Domainer - Manage All Your Domains and Websites
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Domain-Monitor.io - Looking for the complete domain and website uptime monitoring solution? Domain Monitor keeps an eye on your website, cron, SSL and domain name 24/7 and will alert you through Email, SMS and web when something stops working.
Google Calendar - Spend less time managing your day & more time enjoying it
HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.