# Community directories Community directories are powerful ways to centralize and share knowledge within a community. ## Description - Listing a ton of items with details, encyclopedia-style - Curate and categorize to build sets (per city, per country, etc) - Next level is to create a comparison engine to show how things can go together or compare/contrast them - Supplemented by content (articles, videos, etc) ## Types - Founder maintains it and charges access to the data, curation - The founder has an audience/community and they charge people to be able to list stuff - Directory as marketing (e.g., Zapier's app directory) - Directory for directory - End up charging to have your product ranked higher (e.g., G2 crowd/capterra) - Erodes trust in the data over time