- Prodigy installer for Python 3.6+ on macOS / OSX, Linux and Windows. 
- Standalone, self-hosted annotation back-end with pluggable architecture. 
- Built-in annotation recipes for a wide range of machine learning tasks, including named entity recognition, span categorization, text classification, part-of-speech tagging, dependency parsing, coreference resolution, computer vision, audio and video annotation, transcription, speaker diarization, training and evaluation, and more.  
- Customizable web application with 20 annotation interfaces for text, images, audio, video, relations, multiple-choice, HTML, conflict resolution and more. 
- Active learning models for named entity recognition, text classification, part-of-speech tagging and dependency parsing. 
- Extensive documentation and access to the Prodigy Support Forum. 
- Cloud-free: Prodigy works offline on your own hardware. No data ever needs to leave your servers. 
- No lock-in: fully open and extensible data formats and storage solutions. 
- Lifetime license: buy once, keep forever and receive 12 months of free upgrades.