes Xtreme1 a practical choice for organizations prioritizing open-source control and multimodal annotation in their own environments. It is less suited to buyers seeking a narrowly focused image-only tool with a simpler hosted rollout, or teams that need a broader named integration ecosystem than the listed model projects provide.

Your product? Our editors can test Xtreme1 in depth and publish a review, labelled as paid · from $149/mo →

Xtreme1 pricing

Xtreme1 fact sheet

Xtreme1 integrations

Xtreme1 lists 4 integrations on its own site.

• YOLOR
• RITM
• OpenPCDet
• AB3DMOT

Alternatives to Xtreme1

• PPixanoA flexible open-source choice for teams annotating 2D and 3D vision datasets.9.0
• CVATA broad CV workflow spanning manual, AI-assisted, collaborative, and programmatic annotation.8.9
• Label StudioFlexible image annotation with open-source deployment, AI assistance, and broad exports.8.8

See all Xtreme1 alternatives →

Featured on iTechGuides

Xtreme1 is listed in our Image Annotation Software directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/xtreme1/"><img src="https://www.itechguides.com/best/badge/xtreme1.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update