Balsamiq Mockups
A great tool to draw mockups of your new website.

Pubsubhubbub
Pubsubhubbub is a protocol that allows you to get your content indexed by Google in a matter of minutes (or even seconds). You can read more about it here or download the WordPress plugin here.
Google Analytics URL Builder
I work with several marketing consultants and business coaches that refer their clients to me all the time. In order to track this, I could either set up an affiliate program (which costs money and takes time) or create a custom URL for each of my business partners (which is free and takes literally 30 seconds). I used the Google Analytics URL Builder and now I can see in my Analytics how much traffic each of my partners sends me and how many of those visitors become leads.

MEDIAgility – Media Contacts on Demand
Do you want to get in touch with the most influential journalists in your industry? PRNewswire sells this information.
AwayFind
I have a rule I try not to ever break: I only check my email once a day. By doing this, I free up a lot of time I can use working on my marketing campaigns. But what about when you’re expecting a very important email from someone? AwayFind sends me an email alert or an SMS every time I get an email that meets the criteria I selected (e.g. sent by “Jack Mirne” or with the word “urgent” in the subject). That way I only get alerts for the urgent emails I can check the rest at the end of the day.

KissInsights
A really easy way to get feedback from your website visitors.

SmartSheet
If you’re looking for a great tool to manage your team but want something simple instead of those over-complicated tools with a thousand features, SmartSheet is for you. I use it every day and I couldn’t love it more.