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Substack
ContentPaid newsletters where readers pay directly to writers, bloggers, thinkers, and creatives of every background.

Teachable
ContentA platform for online education through courses and coaching

Thanks
DonationsA tool that helps you see if any of the software you depend on has authors seeking for donations

Tidelift
SupportProfessional assurances directly from the open source experts who know it best.

Tipeee
DonationsTipeee is a financing platform for Internet content creators allowing them to receive tips from their communities.

Udemy
ContentA marketplace for teaching and learning, through online video courses.

XS Code
PaywallA platform for open source projects offering paid subscriptions for open core, dual licensing, support, models.