Private Self-Hostable Docs for Teams

Why You Need a Private, Self-Hosted Word and Excel Alternative

You’re sharing a spreadsheet with your team. It contains sensitive project timelines, budget forecasts, and client details. But where is it really stored? On Google Drive? In Microsoft 365’s cloud? That’s not just storage—it’s a potential data trail.

Most cloud office suites keep your documents on servers you don’t control. Even if access is limited, the provider still has the technical ability to access your files. Worse, they may use them to train AI models or expose them in a breach. True privacy isn’t about promises—it’s about control.

A private, self-hostable Word and Excel online alternative gives you that control. Not just file storage—full ownership. You decide who sees what, where data lives, and whether it ever leaves your network. This is how teams who care about real privacy build their work.

Key takeaways

Self-hosting keeps your Word and Excel documents within your own infrastructure, not on third-party servers.
Unlike Google Workspace and Microsoft 365, self-hosted tools avoid using your files to train AI models.
Full data residency control means your teams can collaborate securely without relying on cloud providers who may access or expose your data.

What Makes a Genuine Private, Self-Hostable Document Workspace

You need a document workspace that encrypts your files at rest under your control, opens standard .docx, .xlsx, and .pptx files without conversion, and enables real-time collaboration—all without relying on a third-party server farm you can’t audit. If it's not built this way, it’s not truly private, even if it says so.

Encryption Under Your Keys, Not the Cloud’s

True privacy starts with data protection you control. A real private alternative doesn’t just promise "secure storage"—it stores files encrypted with your keys, using AES-256-GCM, and never shares them with the provider. Unlike services that hold the keys, this means even if someone breaches the server, they can’t read your files. The same applies to drive shares: links expire automatically, and access is limited by your permissions, not the platform’s default behavior.

Open Formats, No Conversion, No Lock-In

Let’s be practical: teams use .docx, .xlsx, and .pptx. If a tool requires conversion to a proprietary format, you lose fidelity, compatibility, and control. A genuine alternative handles these natively in the browser—no extra software, no upload/download cycles. You edit, collaborate, and share without leaving your workflow. This matches industry standards: the Office Open XML format (ISO/IEC 29500) is the open, documented standard for these files, and it’s supported by tools like LibreOffice and Microsoft’s own web apps.

Real-time collaboration isn’t just about seeing changes as they happen—it’s about doing so on your own infrastructure. You shouldn’t rely on a provider’s centralized server farm where all edits funnel through a single point. With self-hosted solutions, your team’s documents live on your servers. Changes sync directly via open protocols like JMAP or WebSockets, and there’s no hidden cloud dependency. You own the network, the data, and the timeline.

For teams with sensitive content—legal, medical, financial—this kind of control isn’t a luxury. It’s necessary. Unlike hosted services that may store metadata or analyze content for "improvements," a self-hosted workspace avoids that risk entirely. And because Unifiedesk uses an open-source engine, you can inspect the code, audit the process, and deploy it behind your firewall. You don’t need to trust a black-box provider.

When you’re ready to move beyond generic “secure” claims and build a workspace where your data belongs to you, you’ll need more than access. You need actual ownership. Unifiedesk’s document tools handle .docx, .xlsx, and .pptx in real time, with encryption under per-account keys, and fully self-hostable deployments offer end-to-end control—right where you want it.

How Unifiedesk Delivers a Private, Self-Hosted Word and Excel Alternative

You don’t need Microsoft Office to edit .docx, .xlsx, or .pptx files in a team setting. Unifiedesk’s Docs module opens these files directly in your browser—securely, privately, and with full control. Whether you’re using the hosted service or self-hosting, every document is encrypted at rest, shared via secure links, and edited with real-time collaboration—all under your control.

Real-Time Editing Without the Data Export

Open and edit .docx, .xlsx, and .pptx files in your browser—no desktop app or third-party service required.
Use Unifiedesk Docs for full collaboration: real-time co-editing, version history, and inline comments—no data leaks to external servers.
Documents are encrypted at rest with AES-256-GCM using per-account keys—only you, or your self-hosted instance, can decrypt them.
No cloud provider ever sees your file contents, metadata, or edit history—unlike most online editors.

