Proprietary freeware for macOS

Picasa is a discontinued, cross-platform image organizer and image viewer for organizing and editing digital photos, integrated with a now defunct photo-sharing website, originally created by a company named Lifescape (which at that time was incubated by Idealab) in 2002. "Picasa" is a blend of the name of Spanish painter Pablo Picasso, the word casa (Spanish for "house") and "pic" for pictures.