Twinword API
APIs for developers that analyze and understand natural human text.

A dictionary and so much more! Rich information for a word with definitions, associations, examples, and much more.

Vocabulary test with levels and exam-specific words (SAT, GMAT, etc). Customized word association quiz for game and e-learning software.

Classify unstructured data such as articles or text into predefined categories.

What emotions are in this text...? Detect the emotions of a paragraph of text.

Build a graph with words connected to other words. Diagram information for visualizing concepts or mind maps.

Get keywords and search volume for PPC and SEO scored by relevance.

Automatically generate topics and keywords for articles and blogs.

One API for all your text analysis needs. Sentiment Analysis, Topic Tagging, Lemmatizer, and much more. Various NLP tools all with one plan. Use natural language processing to analyze and understand human sentences.

Evaluate the similarity of two words, sentences, or paragraphs

Recommend highly related categories for e-commerce and other uses.

What's another word for this word, phrase, or paragraph? More than just synonyms, related words too!

What's the difficulty level of this article? Evaluate the difficulty level of a word, sentence, or paragraph and compare it with another.

"Dogs" to "dog", "abilities" to "ability". Get the root form of a word.

Is this comment positive or negative? Find out the tone.