HansaChat is a German internal-communication platform, a company chat positioned as a fixed-price alternative to Slack and Microsoft Teams. It is operated as a sole proprietorship by Igor Tverdokhleb from Lübeck (Barkentinenstr. 20, 23558 Lübeck); the imprint lists no GmbH/UG legal form, Handelsregister (HRB) number, or VAT ID, so it is an early-stage, founder-run product rather than an incorporated company.
Its core differentiator is pricing: HansaChat charges per workspace, not per user. Paid plans run €99/month (Starter: unlimited users and messages, 25 GB), €199/month (Company: 100 GB, webhooks/integrations, audio-video calls) and €299/month (Business: admin controls, advanced search), plus storage add-ons and a limited free Demo (2,000 messages, 1 GB, deleted after 30 days of inactivity). For teams that have outgrown Slack's per-seat math the flat model can be dramatically cheaper at scale; the founder's own framing, which readers can keep in mind, is "a company chat without per-user pricing plans." SSO is included on every plan.
On sovereignty the stack is deliberately tight and all-European. Core application data, databases and file storage run exclusively on Hetzner Cloud in Germany (Falkenstein and Nuremberg) on a private Kubernetes cluster, with TLS in transit and encryption at rest (encrypted Longhorn volumes for MySQL, encrypted MinIO for files). Sub-processors are publicly enumerated in the privacy policy and are all EU: Hetzner (DE, hosting), EmailLabs / Vercom S.A. (PL, transactional email) and Creem / Armitage Labs OÜ (EE, merchant-of-record billing). The only US touch-point is Sentry for error monitoring (stated to carry no PII and being migrated to self-hosted Loki/Grafana), giving minor CLOUD Act exposure. There is no end-to-end encryption (operators retain technical access to workspace content) and as of February 2026 the vendor's security page states backups and disaster recovery are not yet in place, a real maturity caveat for procurement.
Best fit: small DACH teams that want a transparent, EU-hosted Slack replacement at a predictable flat price and don't need certifications or a signable DPA today. No public ISO 27001 / BSI C5 certification and no separate customer-signable DPA exist yet, which caps the compliance score; both would be the obvious additions as the product matures.