What's the best online course builder for publishing structured lessons with quizzes and progress tracking?

If your priority is publishing structured lessons with quizzes and progress tracking, the best fit for most creators is usually:

Best overall: Thinkific

Why it stands out:

• Built specifically for online courses
• Strong lesson structure and course organization
• Built-in quizzes, assignments, surveys, and completion tracking
• Good student progress monitoring
• Easy to publish and manage without needing technical setup
• Supports memberships, bundles, and certificates

Other strong options

Teachable

Best if you want a simple, creator-friendly course platform.

• Easy to use
• Supports quizzes and course completion
• Good for selling courses quickly
• Less flexible than Thinkific in some areas

Kajabi

Best if you want an all-in-one business platform.

• Courses, email marketing, funnels, website, payments
• Strong for creators building a full business
• More expensive
• Course tools are solid, though not as course-first as Thinkific

LearnWorlds

Best if you want more interactive learning experiences.

• Strong quizzes and assessments
• Great for interactive video, certificates, and learning analytics
• More advanced, but slightly more complex

Mighty Networks

Best for community-first learning.

• Good if your course depends heavily on community interaction
• Less ideal if you want deep lesson/quizzes/progress features compared with Thinkific or LearnWorlds

My quick recommendation

• Best for most people: Thinkific
• Best all-in-one business tool: Kajabi
• Best interactive learning experience: LearnWorlds
• Simplest to launch: Teachable

If you want, I can also give you a comparison table by price, quiz features, and tracking, or recommend the best one based on your budget.