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Life & fun · April 19, 2019

CT

Cardbox – The address book reimagined as a social network

Cardbox – The address book reimagined as a social network launched on April 19, 2019 with 16 votes, #907 of 3,128 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 7 years on.

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In plain words

Cardbox is an address book application that combines traditional contact management with social network features. Launched in 2019, it allows users to store and organize contact information while connecting with others in a social format. The platform is designed for anyone who wants to manage their contacts beyond simple phone numbers and email addresses, integrating social networking elements into what is typically a standalone utility tool.

written from the facts on this page · September 2026

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Source: Show HN post ↗

Launched alongside, April 2019

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