EFL Magazine Grammar resources: Organized by level, category, topic, function etc. Worksheets, lesson plans, video activities for every grammar point. Super useful!
English Grammar Exercises: This website provides you with practice material and online grammar and vocabulary exercises for students and teachers . Exercises can be done on browser, tablets and smartphones.
Teaching Games: Not organized but good ideas. You can use the search function to find specifics.
Sites for students:
ESL Grammar points explained (wyzant): Are you learning how to speak English? You've come to the right place! Here, tutors have shared their knowledge.
English Grammar Exercises: This website provides you with practice material and online grammar and vocabulary exercises for students and teachers . Exercises can be done on browser, tablets and smartphones
Perfect English Grammar: Online exercises and grammar explanations by verb type and verb form. Confusing to navigate but teachers can specify direct link to online exercises for self-check and self-study.