Grammar and Vocabulary
Activities for ESL Students (from A1)
Online English Learning: Learn English with quizzes, tests, crossword puzzles, exercises, and other activities for students of all levels, special focus on grammar and vocabulary.
Learning English Online (from A1/A2)
This website offers grammar rules and exercises. All exercises include keys and explanations. The vocabulary section provides lists, phrases, sentences, and idioms as well as exercises.
The Grammar Girl
A lot of questions (and answers) about English grammar. You can also ask your own questions in the forums.
ESLPDF offers free worksheets, handouts and printables for learners of English as a Second Language (e.g. vocabulary exercises, grammar).
This website provides a large collection of English as a Second Language (ESL) tools & resources for students, teachers, learners and academics. There is a grammar glossary and the possibility to communicate with fellow learners on a message board.
English Grammar Guide (from A1)
Explanations and tests for all grammar related topics.
BBC Learning English
The BBC website offers a descriptive overview about different aspects of grammar, tips on learning vocabulary, pronunciation exercises, listening tasks and much more. The website is updated regularly.
Verb Tense Tutorial
Different varieties of grammar exercises with cloze tests and answer keys. Recommended for consolidating the use of tenses.