smarterGerman's Everyday German Course (A1-B1) may be the most comprehensive online German course you'll find. It teaches German with the help of a crime story - each lesson corresponds to a different chapter in the story. Throughout the variety of exercises in each lesson, you'll improve every area of your German. I was surprised by just how unique this course is. Michael, the creator, does a great job of creating a space for you to learn without spoonfeeding you the information. Review.
Most people have heard of Duolingo, but not nearly as many know about Lingodeer. These two platforms are fairly similar but I greatly prefer Lingodeer. Both of them are pretty good and make learning the basics a bit more fun. Lingodeer has a lot more variety in the types of exercises, more detailed grammar notes, and better audio recordings. Best of all, it's completely free to use. Review.
Coffee Break German teaches German in a slow and methodical way. It's similar to sitting in on a lesson and you'll learn alongside one of the hosts. It forces you to actively think and put together sentences in German. Lessons slowly build up from single words, sentences, and then dialogues. The paid courses include extras, but you can find the basic audio lessons for free from any podcast app or on iTunes.
Pimsleur is one of the most established language learning courses around. In the past, their courses were also among the most expensive, but recently, they've added a subscription option which makes it a much better deal. Unlike most courses, their focus is almost entirely on the oral language. You'll spend your time listening, thinking, and answering questions in German. Review.
Language Transfer is relatively new among language learning resources. It's somewhat similar to the Michel Thomas method where a teacher explains how the language works and then you apply this to form sentences. While it may be tempting to listen passively, to get full use out of it you'll want to actively participate in the lessons. Best of all, it's completely free to use.
With italki, you can find an online German tutor for much less money than you may expect. This platform has tons of teachers available to choose from and is very convenient to use. Additionally, they have some useful free features. For example, you can get your writing corrected for free, find a language exchange partner, and ask any language learning questions you may have. italki is probably the resource I recommend most often, regardless of which language you're learning. Review.
If you want to improve your pronunciation and prosody, Speechling is probably the best resource available to help you. The premium option allows you to submit unlimited recordings to be corrected by a native German speaker. There are also lots of free features, like dictation exercises, being able to record yourself mimicking recordings, multiple choice questions, listening practice, and more. Review.
GermanPod101 offers tons of audio, podcast-style lessons for German learners. It's a great option for anyone who plans to study a lot while moving around and not sitting at their computer. Typically, lessons center around a dialogue with lots of explanations, and some casual chatting throughout. Beginner level lessons include lots of English but as you move up, the English is slowly used less.
News in Slow German is one of the most fun ways to study German. As the title suggests, it teaches the language with news stories narrated at a slower pace. It would be best for intermediate level students that aren't quite ready for native content but are looking for more interesting ways to study. There are various subscription plans available with different features included.
Rocket Languages offers courses for many languages, including German. There are three levels, starting at an absolute beginner level and ending around an upper-intermediate level. Lessons are audio-based and focus on conversational German with lots of explanations of parts that may be confusing. Additionally, there are many features to help you practice what you've learned.
There are tons more great resources for learning German - far more than I could add to this page. Click the picture below to visit a page with over 130 resources for studying German - including apps, podcasts, courses, websites, books, and more. Most of them are free!