Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Zeplin - Collaboration app for UI designers & frontend developers
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
ActiveWords - Auto correct on steroids
GetResponse - Email marketing from GetResponse. Send email newsletters, campaigns, online surveys and follow-up autoresponders. Simple, easy interface. FREE sign up.