Download Insight Contact Management
Insight Contact Management is a single-multiuser program to manage your contacts. You can save contacts and add each contact have unlimited phone numbers, notes, links and email addresses.
It lets you organize your contacts into groups and let them categorized. But each contact or group in them is in plain view in a unique hierarchical layout, which makes it easy to find any particular contact. It allows you to create temporary groups for your ongoing or short term projects. Just delete or remove it from the list once the project is finished.
The complete version charges you a certain amount but it also allows you to download the free trial of the software.