The Universal Data Tool (UDT) is an open-source web or downloadable tool for labeling data for usage in machine learning or data processing systems.
The Universal Data Tool supports Computer Vision, Natural Language Processing (including Named Entity Recognition and Audio Transcription) workflows.
The UDT uses an open-source data format (.udt.json / .udt.csv) that can be easily read by programs as a ground-truth dataset for machine learning algorithms.
Labelbox - Build computer vision products for the real world
CloudFactory - Human-powered Data Processing for AI and Automation
CrowdFlower - Enterprise crowdsourcing for micro-tasks
Supervisely - Supervisely helps people with and without machine learning expertise to create state-of-the-art...
Amazon Mechanical Turk - The online market place for work.
Labeling AI - Labeling AI is a deep learning-based auto labeling solution that develops and auto-labels custom AI by learning minimal manual labeling data.