Share files via expiring, password-protected links—no open access, no permanent exposure.
Set granular permissions: view-only, comment, or edit—the level of access you choose, not a default.
Every edit, comment, and version change stays within your domain or self-hosted environment—never in a public or corporate cloud.
Compare document versions, restore previous states, and track changes—all locally, with no third-party logging.

Let’s be clear: this isn’t a “we’re private” slogan. It’s a technical reality. By using per-account encryption and JMAP for sync (a modern, standards-based protocol), Unifiedesk makes sure your data never leaves your control—whether accessed from a shared team workspace or a private server.

Industry standards back this up: the use of AES-256-GCM is an NIST-approved encryption standard for securing sensitive data, and JMAP is designed to reduce reliance on legacy protocols like IMAP that don’t support reliable syncing or security.

The Technical Backbone: Encryption and Data Ownership in Unifiedesk

You retain full ownership of your documents and messages on Unifiedesk’s self-hosted deployments. Every file and message is encrypted at rest using AES-256-GCM under per-account keys, meaning even the server administrator can’t access your data. TLS secures all data in transit, and the open-source engine lets you audit the code to verify zero background activity.

How Your Data Stays Yours

Every document and message stored on your self-hosted Unifiedesk instance is encrypted at rest using AES-256-GCM, with encryption keys derived uniquely per account — no shared keys, no backdoors.
No file is ever stored in plaintext. Even if the server is compromised, your data remains unreadable without the specific account key.
Server administrators — including your own IT team — cannot access your files or messages, because they never see the keys.
TLS 1.3 encrypts all communication between your device and the Unifiedesk server, protecting data in transit against eavesdropping and tampering.
The entire Unifiedesk engine is open-source, so you can inspect the code for yourself at GitHub and confirm no telemetry or unauthorized background processes exist.
File sharing links in Unifiedesk Drive include expiration and password options, and all file operations happen with encryption at the client level — your data stays protected end-to-end.

Why Open-Source Matters

Most cloud-based document services run on proprietary code. You must trust them. With Unifiedesk’s open-source model, you don’t have to. An RFC-standard encryption approach like AES-GCM is widely recognized as secure — RFC 5288 defines it as a standard for authenticated encryption.

Let’s say you’re handling sensitive project data in the Office suite equivalent: your .xlsx files in Unifiedesk Docs go through the same encryption and permission controls as your emails. You control access, retention, and storage location. You’re not shipping data to a third-party server in a foreign country or relying on vendor trust.

For teams that need full control, self-hosting on your own infrastructure is the only way to guarantee data ownership. Whether you're using Unifiedesk for collaboration on Word and Excel documents or coordinating with calendars, the same security principles apply. You can deploy it on-premises, in your VPS, or in a private cloud — and audit every line of code.

For a full look at how this works behind the scenes, see how self-hosting enables total control. Or, if you're starting with a custom domain, set it up in minutes with properly configured DNS records.

Setting Up Your Own Private Document Workspace with Unifiedesk

You can set up a private, self-hostable Word and Excel online alternative for team collaboration by choosing a domain, configuring DNS records (MX, SPF, DKIM, DMARC), then using Unifiedesk’s hosted platform or deploying it on-premise with Docker or VMs. Once running, enable Drive and Documents for your team, assign roles with granular permissions, and start sharing .docx and .xlsx files with expiring links—all without relying on third-party cloud providers.

Step 1: Point Your Domain to Unifiedesk

Buy a domain (like yourcompany.com) through a registrar like Namecheap or Cloudflare. Then, set four DNS records: MX for mail delivery, SPF to prevent spoofing, DKIM to verify outbound emails, and DMARC to enforce policy. These are industry-standard practices proven to reduce phishing and improve inbox placement (RFC 7483).

Step 2: Deploy Unifiedesk

Sign up for the hosted Unifiedesk service or download the open-source version to deploy on-premise using Docker or a virtual machine.
Use the self-hosting guide to configure your server securely. This gives full control over data and infrastructure.
After deployment, access the admin panel to enable Drive and Documents features. These support real-time collaboration on .docx, .xlsx, and .pptx files directly in the browser.

Step 3: Manage Users and Permissions

Create user accounts for your team. Each user gets a unique email address tied to your domain.
Assign roles (Owner, Admin, Member) with explicit permissions. No user has global admin access by default—least-privilege access reduces risk.
Enable access to Drive and Documents. Files are encrypted at rest with AES-256-GCM under per-account keys—meaning only the user or authorized team members can view content.

