Sentiment analysis, stemming and lemmatization, part-of-speech tagging and chunking, phrase extraction and named entity recognition.
DuckDuckGo Zero-click Info includes topic summaries, categories, disambiguation, official sites, !bang redirects, definitions and more. You can use this API for many things, e.g. define people, places, things, words and concepts; provides direct links to other services (via !bang syntax); list related topics; and gives official sites when available.
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Accurate weather forecasts for today and the next 7 days. Easy and free to use!
The WebKnox question-answering API allows you to find answers to natural language questions. These questions can be factual such as "What is the capital of Australia" or more complex.
This API can be used to compute a set of readability metrics for a given text. We currently support the following metrics: Automated Readability Index, Coleman-Liau Index, Flesch–Kincaid Grade Level, Flesch Reading Ease, Gunning-Fog Index, SMOG score, and SMOG Index. The service is deployed at Google App Engine and available at http://ipeirotis.appspot.com/readability/ The code and documentation are available on Github at https://github.com/ipeirotis/ReadabilityMetrics