1. Freelancing: Freelancing is a great way to earn money online without investment. You can offer your skills in writing, programming, graphic design, social media management, and other services on various freelancing platforms such as Upwork, Fiverr, and Freelancer.
2. Online Surveys: You can sign up for online survey websites like Swagbucks, Toluna, and Vindale Research to earn money by taking surveys and providing your feedback on products and services.
3. Content Writing: If you have good writing skills, you can earn money by writing articles and blog posts for various websites and blogs. You can find writing opportunities on freelance marketplaces or content mills like iWriter and Textbroker.
4. Affiliate Marketing: You can become an affiliate marketer and promote products or services of companies and earn a commission for every sale made through your unique referral link.
5. Online Tutoring: If you have expertise in a particular subject, you can teach students online and earn money. You can sign up on websites like Chegg, TutorMe, and Skooli to offer your tutoring services.
These are just a few examples of how you can earn money online without investment. However, it's important to note that some of these methods may require time and effort to generate significant income.