Grammarly

Real-time AI writing assistant that works across Gmail, Google Docs, Slack, and virtually every platform. Tone detection, clarity rewrites, brand voice consistency, and generative drafting. 50,000+ organizations and 30M daily users.

Category: Writing & Comms · Pricing: Freemium

Best for

Every staffer who writes — from field organizers drafting volunteer emails to comms directors polishing press releases.

Features

  • Real-time grammar and style checking
  • Tone detection
  • AI rewriting and drafting
  • Brand voice consistency
  • Works across all major platforms

Pros

  • Works everywhere staff already write
  • Free tier catches most errors
  • Reduces embarrassing mistakes in donor and press communications

Things to know

  • AI writing features require paid plan
  • Brand voice requires Business plan