Coder
AGPL-licensed platform for self-hosted cloud development environments: provision Terraform-defined workspaces and govern AI coding agents on infrastructure you control, with no per-seat SaaS fees.
Kai A. Hartung
CryptPad
Zero-knowledge encrypted office suite (docs, sheets, slides, forms): the server stores only ciphertext, so even the admin can't read your files. AGPL, EU-based; the full suite is free, only managed hosting is paid.
Mem0
A memory layer for AI agents: extracts and recalls facts across sessions so the LLM stops re-sending full history. Apache-2.0, self-hostable on Postgres and Qdrant; SSO and audit logs are Enterprise-gated.
Chroma
AI-native embedding database for RAG: runs embedded via pip or as a Docker server, with portable SQLite/Parquet storage for clean data exit. Apache-2.0, but the OSS core ships without built-in authentication.
Velero
Kubernetes-native backup and disaster recovery: snapshot cluster state and volumes to your own object storage, then restore or migrate namespaces. Apache-2.0; ownership is shifting from Broadcom to the CNCF.
Rook
CNCF-graduated Kubernetes operator that runs Ceph as declarative, self-healing storage: object, block, and file from cluster disks. Fully open; the cost is the Ceph expertise it abstracts but never removes.
OpenEBS
CNCF Kubernetes storage that runs in userspace, with pluggable engines from simple local volumes to replicated NVMe-oF. Apache-2.0 core, but external KMS and the management GUI sit in DataCore's commercial tier.
Longhorn
CNCF-governed, fully open block storage for Kubernetes: highly available volumes with encryption, synchronous replication, and S3/NFS backup. No open-core paywall: the only paid tier is optional vendor support.
SeaweedFS
Apache-2.0 distributed storage exposing S3 and POSIX, tuned for billions of small files and simpler to run than Ceph. Day-2 safety nets like self-healing repair and point-in-time recovery sit behind a paid Enterprise tier.
Nothing to Build. Nothing to Fight Over.
On June 17, Germany and France signed a joint definition of digital sovereignty. Every past attempt, from Quaero to Gaia-X, died the same way: a fight over whose national champion wins. This time there is nothing to own. They are writing the rules instead, which bind all 27 EU members, not two.
Overleaf
AGPLv3 self-hosted collaborative LaTeX editor for academic and scientific writing. The free Community Edition omits SSO, per-user sandboxing, and Git sync, which sit behind the paid Server Pro tier.
Voicebox
Local-first AI voice studio powered by Qwen3-TTS and six more engines. Clones voices and synthesizes speech fully on your machine, with no per-character metering, though your own GPU does the work.
Vikunja
AGPLv3 self-hosted task manager: List, Kanban, Gantt, and Table views, free for unlimited users. Catch: admin panel, audit logs, and time tracking stay Pro-gated even when self-hosted.
Ceph
Unified distributed storage that serves one cluster as S3 object, block, and POSIX file. Foundation-governed, standards-based, with no per-GB cloud fees, but it demands real cluster-ops expertise.
Olares
AGPL-3.0 personal cloud OS: a sandboxed, K3s-based app platform for self-hosting files, services, and local AI on hardware you own. Trade-offs are a dedicated-hardware footprint and AGPL network copyleft.
Europe left Microsoft. The Documents didn't.
Euro-Office launched as Europe's sovereign alternative to Microsoft 365. Then it made Microsoft's OOXML the default format, not the open ODF standard. Why that default quietly hands the document layer back to Microsoft, and why open formats, not European servers, are the real test of sovereignty.
Open Code has no Nationality.
Europe just unveiled its long-delayed tech sovereignty package. Even a big tech lobbyist found opposing it dispiriting. The real fight now is between two kinds of sovereignty: the kind that builds walls, and the kind you can read, run, and trust.
Your Data has a Nationality.
A Dutch 'sovereign' cloud almost became American overnight, and only a last-minute government veto stopped it. Real digital sovereignty was never just about where your data sits. It is about whose courts can reach it, and Europe's billion-euro plan still misses the point.
SnapOtter
AGPLv3-or-commercial image toolkit: 50+ tools plus local AI for background removal, upscaling, and OCR in one Docker container. Images never leave your hardware. SaaS embedding needs a paid license.
OpenWhispr
MIT voice-to-text dictation that runs Whisper and Parakeet models fully on-device: hotkey, speak into any app, nothing leaves your machine. Cloud sync, agent mode, and SSO sit behind paid tiers.
Qdrant
Apache-2.0 vector database in Rust for RAG and semantic search, fully self-hostable with no copyleft strings. Multi-AZ high availability, SSO, and audit logs are gated to the managed Qdrant Cloud.