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Best Image Annotation Software in 2026

Updated

In short: Roboflow is ranked #1 of 28 as of 4 October 2026, ahead of CVAT and Labellerr. The best-ranked option with a free plan is CVAT. The lowest first paid tier on this page is CVAT at $1.92/mo.

Labeling images for datasets or review calls for choices about annotation methods and the formats a tool can handle. Compare annotation types and image formats, then check dataset export and whether model-assisted labeling is listed. API access and team collaboration can help you assess shared workflows, while free plans and paid-from pricing add budget context. Roboflow and CVAT appear at the start of the ranking, followed by BasicAI and Label Studio. Consider what outputs and annotation approaches your work needs, and use the listed access and collaboration features to compare the options.

28 image annotation software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.

28ranked
6free plans on this page
$1.92/molowest paid tier
4 Oct 2026last checked

Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score

  1. 1 Roboflow iPhone + Android RecognisedPhone appDocumentedFree plan 7.9$39/mo Annotation types: bounding boxes, polygons, segmentation masks, classification labels, keypointsImage formats: JPG, PNG, WEBP, AVIF, BMPModel-assisted labeling: Yes
  2. 2 CVAT No phone app RecognisedPhone appDocumentedFree plan 6.4$1.92/mo Annotation types: Rectangle/bounding box, polygon, polyline, points, ellipse, cuboid, skeleton, tag, brush/maskImage formats: JPEG, PNG, BMP, GIF, PPM, TIFFModel-assisted labeling: Yes
  3. 3 Labellerr No phone app RecognisedPhone appDocumentedFree plan 6.4$833.25/mo Annotation types: Bounding box, polygon, polyline, keypoint, dot, classification, segmentation, object detectionImage formats: JPG, JPEG, PNG, BMP, TIFFModel-assisted labeling: Yes
  4. 4 Label Studio No phone app RecognisedPhone appDocumentedFree plan 6.3$99/mo Annotation types: rectangles, ellipses, keypoints, polygons, brush masks, image classificationModel-assisted labeling: Yes
  5. 5 Supervisely No phone app RecognisedPhone appDocumentedFree plan 6.3€199/mo Annotation types: rectangle, line/polyline, polygon, multipolygon, point, bitmap mask, graph/keypoints, alpha mask, 2D cuboidImage formats: .jpg, .jpeg, .mpo, .bmp, .png, .webp, .tiff, .tif, .jfif, .avif, .heic, .heifModel-assisted labeling: Yes
  6. 6 Ultralytics Platform No phone app RecognisedPhone appDocumentedFree plan 6.3$29/mo Annotation types: detection; instance segmentation; semantic segmentation; classification; pose estimation; oriented bounding boxesImage formats: JPEG; PNG; WebP; TIFF; HEIC; AVIF; BMP; JP2; DNG; MPOModel-assisted labeling: Yes
  7. 7 Labelbox No phone app RecognisedPhone appDocumentedFree plan 5.9 Annotation types: bounding boxes, segmentation masks, image classification, radio classificationImage formats: JPEGModel-assisted labeling: Yes
  8. 8 Pixano No phone app RecognisedPhone appDocumentedFree plan 5.8 Annotation types: bounding boxes, polygons, pixel masks, keypoints, cuboids, classification, trackingImage formats: JPEG, PNGModel-assisted labeling: Yes
  9. 9 BasicAI No phone app RecognisedPhone appDocumentedFree plan 5.7$550/mo Annotation types: object detection, object tracking, bounding boxes, polygons, polylines, keypoints, classification, semantic segmentation, instance segmentation, panorama segmentationImage formats: JPG, JPEG, PNG, BMP, TIFF, WebPModel-assisted labeling: Yes
  10. 10 Annota AI No phone app RecognisedPhone appDocumentedFree plan 5.4 Annotation types: bounding boxes; polygons; segmentation masksImage formats: PNG; JPEGModel-assisted labeling: Yes
  11. 11 Dataloop No phone app RecognisedPhone appDocumentedFree plan 5.4 Annotation types: bounding boxes, polygons, key points, cuboids, polylines, semantic segmentation, classification, tagging, hierarchical annotationImage formats: JPG, JPEG, PNG, TIFFModel-assisted labeling: Yes
