With Frontend-User-Access you can set frontend access restrictions to:

• menu-items (item in menu-module + page-access)
• components
• modules
  
• articles (specific articles)
• articles by category
• articles by section

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manage user's:

• article access when editting in backend and frontend
• category access when editting articles in backend and frontend
• sections access when editting articles in backend and frontend
• page access when editting articles in backend and frontend
• itemtype access with component Pages-and-Items
• component access at backend
• module access at backend
• plugin access at backend
• workflow settings
• Admin-User-Access backend toolbar
• custom toolbar buttons per usergroup in the backend
• hide Joomla toolbar

Content manager with CCK

• prefab itemtypes (install as plugins)
• explorer-like admin tool with page tree (like typo 3)

With fully integrated itemtype HTML and 'other item' (simulate one article in different categories).

Pure CSS tooltip mambot/plugin

Plugin to display any module into an article.