Learning English Grammar
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Oxford University Press grammar and vocabulary practice exercises. Cambridge English Grammar clear explanations with hundreds of examples.

LanguageTool’s multilingual grammar, style, and spell checker is used by millions of people around the world.

Microsoft Editor browser extension checks for grammar and spelling mistakes, and it makes suggestions for refining your writing, like addressing passive voice or wordiness.

Microsoft Audio content creation enables you to visually control speech attributes in real-time – such as voice style, rate, pitch, volume, pronunciation and breaks. It allows you to quickly create more accurate, expressive and customized audio.

Google Input Tools makes it easy to type (or handwrite) in the language you choose, anywhere on the web.

English Profile TextInspector checks the difficulty of any text for non-native speakers by levels of words in order of their learning by a common European standard (CEFR).

Corpus of Contemporary American English contains more than one billion words of text from eight media sources: spoken, fiction, popular magazines, newspapers, academic texts, TV and Movies subtitles, blogs, and other web pages.

Reverse phonetic dictionary, includes a lyrics editor and vocal synthesizer. Licensed under the GNU AGPL-3.0, hosted on GitHub and Google Script.

Separating vowels and consonants for slant rhyme and alliteration within a line has been inspired by rap and Hebrew language, vocal synthesis by the Vocaloid and ARSS.

Dictionary by CMU, sorted by frequency with PhraseFinder API based on Google Books Ngrams, parts of speech determined according to the latter.

Thanks to jerry123 and Max Martin for the idea of phonetic songwriting, English with Kim for clarifying pitch variation, Blake Snyder, Robert McKee and Shawn Coyne for story structure.

                              
                              
                              
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