Creative and Writing Services. Litera is a professional writing agency based in Sydney, Australia. The core business is writing and editing, which the company augments with services in research, design and publishing. Most services are bespoke, though Litera also offers a fixed-price Same-Day Editor online editorial service. Company clients include multinationals, universities, SMEs, start-ups and individuals. Several of the company's projects have resulted in publications. See Litera Book and Music Shop for details.