Adzooma

It's much easier to log into one platform and see yesterday's expenses and income across many accounts than to log into each account separately.

With this pay-per-click (PPC) software, businesses can set up, manage, modify and track the performance of PPC campaigns. From a single screen, you can manage all campaign management on Google, Microsoft and Facebook channels based on bids and budgets.

Adzooma convinced me because of: 

• The interface is intuitive and clear.
• The optimization suggestions are helpful (that's not the case everywhere).
• Microsoft Ads is getting stronger and this tool supports Microsoft Ads.
• The most complete free version I have found.