Cambridge English provides integrated learning and assessment resources, world-recognized English exams, and professional development for educators globally.

Longman Dictionary of Contemporary English Online provides definitions, idioms, and exercises for learners of English, focusing on vocabulary and grammar practice.

Lingoda is an online language school offering live group and private courses in English, German, French, Spanish, and Italian with native-level teachers.

ego4u is a free online service offering English grammar exercises, vocabulary lists, business English materials, and resources for teachers.

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Online English learning platform offering free lessons and resources.