Freely Available Automatic Text Analysis Tools:

CLA is a simple but powerful text analysis tool. One can use CLA to analyze texts using very large custom dictionaries. In addition to words, custom dictionaries can include n-grams and wildcards.
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CRAT is an easy to use tool that includes over 700 indices related to lexical sophistication, cohesion and source text/summary text overlap. CRAT is particularly well suited for the exploration of writing quality as it relates to summary writing. Click here to learn more

SEANCE is an easy to use tool that includes 254 core indices and 20 component indices based on recent advances in sentiment analysis. In addition to the core indices, SEANCE allows for a number of customized indices including filtering for particular parts of speech and controlling for instances of negation.
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SiNLP is a simple tool that allows users to analyze texts with regard to the number of words, number of types, TTR, letters per word, number of paragraphs, number of sentences, and number of words per sentence for each text. In addition, users can analyze texts with regard to their own custom dictionaries.
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TAACO is an easy to use tool that calculates 150 indices of both local and global cohesion, including a number of type-token ratio indices, adjacent overlap indices, and connectives indices.
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TAALES TAALES is a tool that measures over 400 classic and new indices of lexical sophistication, and includes indices related to a wide range of sub-constructs.  Included are indices for both single words and n-grams. Starting with version 2.2, TAALES also provides comprehensive index diagnostics.  (TAALES 2.2 now available!)
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TAASSC is an advanced syntactic analysis tool that measures fine-grained indices of clausal and phrasal complexity, classic indices of syntactic complexity, and frequency-based verb argument construction indices.
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