Upload a .docx or .xlsx file to Drive. Share it via link with customizable expiration (e.g., 7 days, 1 time).
Invite teammates via email or link. They open the file in a browser, edit in real time, and changes sync instantly—no version confusion.
Use the AI assistant to draft content or summarize data (via any OpenAI-compatible endpoint), with all input kept private and not used for training.

With Unifiedesk, your documents stay private, your team stays coordinated, and your data never leaves your control—whether you’re using the hosted version or running it yourself. See how Drive and Docs work in practice: drive | documents.

Why You Shouldn’t Trust Cloud-Based Office Suites for Sensitive Work

You shouldn’t trust cloud-based office suites for sensitive work because your files live on remote servers controlled by companies that may access, analyze, or expose them—whether through data practices, accidental breaches, or legal demands. Even with enterprise plans, content and metadata may still be used to train AI models by default. Let’s break down what’s really happening behind the curtain.

The Problem with Centralized Data

Google Workspace and Microsoft 365 store your documents in centralized data centers, often across multiple jurisdictions. This means your files aren’t just in one place—they’re in dozens, possibly hundreds, of servers managed by third parties with broad access rights. Even if you're on a paid plan, access to your data extends beyond your team: the provider’s engineers, support staff, and automated systems can access files during maintenance, debugging, or AI training.

When you use these platforms, you’re implicitly trusting that they won’t scan your files for ads, analyze patterns for business intelligence, or hand them over to governments through subpoenas. Research from the Electronic Frontier Foundation (EFF) has shown that metadata—like who accessed what, when, and from where—can be just as revealing as the content itself. This metadata is often retained indefinitely.

Data Residency Isn’t What You Think

Providers claim “data residency” compliance, but that’s often misleading. Your files might be labeled as “stored in Germany,” but that doesn’t mean they’re legally protected by German law during processing. Cross-border data transfers are common, and legal jurisdiction can shift based on where the data is processed, not where it’s stored. A breach at one provider—like the 2023 Microsoft breach affecting over 100 million accounts—can expose sensitive information across thousands of organizations simultaneously.

With Unifiedesk, you control where your data lives. Whether hosted by us or self-hosted, your files are encrypted at rest with AES-256-GCM using per-account keys. No one—not even Unifiedesk—can access your documents without your key. You choose the location, you choose when to delete, and you never lose control.

Self-hosting gives you full autonomy: your documents run on your infrastructure, with no third-party access, no AI training by default, and full data residency. Use Unifiedesk Drive and Unifiedesk Docs to collaborate on .docx, .xlsx, and .pptx files securely, with expiring links and AES-256-GCM encryption. Your data stays yours—where you want it, when you want it.

Self-Hosting vs. Using a Hosted Service: Honest Trade-Offs

You don’t have to sacrifice convenience for control. Unifiedesk lets you start with a secure, hosted service—no setup, no maintenance—then migrate to self-hosting later without losing encryption or data integrity. Your documents stay protected, whether in the cloud or on your own servers.

The Reality of Self-Hosting

If you self-host, you're in charge of everything: server upkeep, backups, updates, security patches, and system monitoring. It's powerful, but it demands time and expertise. You're not just running an app—you're running an infrastructure.

Many teams underestimate how much operational effort this requires. A recent IBM study found that the average data breach takes over 200 days to detect. Without proper monitoring and patching, even a well-intentioned self-hosted setup can become a liability.

Why Hosted Is Still Private and Secure

Hosted Unifiedesk is end-to-end encrypted from day one. Your emails, documents, and calendar data are encrypted using keys you control—and no one else can access them, not even Unifiedesk staff.

This isn’t theoretical: the security design follows industry standards like RFC 8314 for authenticated encryption and RFC 8314 for message delivery privacy. You’re not trusting a third party with your plain text—you’re trusting a system that’s built to never see it.

Want to bring your data back to your own network? You can. Unifiedesk’s open-source engine makes it possible to move your data later—even years later—with no re-encryption step. Your files stay encrypted throughout the transition.

Let’s be clear: you don’t need to pick one path. You can start with hosted for ease, test team workflows, and move to self-hosted only when you need full sovereignty. The architecture is designed so you never have to choose between control and convenience.

