One of the biggest and most well-known affiliate programs is Amazon Associates.

 You can promote a variety of goods and get paid for any sales made through your affiliate links.

Clickbank

is a marketplace for digital goods like software, ebooks, and online courses. It provides a large selection of products to promote and high commissions.

ShareASale

 is an affiliate marketing network that links affiliates with retailers selling a variety of goods and services. It’s renowned for having an intuitive user interface.

A global affiliate marketing network with a wide variety of advertisers and products is called CJ Affiliate (previously known as Commission Junction). It is appropriate for affiliates with a variety of audiences and specialities.

Rakuten LinkShare, formerly known as Rakuten Advertising Rakuten provides a range of goods

Do your own research to find more affiliate programs.