It is our believe that no-one should be excluded from having access to the best CRM tools. That is why, we are allowing our applications to be used for free with no time limit (Free Edition: 100MB storage/user for 2 user per company). When your need of storage grows, you can easily upgrade it to Standard Paid Edition.

vtiger CRM is an Open Source CRM software for small and medium businesses. vtiger CRM uses open source technologies such as Apache, MySQL, PHP (and other open source projects) to provide a powerful multi-platform CRM solution (works on Linux and Windows).

vtiger CRM provides the CRM features that other commercial programs sell for thousands of dollars, such as: sales force automation, customer support & service, marketing automation (with support for e-mail campaigns), inventory management (with product customization module), security management, and of course contact management and task scheduling.

Constant Contact is an online contact management service with options to follow-up with your contacts via an email newsletter, promotion, event invitation, or to send them online surveys - an easy way to connect with your possible (or existing) customers and find out what you could do to improve their experience with your company.

Infusion CRM is a web based CRM system developed by Infusion Software and targeting small and medium businesses. Infusion CRM offers features that help you automate an entire business process, starting with marketing and sales support, product billing, lead follow-up, and much more.

Unlike other hosted CRM solutions, Infusion CRM also offers and integrated shopping cart that allows you to track and process orders. This is an interesting addition given that you can track closely customers or possible customers and see what they purchased (and when they purchased), what marketing campaigns were they part of, analyze their behavior on your website and many other tracking options that will give you the advantage of knowing how to approach them.

Box.net is a web-based storage service that allows businesses to share, manage and access their content online (documents, media and other files). Today they've announced integration with Salesforce CRM, which means that Salesforce users will be able to use all their content on box.net within the Salesforce CRM platform.

Salesforce CRM has a large user base which most likely will benefit from this integration, however this will incur additional costs. Box.net usually charges $15/user/month for a business account, and most likely these costs are the same for Salesforce CRM users (or maybe they offer a discount, haven't been able to find that information yet, but I know for sure that the amount they can store is unlimited).