Why this is on the list
Substack is the simplest way to start a newsletter and build an audience around your work. Free to start — Substack only takes a cut if you add paid subscriptions. For social entrepreneurs, a newsletter is often more useful than social media because your readers actually see what you write. If you are building a programme, running a campaign, or simply want to document your journey in public, Substack gives you a home for that. The barrier to starting is genuinely low: a name, a brief description, and your first issue.