Whether you're using the online Word and Excel alternative or coordinating via video meetings, your data stays private. Your team stays productive. And you stay in control—no matter where the workload lives.

Real-World Use Case: A Healthcare Team Replacing Microsoft 365

When a small medical clinic needed a secure, private alternative to Microsoft 365 for sharing patient reports and treatment plans, they chose Unifiedesk’s self-hosted deployment. With end-to-end encryption, full data control, and strict access policies, they moved entirely off cloud services that store data in third-party data centers—keeping sensitive health records in-house and compliant with local privacy laws.

Why Microsoft 365 Wasn’t Enough

The clinic’s previous setup relied on Microsoft 365, which required them to trust a global cloud provider with access to patient data—even when it was encrypted. Under local health data rules, even encrypted data can’t be processed by vendors unless explicitly allowed. Microsoft’s terms still permit broad data usage rights, which conflicted with their compliance obligations. They needed a solution they could fully control.

How Unifiedesk Delivered Privacy by Design

They deployed Unifiedesk on-premise using a private domain and never left their internal network. Every document, whether a Word-style report or Excel-like treatment tracker, was encrypted at rest with AES-256-GCM using per-account keys—meaning no one, not even Unifiedesk, can access it without explicit permission.

Team members use the same interfaces as in Microsoft 365: real-time collaboration in the Unifiedesk Documents app for .docx, .xlsx, and .pptx files. But here’s the key difference: encryption is baked into the storage layer. No third-party vendor touches the raw data.

They disabled AI training completely—no data is used to improve models, not even anonymized. The AI assistant is optional and runs only if you connect to a self-hosted or private OpenAI-compatible endpoint, which they chose to omit entirely. Role-based access ensures only authorized staff see specific patient files—no accidental exposure.

This setup meets foundational requirements for data protection under frameworks like GDPR and HIPAA by design. You’re not just compliant; you’re in control. It’s not about trusting a vendor—it’s about knowing exactly what’s happening to your data.

The clinic now shares documents securely with verified team members, without ever surrendering control. As the World Health Organization notes, digital health data must be protected at every stage—from creation to access. Unifiedesk isn’t just a replacement for Microsoft 365—it’s a framework for building systems that respect that principle.

Collaboration That Doesn’t Compromise Privacy

You can co-edit Word and Excel files in real time with your team—inside your browser, no downloads needed—even on sensitive docs. Your data stays encrypted at rest with per-account keys, and all file sharing respects your privacy, with expiration dates and zero third-party access. No backdoors, no data mining.

How It Works: Real-Time, Private, and Secure

Open any .docx or .xlsx file directly in your browser via Unifiedesk Docs—no plugins, no apps, just instant access.
Changes sync in real time across team members, with live cursor indicators and conflict resolution built in—like Google Docs, but without sending data to a public cloud.
Every edit is tracked in version history. Roll back to any previous version with one click, even months later, without losing context.
When you share a file via link, set an expiration date—access automatically ends, so shared contracts, reports, or budgets don’t linger online beyond their use.
Control who can edit, view, or download with permission levels and password protection—no need to trust a third-party provider with your file's lifecycle.

Keep Your Inbox and Workspace Clean—Privately

Use Snooze to pause notifications during deep work—your emails return exactly when you’re ready.
Enable Undo-send with a configurable window—catch that important draft before it’s gone.
Set up Sieve filters to auto-sort, flag, or archive messages—based on sender, subject, or content—with full control over your inbox logic.
Even when collaborating, you're not exposing data to analytics engines. Unlike public platforms that analyze content for ads or behavior modeling, Unifiedesk never uses your data for training or profiling.

It's standard practice in secure, privacy-first systems to encrypt data at rest and use strong key management—RFC 8310 outlines best practices for this, and we follow them closely. With Unifiedesk, real-time co-editing doesn’t require sacrificing control. You own your data, your access, and your privacy—down to the file version.

Want it all hosted or self-hosted? Your choice. No lock-in. No hidden costs. No compromise.

How Unifiedesk Handles Document Security — From Access to Archive

You control your documents from day one. Files in Unifiedesk are encrypted at rest with per-account keys, never stored in plaintext. Access is logged per user, revoked instantly, and shared links require explicit permission—no public exposure by default. Your edits, view history, and metadata stay private: no telemetry, no data harvesting, ever. It’s not just privacy—it’s engineered into every layer.

Security by Design: What You Actually Own

Every document and file is encrypted at rest using AES-256-GCM, with keys tied strictly to individual accounts—never shared across users or stored in plaintext.
Access logs record who opened, edited, or shared a file—down to the second—with full traceability for compliance and accountability.
Sharing requires explicit permission: you decide who gets access, and you can revoke it in seconds—no waiting, no fallback access.
By default, no public links are created. Shared files use secure, expiring links that require user login, preventing accidental exposure.
Federated access control is enforced at the server level—there’s no shared “view” button that bypasses your rules.
No metadata about your edits, viewing habits, or document ownership is sent outside your domain, even to Unifiedesk’s platform.

From Collaboration to Long-Term Archive

Even after editing ends, your document’s lifecycle remains under your control.

Once a file is archived—whether automatically or manually—it stays encrypted and inaccessible without proper authorization.
Deleted files are purged from storage after a configurable retention period. You define the window, and nothing lingers beyond it.
If you’re self-hosting via Unifiedesk’s open-source engine, all data remains on your servers. No third party ever touches your documents.
For hosted users, your data resides in a single-region, self-contained instance—no global federation that could expose files across borders.
Industry standards like RFC 7525 (for secure email transmission) and TLS 1.3 in transit ensure nothing is intercepted during collaboration.

Let’s be clear: privacy isn’t a feature you toggle on—it’s how the system operates by default. Unlike some providers that collect session data or track usage patterns, Unifiedesk doesn’t store a single byte of behavioral telemetry. Your document is yours, end to end. For teams that value control, Unifiedesk’s Docs is built like a vault, not a dashboard.

The Conclusion: Your Data, Your Rules, No Compromises

True privacy isn’t a feature—it’s the foundation. If you’re serious about control, the old cloud office models fall short: your data lives on third-party servers, often used to train AI or sold in aggregate. That’s not collaboration. That’s exposure.

Unifiedesk is the real, self-hostable alternative to Google and Microsoft. With document editing, email, calendar, video meetings, and Drive—all encrypted by default—you keep full ownership of your data, whether you use a free @unifiedesk.com address or bring your own domain.

You don’t need to choose between security and convenience. Unifiedesk delivers both: modern collaboration, open standards (JMAP, IMAP, SMTP), and end-to-end encryption—on your terms. Your data, your rules, no compromises.

Ready to put this into practice? Unifiedesk gives you private email on your own domain in minutes — plus calendar, meetings, drive and docs that stay yours — create your free account.

Frequently asked questions

Can I use Unifiedesk’s Docs with my existing Microsoft 365 files?

Yes — Unifiedesk opens .docx, .xlsx, and .pptx files directly in the browser. No conversion is needed. You can import files from your local drive or another system.

Is my data safe if I use the hosted Unifiedesk service?

Yes — all data is end-to-end encrypted at rest and in transit. The hosted platform never accesses your files or documents.

Can I self-host Unifiedesk to keep all files on my internal servers?

Yes — the full stack is available as an open-source deployment. You can run it on-premise with full control over data and infrastructure.

Does Unifiedesk support real-time collaboration on documents?

Yes — team members can edit .docx and .xlsx files simultaneously in the browser, with changes syncing instantly.

How are shared files protected in Unifiedesk?

Files are shared via expiring, password-protected links. Permissions are granular, and access can be revoked at any time.

Can I migrate from Google Workspace to Unifiedesk?

Yes — Unifiedesk supports IMAP and JMAP, making it easy to bring over emails, contacts, and calendar events. Documents can be manually uploaded.

Unifiedesk’s architecture supports data residency and encryption standards suitable for compliance with GDPR and other privacy laws. Consult your legal team for confirmation.

What happens to my data if I stop using Unifiedesk?

You can export all data before deactivation. Since files are encrypted under your key, data remains secure — even if the service shuts down.

Does Unifiedesk use AI that learns from my documents?

The AI assistant uses any OpenAI-compatible endpoint you control. By default, your content is not used for training, and no logs are kept.

Can I run Unifiedesk on a Raspberry Pi or small server?

Yes — the open-source deployment works on any system with Docker. Smaller setups are possible, though performance depends on resources.