WhatsApp, Slack, Signal, Telegram, Gmail, Outlook and 75+ services in one fast desktop app — no more juggling ten browser tabs. Franz 6 adds a built-in AI assistant that summarizes long chats, transcribes voice notes, triages your inbox and drafts replies — all on-device, so your conversations stay private (EU-hosted Cloud optional). 1M+ downloads. Free, cross-platform, made in Vienna. Winner: Product Hunt Golden Kitty, Desktop App of the Year 2016.
Products used by Franz Messenger
Explore the tech stack and tools that power Franz Messenger. See what products Franz Messenger uses for development, design, marketing, analytics, and more.
Marketing & Sales 1
Marketing & Sales 1
SendinblueEmail, SMS, Chat, CRM, appointment scheduling and more, all-in-one platform to help you grow your business through building stronger customer relationships.
5.0 (4 reviews)
Brevo handles Franz's email, including our newsletter, The Franz Telegraph. It's reliable, genuinely easy to live in, and EU-based, which matters to us. It kept our launch comms flowing without a hitch.
LLMs 1
LLMs 1

Mistral AIOpen and portable generative AI for devs and businesses
5.0 (40 reviews)
Also considered:
Mistral powers Franz's cloud AI option. As a European team that treats data residency as non-negotiable, having a frontier model we can run inside the EU rather than shipping conversations across the Atlantic is exactly what we needed. Fast, capable, and privacy-friendly by default.

Gemini 3.1 Flash-Lite