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
CrowdFlower - Enterprise crowdsourcing for micro-tasks
CloudFactory - Human-powered Data Processing for AI and Automation
Supervisely - Supervisely helps people with and without machine learning expertise to create state-of-the-art...
Playment - Playment is a fully-managed solution offering training data for AI, transcription, data collection and enrichment services at scale.
Amazon Mechanical Turk - The online market place for work.