Heartex is described as 'Data labeling tool for various data types with a customizable interface, annotation team management, and automatic labeling through active learning'. There are nine alternatives to Heartex for a variety of platforms, including Online / Web-based, Windows, SaaS, Mac and Self-Hosted solutions. The best alternative is UniversalDataTool, which is both free and Open Source. Other great apps like Heartex are AWS SageMaker Ground Truth (Paid), Label Box (Paid), HyperLabel (Free Personal) and Segments.ai (Paid).
The Universal Data Tool is a User Interface for editing and annotating Images (Computer Vision, Bounding Boxes, Segmentation), Text (Named Entity Recognition, Classification) or general purpose data entry. to view and edit any data defined in the extensible the .udt.
Amazon SageMaker Ground Truth helps us build highly accurate training datasets for machine learning quickly. It offers easy access to public and private human labelers and provides them with built-in workflows and interfaces for common labeling tasks.