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Header Override vs Slop Mop

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

Header Override compared with Slop Mop
DetailHeader Override logo Header OverrideSlop Mop logo Slop Mop
What it doesOpen-source browser extension to modify HTTP request and response headers and cookies A bad-writing detector for social feeds that folds away low-value posts and explains why.
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelOpen source Freemium
PricingNot given Free for one feed with 250 checks per day. Slop Mop XL coming soon at $5.99 a month or $59.99 a year.
Key features
  • Modify request and response headers with a focused editor interface
  • Scope rules to specific URLs using browser-supported filter patterns
  • Customize response cookies with Domain, Path, SameSite, Lifetime, Max-Age, and Secure attributes
  • Create up to five local rule profiles for different projects and test setups
  • Import and export profiles as local JSON files between browsers
  • Enable, disable, delete, and annotate rules with comments
  • Support for Chrome, Edge, and Firefox
  • All rules stored locally in browser with no server transmission
  • Reads posts ahead before they reach your view
  • Folds low-value posts into compact strips
  • Shows reasoning behind each judgment
  • AI model judges twelve aspects of each post
  • Vote to override verdicts
  • Three sensitivity levels: Mild, Moderate, Aggressive
  • Hide or Highlight modes for controlling visibility
  • Slopprint shows nine tells in visual shape
  • Works in Chrome and Chromium browsers
  • 250 daily checks on free plan
What makes it different
  • Open-source with MIT License and full transparency
  • Rules stored entirely locally with no analytics, tracking, or external servers
  • Lightweight alternative to ModHeader
  • URL scoping prevents rules from affecting unintended websites
  • Simple interface requires no coding knowledge
  • Not an AI detector but a bad-writing detector
  • Reader stays in control with no permanent blocking or deletion
  • Explains its reasoning with detailed scoring and tells
  • Free for one feed forever
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)14 +6 (up) since last check21 no change since last check
Trust Flow (Majestic)34
Citation Flow (Majestic)1817
Referring domains (Majestic)1336

4 details filled in for both companies.

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