Build your OUIS
System Information Open Source Urbanized.
Bunker assembles your 100% open source OUIS, a sovereign collaborative and office suite, an alternative to Microsoft 365 and Google Workspace, hosted in Europe. Mail, drive, video, ERP, CRM. Each building block is pre-configured, hosted on your own servers and yours to bring back in-house whenever you decide.
Microsoft 365 and Copilot stay under the US CLOUD Act
An office suite published in the US stays under US law, even hosted in Europe. The CLOUD Act lets US authorities order Microsoft to produce your data, wherever the servers sit, and Copilot adds exposure because it processes your content in clear text to generate its answers.
In March 2024, the European Data Protection Supervisor ruled the European Commission's use of Microsoft 365 non-compliant with data-protection rules. A sovereign collaborative suite, hosted in Europe and reversible, removes the problem at the root.
« No, I cannot guarantee it. »
"Open source always wins in the end."
For each open source solution deployed, Bunker contributes 5% of its revenue to the projects involved.
Contributed to open source
Revenue redistributed to open source projects your IS depends on. We guarantee the sustainability of your software components.
Vendor lock-in
Complete freedom to migrate or change providers at any time.
Digital commons
Contribution to the ecosystem and European digital commons.
Our tools catalog
A selection of open source tools, ready to be deployed on your infrastructure
Sites and content
Directus
A CMS without imposed interface, to manage your content with flexibility, from your own infrastructure.
Alternative to: Contentful, Strapi (cloud), Sanity
Webstudio
Build pixel-perfect websites without writing code, keeping control over the output and the hosting.
Alternative to: Webflow, Wix
ERP and BI
Odoo
Manage your business from A to Z: invoices, projects, CRM, HR... without depending on proprietary solutions.
Alternative to: SAP, Salesforce, Microsoft Dynamics
Metabase
Create dynamic dashboards from your data, without code. Your teams regain control over their analyses.
Alternative to: Power BI, Tableau, Looker
Security
Vaultwarden
Store and share your passwords securely with a Bitwarden-compatible solution, hosted on your servers.
Alternative to: LastPass, 1Password, Dashlane
DocuSeal
Create, send and sign your documents online with an open source solution. eIDAS compliant, complete API and embeddable components.
Alternative to: DocuSign, HelloSign, Yousign
FerrisKey
The open-source IAM written in Rust, OIDC-compatible with Keycloak. One single sign-on for every service, with sovereign, re-internalizable identities.
Alternative to: Okta, Auth0, Entra ID
Marketing and social media
Postiz
Schedule and publish your content on all your social networks from a single interface, without cloud intermediary.
Alternative to: Buffer, Hootsuite, Later
Matomo
Analyze your website traffic with a privacy-respecting solution. GDPR-compliant alternative to Google Analytics, data hosted in Europe.
Alternative to: Google Analytics, Adobe Analytics
Data and code
PostgreSQL
A robust, secure and open source database, suitable for critical applications.
Alternative to: Oracle, MySQL, Microsoft SQL Server
GitLab
Collaborate on your code, track versions, manage your projects without prying eyes.
Alternative to: GitHub, Bitbucket, Azure DevOps
GitLab Runner
Run your CI/CD pipelines on your own servers. Keep control over your builds, tests and deployments.
Alternative to: GitHub Actions, CircleCI, Jenkins
Observability
Grafana
Visualize your system, application or network metrics in real time.
Alternative to: Datadog, New Relic
Loki
Aggregate and query all your logs hassle-free, with sovereign performance.
Alternative to: Splunk, Elastic Stack
Tempo
Follow a request's journey through your system to better understand what's slowing down your services.
Alternative to: Jaeger, AWS X-Ray
Mimir
Store and leverage your metrics at scale with a resilient backend.
Alternative to: Prometheus (cloud), InfluxDB
Collaboration and storage
Nextcloud
Store, sync and share your files securely. Collaborate with calendar, contacts, video conferencing and more.
Alternative to: Google Drive, Dropbox, Microsoft 365
Private GPT
Give your teams an AI assistant hosted in France that queries your own documents without exposing them to US platforms.
Alternative to: ChatGPT Enterprise, Microsoft Copilot, Azure OpenAI
Chatwoot
Centralize customer support (chat, email, social media, WhatsApp) in a shared inbox, hosted in Europe, with an unlimited number of agents.
Alternative to: Zendesk, Intercom, Freshdesk
SFTPGo
Move files over SFTP, FTPS or WebDAV with fine-grained access control, backed by S3 storage.
Alternative to: rsync.net, AWS Transfer Family, WeTransfer Pro
Cal.diy
Open your slots and let people book a time, with an open-source Calendly alternative you host yourself.
Alternative to: Calendly, Doodle
Coming soonGokapi
Share large files with end-to-end encryption (E2EE). Set expiration and download limits.
Alternative to: WeTransfer, Send (Firefox), Swiss Transfer
Infrastructure
Proxmox
Manage your virtual machines and containers from a powerful open source platform.
Alternative to: VMware, Hyper-V
Headscale
Link your servers and laptops on an encrypted WireGuard private network, run by your own control plane.
Alternative to: Tailscale, Zscaler
France-Nuage (control-plane)
Control your infrastructure via API with our open source control-plane.
Alternative to: AWS, Azure, GCP
Ready to build your OUIS?
Let's discuss your needs and design together an 100% open source information system, sovereign and adapted to your organization.