Google

Google Calendar is a fully featured online calendar with great Gmail integration. Mobile support is excellent and sharing is easy to do.

Gmail is an online email application which can store all of your email. Sending, receiving and finding old emails is very convenient.

Google Reader is a great feed reader. It is quick, has a simple interface and offers all the functionality you could think of.

Google Maps is a free web-based mapping application. Shows aerial photos, traffic, directions and 360 degree view of certain streets in large cities.

Google Spreadsheets is a free spreadsheet editor. Spreadsheets can be edited, stored and shared online.

YouTube is the most popular video hosting site. It is owned by Google Inc. and has millions of users all over the world.

iGoogle is a service to create a personalized start page. The service is free and you can login with a Google Account.

Blogger is the easiest blogging application available. It is reliable and has all the basic features. If you want to get started quickly, get Blogger.

Orkut is a social networking service owned by Google.

Google Sites is a free and easy way to create and share webpages.