Grinfer alternatives

Grinfer is a proprietary app for Online. It is a paid product (one-time $20). Developed by SevereX.

Alternatives

• Khan Academy
• Coursera
• Codecademy
• Udemy
• edX
• SkillShare
• Pluralsight
• Domestika
• INE
• OpenLearn
• Codeasy
• SitePoint