# One Developer Built What AI Companies Are Charging For. Now It's Free. - slug: one-developer-built-what-ai-companies-are-charging-for-now-its-free - date: 2026-04-25 - category: Agentics A solo developer just shipped an open-source memory layer for AI agents on Postgres, the same infrastructure already running most of the internet, testing whether memory is a product worth paying for or just the next thing that becomes free. ---