  12. 12 FiftyOne No phone app RecognisedPhone appDocumentedFree plan 5.4 Annotation types: bounding boxes; polygons; segmentation masks; classifications; polylines; SAM2 click-to-segment instance segmentationImage formats: JPEG; PNG; BMPModel-assisted labeling: Yes
  13. 13 Labelme No phone app RecognisedPhone appDocumentedFree plan 5.4 Annotation types: polygons, rectangles, oriented rectangles, circles, lines, points, masks, rich attributesImage formats: PNG, JPEG, BMP, TIFFModel-assisted labeling: Yes
  14. 14 SuperAnnotate No phone app RecognisedPhone appDocumentedFree plan 5.4 Annotation types: classification, key-point, bounding box, polygon, polyline, tiled imagery, cuboid, skeletonImage formats: .jpg, .jpeg, .png, .gif, .bmp, .webp, .svgModel-assisted labeling: Yes
  15. 15 V7 Darwin No phone app RecognisedPhone appDocumentedFree plan 5.4 Annotation types: Polygon; bounding box; tag; skeleton; keypoint; line; ellipse; mask; attributes; text; directional vector; instance IDImage formats: .jpg, .jpeg, .webp, .png, .bmp, .svs, .tif, .tiff, .qtiff, .dcm, .rvg, .nii, .nii.gz, .ndpiModel-assisted labeling: Yes
  16. 16 Annotate-Lab No phone app RecognisedPhone appDocumentedFree plan 5.3 Annotation types: Configured region annotations, including polygon and bounding-box regions; circle tool shown in exampleModel-assisted labeling: Yes
  17. 17 MakeSense.ai No phone app RecognisedPhone appDocumentedFree plan 5.3 Annotation types: point, line, rectangle, polygon, labelModel-assisted labeling: Yes
  18. 18 segmenteverygrain No phone app RecognisedPhone appDocumentedFree plan 5.3 Annotation types: instance segmentation masks; polygon editing; foreground/background point prompts; grain classification labelsImage formats: JPEG; PNGModel-assisted labeling: Yes
  19. 19 Vailabel Studio No phone app RecognisedPhone appDocumentedFree plan 5.3 Annotation types: bounding boxes, polygons, points, lines, circles, free-draw, SAM smart-segmentModel-assisted labeling: Yes
  20. 20 VGG Image Annotator No phone app RecognisedPhone appDocumentedFree plan 5.3 Annotation types: rectangle, circle, ellipse, point, polygon, polylineModel-assisted labeling: No
  21. 21 Xtreme1 No phone app RecognisedPhone appDocumentedFree plan 5.3 Annotation types: bounding box, polygon, polyline, classificationImage formats: JPG, PNGModel-assisted labeling: Yes
  22. 22 Draw Attention No phone app RecognisedPhone appDocumentedFree plan 5.2 Annotation types: polygon, rectangle, circle, hotspotImage formats: PNG, JPG, GIF
  23. 23 Kili Technology No phone app RecognisedPhone appDocumentedFree plan 5.2 Annotation types: bounding boxes, polygons, semantic segmentation, pose estimation, named entity recognition, classificationImage formats: PNG, JPEG/JPG, GIF, BMP, WebP, ICO, JP2, NTF, TIFF/TIF, GeoTIFFModel-assisted labeling: Yes
  24. 24 Segments.ai No phone app RecognisedPhone appDocumentedFree plan 5.2 Annotation types: segmentation, bounding box, polygon, polyline, keypoint, cuboidImage formats: jpeg, png, bmpModel-assisted labeling: Yes
  25. 25 Encord No phone app RecognisedPhone appDocumentedFree plan 5.1 Annotation types: bounding boxes, rotatable bounding boxes, polygons, bitmasks, polylines, keypoints, primitives, classificationsModel-assisted labeling: Yes

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Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.

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Questions about this list

Which image annotation software is ranked first on Samsung Mobile US Press?

Roboflow is ranked #1 of 28 with a score of 7.9. CVAT is second and Labellerr third.

How many of these have a free plan?

6 of the 25 on this page publish a free plan on their own pricing pages.

Which is the cheapest paid option?

On this page, CVAT has the lowest first paid tier we found: $1.92/mo.

How is this list ranked?

Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.

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