Respondus might be a bit more popular than Google Classroom. We know about 1 link to it since March 2021 and only 1 link to Google Classroom. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
This is enlightening. I do see they have a marketing / landing page which makes me feel there is a product charter beyond half-a-SWE: https://edu.google.com/products/classroom/. - Source: Hacker News / over 2 years ago
I've used a commercial tool. Iirc, there is a free trial and then it's not very expensive. https://web.respondus.com/he/respondus/. Source: about 2 years ago
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!
Avanset VCE Exam Simulator - VCE Exam Simulator is a test engine designed specifically for certification exam preparation.
Talent LMS - A super-easy, cloud LMS to train your employees, partners, customers or students.
Adit Testdesk - Create, run, and grade all sorts of tests automatically!
Docebo - Docebo Learning Management System is the best cloud LMS system on the market for online training. AICC SCORM xAPI compliant. Mobile elearning platform
ProfExam Simulator - Test engine for certification exam preparation.