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OpenCapture vs Keyword Cluster

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

OpenCapture compared with Keyword Cluster
DetailOpenCapture logo OpenCaptureKeyword Cluster logo Keyword Cluster
What it doesFree full-page screenshot browser extension for Chrome, Edge and Firefox Chrome extension for keyword clusters and SEO insights
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Free
PricingFree: Full-page, visible-area and selected-area capture, crop, draw, text, shapes, blur, unlimited undo, and export to PNG or PDF. Supporter: $5 for 1,000 credits (one-time, includes tiled logo or text watermark with custom opacity, position, and angle). Not given
Key features
  • Full-page screenshot capture
  • Visible-area and selected-area capture modes
  • Crop and resize images
  • Draw, text and shapes annotation
  • Blur sensitive information
  • Unlimited undo
  • Export to PNG or PDF
  • Capture history with last 50 screenshots
  • Tiled watermark (Supporter feature)
  • Keyword clustering by search intent
  • Long-tail keyword discovery
  • AI-powered keyword grouping
  • Real-time insights on Google and Bing
  • Topic cluster identification
  • Related search query suggestions
  • No account or login required
  • Support for Google, Bing, and YouTube
What makes it different
  • Completely open source under AGPL-3.0-or-later so users can verify no data collection
  • All processing done locally with no uploads unless buying credits
  • No account required for all core features
  • One-time payment for Supporter feature instead of subscription
  • Stitches full pages into seamless single images
  • Shows keyword clusters directly in search results without leaving Google or Bing
  • Completely free with no account needed
  • Eliminates need to switch between multiple SEO tools
  • Groups keywords by search intent for better content alignment
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check11 no change since last check
Trust Flow (Majestic)213
Citation Flow (Majestic)2123
Referring domains (Majestic)2550

4 details filled in for both companies.

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