Better

This extension looks at your current URL, and recommends BETTER product/service alternatives via an in-page pop-up.

Premium users can view and search full source code, and see the source code differences between two versions.

manifest.json

{
  "name": "Better",
  "version": "0.5.0",
  "icons": {
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{02d8a7bd-79ba-4808-8e11-f3e19af43f90}"
    }
  },
  "description": "This extension looks at your current URL, and recommends BETTER product/service alternatives via an in-page pop-up.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "contentscript.js"
      ]
    }
  ],
  "manifest_version": 2,
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "browser_action": {
    "default_icon": "images/48.png",
    "default_title": "Better",
    "default_popup": "toolbar/popup.html"
  },
  "web_accessible_resources": [
    "defaultlist.json",
    "lists/*"
  ]
}