Open source software can generate revenue by various means, such as:
Donations: Open source software can solicit donations from users, supporters, or sponsors who appreciate or benefit from the products.
Crowdfunding: Open source software can raise funds from the public through platforms such as Kickstarter, Indiegogo, or Patreon, in exchange for rewards, perks, or recognition.
Services: Open source software can offer services such as consulting, training, customization, integration, or maintenance to users or clients who need assistance or expertise with the products.
Premium: Open source software can offer premium features, versions, or products that are exclusive, advanced, or enhanced, for a fee or subscription.
Advertising: Open source software can display advertisements on their websites, platforms, or products, to generate income from clicks, views, or impressions.