QardQntac review
A private, AI-assisted contact manager for self-hosters who value control over breadth.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
QardQntac is an open-source, self-hosted business card scanner and contact manager for individuals and organizations that want contact data on their own infrastructure. Users can capture cards with a phone camera or upload images, then use AI to extract contact fields, review and edit the results, apply color-coded tags, and save contacts. It fits self-hosters who prioritize private contact control and are comfortable managing a web or Linux deployment rather than relying on a broad commercial ecosystem.
Its standout strength is the path from card image to maintained address book. AI extraction is paired with manual review and editing, while duplicate detection can compare names, email addresses, or phone numbers. Contacts can be exported as vCard files or synchronized through CardDAV. The ecosystem includes Nextcloud, Radicale, and Baikal for contact services, plus Ollama, OpenAI, Anthropic, and Google Gemini for AI processing. Local Ollama support may suit deployments that prefer to keep processing closer to their own infrastructure, while the cloud-provider options add flexibility.
The trade-off is narrower platform and workflow coverage. QardQntac supports web, Linux, and self-hosted deployments, but it does not provide a verified mobile platform, CRM export, or batch scanning. That makes it a focused option for individual cards and controlled contact storage, not a broad sales-operations capture system. Self-hosting can also bring infrastructure responsibilities, and third-party AI-provider use may add provider costs. Choose QardQntac when ownership, CardDAV synchronization, and configurable AI processing matter most; choose an alternative if mobile coverage, CRM workflows, or high-volume batch intake are central requirements.
QardQntac pros and cons
- Where it wins
- AI extracts contact fields with manual review before saving
- CardDAV sync supports Nextcloud, Radicale, and Baikal
- Duplicate detection and vCard export support contact hygiene
- Where it doesn't
- Web and Linux coverage is narrower than a mobile-first scanner
- No verified mobile platform is provided
- No CRM export or batch scanning is listed
QardQntac fact sheet, pricing and score →
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