Four focused brands under Itorzo.
Each brand serves a specific audience with its own identity — supported by shared publishing and operating infrastructure. Visit our sub-brand sites: knowledgeflowbooks.com, itorzopublications.com, calculatorbyea.com, and llmcalculator.net.
Knowledge Flow
Explore knowledge. Inspire minds.
A trusted educational publisher of academic, professional, and scientific titles for students, educators, and curious learners.
Itorzo Publications
Books for everyone — beyond the classroom.
The global independent publisher for everything except academic and educational books — cookbooks, lifestyle, general interest, fiction, non-fiction, health, self-help, children's books, and more.
Itorzo Digital
Software, tools, and digital products.
Itorzo's digital products arm — building SaaS tools and web applications. Products include CalcByEA (a satirical paywalled calculator) and LLMCalculator.net (a free LLM cost calculator and model comparison tool for AI developers).
Itorzo Freelance Services
Top-class work, delivered by vetted freelancers.
A gig-matching platform connecting clients with carefully vetted freelancers across writing, design, programming, and more.