DU Caller vs Open Contacts
A side-by-side look at DU Caller and Open Contacts. For an in-depth review of either product, follow the links below.
DU Caller
Security & Privacy
DU Caller is a free app that helps identify and block spam calls. It has a community-driven spam call database and can automatically block known spam numbers.
spam-call-blockingcall-identificationcommunity-reports
Open Contacts
Business & Commerce
Open Contacts is an open source contact and customer relationship management platform. It features contact management, task organization, calendaring, and can store relevant customer file attachments.
contactsopen-sourcecrmcalendar
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Kontact - KAddressBook
Relationship