Best Free Alternatives to Diigo in 2026

Digital publishing platform that converts PDFs and office files into HTML5 flipbooks, interactive publications, and embeddable web content.

Google’s classroom hub for assignments, grading, communication, and workflow management inside Workspace for Education.

Microsoft’s survey, quiz, and poll builder with branching, Excel analysis, and browser-based response collection.

Interactive presentation platform with live polls, quizzes, surveys, and classroom engagement tools that fit into existing teaching workflows.

Art-inspired writing platform for creating stories, picture books, and other creative writing projects with illustrated prompts.

Game-based learning and engagement platform for quizzes, polls, presentations, training, and interactive sessions in education and business.

Etherpad is an open-source real-time collaborative editor with visible authorship, full revision history, and self-hosted control.

Educational activity generator for quizzes, crosswords, matching games, word tasks, dictation, and other interactive learning formats.

Reedsy Book Editor, now part of Reedsy Studio, helps authors plan, draft, edit, and format books for professional export.

Calmly Writer is a distraction-free writing app with online and desktop modes, markdown support, backups, and a minimalist interface.

Hemingway App is a writing editor focused on clarity, concision, readability, and AI-assisted simplification of wordy prose.

Flipgrid, later renamed Flip, is a retired video discussion platform; Microsoft ended the standalone service on September 30, 2024.