KiDara – E2E-encrypted messenger for families & law firms
January 10, 2026
KiDara – E2E-encrypted messenger
A messenger that delivers privacy out of the box, built on Matrix/Synapse, end-to-end encrypted.
The product
End-to-end encrypted chat for families and professional use, with its own homeserver, E2E encryption and a subscription model for families and B2B law firms.
What was built
Messaging platform: Matrix/Synapse (free tier) with E2E encryption, own homeserver setup and federation disabled, designed to be TTDSG-compliant
Subscription model: Tiered model (Free/Organisiert/Organisiert+) with family plan, Stripe/Mollie, feature gating and B2B lawyer dashboard
Full-stack: Next.js + FastAPI + PostgreSQL/pgvector, Docker Compose for production deployment, CI/CD, GDPR- and RDG-compliant
