Sugar CRM became popular with its web application which lets businesses track their customers and prospects using a browser only just like ContactUs.com that relies on the power of a web browser to deliver a comprehensive set of features for lead management to its users. It is the most popular provider in open source software solutions for customer management.
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Pros
Pro Extremely customizable
Unlike other CRMs, Sugar allows you to create, edit, and modify virtually any feature to make it work with your workflow.
Pro Users can easily send reports in the email from within Sugar CRM.
This means that you can share the data without having to give access to Sugar CRM reporting section to everyone in the team who needs these reports to work on the marketing strategy.
Pro Creating reports in SugarCRM is extremely easy
If the user knows what information they would like to review, they can rely on themselves to create the comprehensive report.
Cons
Con Sugar CRM offers provision for online queries but reports are still not made available for all inquiries.
From article https://www.romexsoft.com/blog/develop-crm-system