Alternatives to lenso.ai

2D and 3D face alignment research code — 68-point 2D-FAN and 3D-FAN landmark models plus the 230,000-image LS3D-W dataset.

Open-source research framework that adapts text-to-image diffusion models to follow natural-language instructions across vision tasks.

Identify Chinese, Japanese, and Korean typefaces from an image with a free CJK font detector.

UnrealCV turns Unreal Engine 4/5 scenes into photorealistic synthetic image datasets with exact ground truth for computer vision.

Offline image annotation desktop app with local SAM2, SAM3 and YOLO-World AI — one-time purchase from $49.

Cerul turns video archives into semantic video search — ask in plain words, get the exact timestamped moment.

Autodistill labels your raw images with a foundation model, then trains a small vision model whose weights you own.

Open-source Java software for processing and analyzing scientific images, extensible through hundreds of plugins

Olympus turns a Multimodal LLM into a task router that dispatches 20+ computer vision tasks to specialist models.

SAM 3 does text-prompt, open-vocabulary segmentation and tracking in images and video — free to try in Meta's playground.

3DMatch is a Princeton research codebase and benchmark suite for learning local 3D geometric descriptors from RGB-D reconstructions.

Meta's open-source promptable segmentation model for selecting and tracking objects in images and video

MC3-18 fine-tuned on UCF-101: an Apache-2.0 PyTorch checkpoint for 101-class trimmed-clip video action recognition at 87.05% top-1.

Twelve Labs turns raw video into searchable, AI-ready data with its Marengo embeddings and Pegasus video-to-text models.

QOVES scores 160+ beauty markers in an AI facial analysis and turns them into a surgery-free glow-up protocol backed by named studies.

asticaVision delivers image description, face and object detection, OCR, and moderation through one computer vision API.

Free scene text recognition in the browser with PARSeq's permuted autoregressive OCR model

VideoVector turns video, audio, and image archives into timestamped, schema-backed metadata you can search by text, image, SQL, or AI agent.

Open-source object detection with Faster R-CNN and SSD, built by Tryolabs for learning classic computer vision pipelines.

Open-source scene text detector that fixes EAST's long-line weaknesses

UrbanKisaan sells plug-and-play grow modules plus AI speed breeding and a conversational farm OS for controlled-environment agriculture.

Mineral's per-plant crop intelligence AI, now inside Driscoll's and John Deere

Google Cloud Vision AI: APIs for image labeling, OCR, document extraction, and video analysis

Roboflow is a computer vision platform for labeling data, training custom detection models, and deploying to cloud or edge.

OpenCV: free, open-source computer vision library for real-time image and video processing

Dragoneye turns your footage into structured records using zero-shot vision models you describe in plain English — no labeling, no training.

Taranis delivers leaf-level crop intelligence from submillimeter drone imagery plus generative AI agronomy.

VideoDB turns live and recorded video into queryable, playable context your AI agents can search and edit.

Free on-device and cloud ML APIs from HMS Core for adding vision, text, speech, and face features to Android and iOS apps.

Reka builds omni models for real-time video reasoning that fit inside a 24 fps edge budget