Aller by Dalton Maag Ltd. is a free humanist sans serif with open shapes and gently changing stroke widths. Its tall, clean letters feel informal without looking casual. Soft curves keep the design approachable.
Friendly service and everyday communication are its natural territory. It suits cafe branding, educational publishing, wayfinding, and community event posters because the letterforms are clear but not severe. The rounded joins and slightly softened corners echo simple icons and illustrations used in those settings.