Best Image Annotation Software in 2026
Updated
28 image annotation software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
28ranked
0free plans on this page
5 Oct 2026last checked
Input list Image Annotation Software 3 channels on this page · 13 of 24 spec lines stated by the makers
Ch Tool Free planPaid fromAnnotation typesImage formatsModel-assisted labelingDataset exportTeam collaborationAPI access Spec sheet Score
26 Keylabs Free planNoPaid fromnot statedAnnotation typesBounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotationImage formatsnot statedModel-assisted labelingYesDataset exportKeylabs ZIP archive with JSON and PNG masks; COCO; YOLO; CSV filename mappingTeam collaborationYesAPI accessYes 6/8spec lines stated 5.7
27 RectLabel Free planNoPaid fromnot statedAnnotation typesboxes, rotated boxes, polygons, cubic Bézier curves, lines, points, pixels, keypoints, image labelsImage formatsnot statedModel-assisted labelingYesDataset exportYOLO, COCO JSON, Create ML JSON, DOTA, CSV, mask images, classification foldersTeam collaborationnot statedAPI accessnot stated 4/8spec lines stated 5.7
28 PixLab Annotate Free planYesPaid fromnot statedAnnotation typesbounding boxes, polygonsImage formatsnot statedModel-assisted labelingnot statedDataset exportstructured JSONTeam collaborationnot statedAPI accessnot stated 3/8spec lines stated 5.6
Compare all 3 in a table
| # | Tool | Score | Free plan | Free plan | Paid from | Annotation types | Image formats |
|---|---|---|---|---|---|---|---|
| 26 | Keylabs | 5.7 | No | No | — | Bounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotation | — |
| 27 | RectLabel | 5.7 | No | No | — | boxes, rotated boxes, polygons, cubic Bézier curves, lines, points, pixels, keypoints, image labels | — |
| 28 | PixLab Annotate | 5.6 | No | Yes | — | bounding boxes, polygons | — |
More in Design, Video & Audio
All design, video & audio listsVideo Editing Software 161Photo Editing Software 160Digital Asset Management Software 151Graphic Design Software 1503D modeling software 148Video Downloaders 137Live Streaming Software 136Screen Recording Software 133Audio Editing Software 130Animation Software 108Image Upscaling Software 100Data Visualization Software 98