Feng Office - Feng Office is a commercial Open Source web based solution aimed to enhance collaboration and productivity

Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...

LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.

Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.

Redmine - Flexible project management web application

Free Address Book - In our contact management software you can store fast and easily name, phone numbers, birthdays, address, company name, city, mobile numbers, insurance and loan info, e-mail addresses.