Markwise
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Research annotation

Diigo alternatives (2026)

Diigo is a long-running research highlighter: sticky notes, outliner, classroom features. Alternatives appear when you want meaning search across a mixed library rather than an annotation suite.

Ranked by job

  1. 1. Personal research you will ask later

    Markwisethis site

    Highlights + Copilot. Not a classroom LMS or outliner.

  2. 2. Highlighting as a first-class reading feature

    Readwise Reader

    Closer to Diigo's annotation culture, with a modern reader.

Feature matrix: Markwise vs Diigo

Questions