Acorn (awesome image editor for Mac) uses SQLite as .acorn image format. Schema: sqlite> .schema CREATE TABLE image_attributes ( name text, value blob

Acorn (awesome image editor for Mac) uses SQLite as .acorn image format. Schema: sqlite> .schema CREATE TABLE image_attributes ( name text, value blob); CREATE TABLE layers (id text, parent_id text, sequence integer, uti text, name text, data blob); CREATE TABLE layer_attributes ( id text, name text, value blob); My app, Mémoires (diary for Mac), and some other Mac apps, use SQLite via Apple's Core Data as document format.