Vtiger CRM
Vtiger is a PHP based web application that enables businesses to increase sales wins, marketing ROI, and support satisfaction by providing tools for employees and management work more effectively, capture more data, and derive new actionable insights from across the customer lifecycle.
Get involved
Development on vtiger is done at http://code.vtiger.com
Note: Any contributions submitted to Vtiger project should be made available under Vtiger Public License. If contribution has any patented code, or commercial code, then please communicate with Vtiger team before making the contribution.
https://www.vtiger.com/vtiger-public-license/
To register for an account, please contact info @ vtiger.com, you will need this to file issues and/or fix the code Once you have an account, you can browse the code, see if your issue is already reported and if you have a new problem to report you can create an issue
If you then want to fix the issue (or another issue) you can create your own fork of vtiger to work on using the fork button on the vtiger project, this will create a new git repository for you at
http://code.vtiger.com/yourname/vtigercrm.giton your computer you will need a git client installed and you need to tell git who you are: