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Quillmark logo

Writing

Quillmark

Line edits with the reason written in the margin, never silent rewrites.

4.3Highly recommendedPaid

The review

What it does

Quillmark is an editor, not a ghostwriter. It reads your draft and leaves margin notes: a sentence that runs long, a word used three times in a paragraph, a claim that sounds stronger than your evidence. Every suggested change comes with a one-line reason, and nothing is applied until you click it.

Why we like it

Because it explains itself, you actually get better at writing instead of just getting a cleaner document. The house-style feature lets a team load its own rules (Oxford comma or not, how to write numbers, banned buzzwords) and Quillmark enforces them consistently. Copy editors we know use it as a first pass before their own read, not a replacement for it.

Watch out for

  • No free tier, and the per-seat price adds up for larger teams.
  • It occasionally flags deliberate fragments as errors. Mark them as style once and it learns.
  • Fact-checking is limited to internal consistency; it won't verify claims against the outside world.
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