Text2data's real-time Sentiment Analysis API enables you to analyse sentiment of any text based content through a scalable and secure RESTful API service.
Our analysis is based on Natural Language Processing (NLP) engine that can be easily extended with user-specific custom model classifiers. Our system also contains specially prepared classification models for Twitter and other social media content, trained on billions of manually verified entries.
Our API is available free of charge for the 30-day trial (limits apply).
You can test it by going to our live demo page
We offer a number of Open Source API clients.