luckycloud

luckycloud is a Berlin-based zero-knowledge encrypted cloud-storage product operated by **luckycloud GmbH** at Solmsstraße 26, registered with the Charlottenburg Local Court under HRB 169276 B (VAT DE301776461; managing director Luc Mader). The product traces back to 2007 when Mader built an online platform at his Berlin university to share study materials with friends; the commercial company was founded in 2015 and serves SMBs and consumers across DACH. The product line covers luckycloud One (consumer), Teams, Business, and Enterprise tiers with client-side encryption as a default feature across all plans. For an EU-sovereignty audit luckycloud is one of the cleanest pure-German listings in the directory. The infrastructure is **fully owned and operated** by the company itself — luckycloud GmbH creates, manages, and maintains the IT stack independently — across three ISO 27001 / BSI-certified German data centres in **Berlin, Nuremberg, and Frankfurt**. The product is built on open-source software (the file-sync stack uses luckycloud's own in-house Sync Client which replaced an earlier Seafile-based stack; OnlyOffice powers document editing) and follows a strict **zero-knowledge principle with triple-encryption layering** — vendor cannot access plaintext customer data. Trust signals include TÜV Süd certification, NETZSIEGER recognition, "Deep Tech" certification, eco Award 2019, and Alliance for Cyber Security membership. Founder-led, no VC/PE investors. Pricing was not directly captured at audit (the /en/pricing path returned 404; main pricing surface is on /pricing or /preise on the German site); the model is paid SMB-and-up with no consumer freemium tier observable. Best fit: German and DACH SMBs and consumers wanting a fully-German alternative to Dropbox / OneDrive / Google Drive with own-DC infrastructure, zero-knowledge encryption, and a small founder-led counterparty. Together with Filen, Cryptee, Internxt, Proton Drive, Tresorit, Nextcloud (self-host), and kDrive, luckycloud rounds out the directory's 5/5 file-sharing shortlist.