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Header Override vs InvestFellow

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 InvestFellow
DetailHeader Override logo Header Override InvestFellow
What it doesOpen-source browser extension to modify HTTP request and response headers and cookies Stock ticker extension for Chrome and Edge with watchlist and price alerts
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelOpen source Freemium
PricingNot given Free: ticker bar and watchlist with prices refreshing every 2 minutes. Premium: $4.99 per month after a 7-day free trial, includes 4-second refresh, market movers, crypto, price alerts, and AI insights.
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
  • Stock ticker bar displayed on any website
  • Customizable watchlist for stocks, ETFs, indices, and futures
  • Price alerts with desktop notifications
  • Market movers display on Premium
  • AI stock insights on hover
  • Cryptocurrency support on Premium
  • Adjustable bar placement and styling
  • Works on Chrome and Edge browsers
  • Bid and ask price information on hover
  • Quick access to stock charts
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
  • Slim, unobtrusive ticker bar that works on any website
  • 4-second price refresh on Premium for near-real-time updates
  • AI-generated insights providing momentum and timing context
  • Free plan includes watchlist and ticker without trial required
  • Supports international markets and cryptocurrencies
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)8 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)33
Citation Flow (Majestic)1819
Referring domains (Majestic)1310

4 details filled in for both companies.

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