Best browser-first collaboration alternative

Google Workspace is one of the closest alternatives to Microsoft 365 for general business productivity and collaboration.

It combines Gmail, Drive, Docs, Sheets, Slides, Meet, Calendar, and other business applications.

Its browser-first document collaboration model can be attractive for teams that frequently create and edit shared documents.

However, Microsoft 365 also offers real-time co-authoring.

The best collaboration experience depends on the specific documents, users, and workflows.

Current Google Workspace pricing

Published US prices checked November 12, 2026. Introductory promotions may be available to eligible customers. Annual and flexible billing have different commitment rules. Source: Google Workspace pricing .

Google's standard annual-billing business prices currently match Microsoft's with-Teams Business Basic, Standard, and Premium rates at the same headline price points.

That does not mean the editions have identical features.

In particular, Microsoft Business Standard includes full desktop Office.

Google emphasizes browser-based applications with supported offline functionality.

Microsoft also offers without-Teams subscriptions that can be less expensive than the equivalent Google Business Standard list price.

Best for privacy-focused business collaboration

Proton is a privacy-focused business email and collaboration provider based in Switzerland.

Its product offerings have expanded beyond encrypted email.

Proton Workspace now includes supported applications for email, calendars, file storage, documents, spreadsheets, meetings, VPN, and password management.

That makes it more substantial as a productivity suite than older comparisons may suggest.

Current Proton business pricing

US prices per user/month, billed annually. Source: Proton business pricing .

Workspace Standard includes 1 TB storage per user and supported meetings for up to 100 participants.

Premium increases the published storage allowance to 3 TB per user and supports higher meeting limits, retention policies, and additional AI features.

Encryption needs qualification

Proton's privacy architecture is a meaningful product differentiator.

However, not every outgoing email is automatically end-to-end encrypted.

Messages between Proton Mail users receive automatic end-to-end encryption.

Ordinary messages sent to external non-Proton recipients are not automatically end-to-end encrypted by default.

Proton supports additional secure-delivery mechanisms, including password-protected messages and PGP interoperability.

Organizations with legal, regulatory, or contractual confidentiality requirements should also evaluate retention, discovery, data residency, auditability, and external communication.

Privacy-oriented architecture does not automatically satisfy every compliance requirement.

Best free desktop office approach

Not every business needs a single vendor providing email, documents, chat, meetings, and device management.

Some organizations primarily need locally installed word processing, spreadsheets, presentations, and business email.

LibreOffice is a credible option for those requirements.

It includes free desktop applications such as Writer, Calc, and Impress.

These applications support common Microsoft Office file formats, including DOCX, XLSX, and PPTX.

A business can pair LibreOffice with a separate email provider, such as Zoho Mail or Fastmail.

This can create a relatively low-cost desktop productivity environment.

Compatibility is not absolute

LibreOffice can open and save many Microsoft Office files.

However, complex documents may not behave identically.

Important areas to test include:

• Advanced spreadsheet formulas
• VBA macros
• Power Query and other data connections
• Pivot tables and specialized models
• Third-party Excel add-ins
• Complex Word formatting
• PowerPoint layouts, fonts, and animations

LibreOffice has partial VBA compatibility.

Some macros may work with suitable settings, while others require modification.

Microsoft Office and LibreOffice do not use identical application object models.

Therefore, saying every macro-enabled Excel workbook will break would be inaccurate.

The correct approach is to test actual business files before migrating.

Collaboration requires additional planning

Standalone LibreOffice does not provide the same integrated cloud co-authoring environment as Microsoft 365 or Google Workspace.

Calc supports a limited shared-spreadsheet workflow.

Other desktop collaboration scenarios generally rely on document locking or additional infrastructure.

A business can add online collaboration through a suitable platform, such as Nextcloud with a supported office editing component.

However, that introduces additional hosting, administration, and support requirements.

Best for self-hosting and data control

Nextcloud is different from purchasing a conventional hosted productivity suite.

Its open-source community software can be deployed on infrastructure operated by the organization or a chosen provider.

Nextcloud offers file synchronization, sharing, calendars, contacts, communication, and collaboration capabilities.

With suitable supported office components, it can provide browser-based document editing and collaboration.

This may be attractive when an organization needs greater infrastructure and data-location control.

However, free software does not mean free operations.

What self-hosting costs

A production Nextcloud deployment may require:

• Server hosting and storage
• Database administration
• Backups and disaster recovery
• Security updates and patch management
• Monitoring and availability management
• Office collaboration infrastructure
• Identity and access management
• Support and maintenance

The organization needs to budget for those expenses even when the community software license has no per-user charge.

Enterprise support is separate

Nextcloud offers paid enterprise subscriptions for organizations requiring commercial support and enterprise services.

Its published Enterprise Standard starting price is approximately €71.29 per user annually, with a 100-user starting threshold at that pricing level.

Higher enterprise editions have additional capabilities and costs.

The twenty-five-user cost model should not assume access to that enterprise subscription at the same terms.

Business email is still a separate decision

Nextcloud can connect to email services through supported integrations.

But it is not a complete independent hosted business email replacement by itself.

The organization still needs an email provider or appropriately managed mail infrastructure.

Best if business email is the real requirement

Some Microsoft 365 customers primarily use Outlook email, calendars, and contacts.

If employees rarely use the included Office productivity applications or Teams, purchasing a complete suite may not be necessary.

Zoho Mail and Fastmail are worth evaluating for email-focused requirements.

Current email-only pricing

Published US annual-billing prices as of November 12, 2026. Custom-domain requirements, storage, and email-client support differ by edition. Sources: Zoho Mail pricing and Fastmail pricing .

Zoho Mail

Zoho Mail Lite starts at $1 per user per month on annual billing.

Its 5 GB mailbox allowance can be sufficient for employees with relatively limited email requirements.

The 10 GB edition costs $1.25, while Premium costs $4 and provides additional email, storage, retention, and security functionality.

Zoho also offers a limited Free business email edition for up to five users on one custom domain, subject to region and eligibility.

The Free edition does not include IMAP, POP, or ActiveSync.

Zoho Mail supports TLS, encryption at rest, and optional message-level encryption such as OpenPGP on eligible paid editions.

Supported S/MIME functionality is available on higher plans, including Mail Premium.

However, message-level end-to-end encryption requires appropriate configuration and compatible recipients.

Fastmail

Fastmail focuses on email, calendars, contacts, and compatible email-client workflows.

Standard costs $5 per user per month on annual billing and includes 50 GB of mail storage plus 10 GB of file storage.

Professional costs $9, with larger storage allowances and additional business functionality.

Basic costs $3 but has an important custom-domain qualification.

For custom-domain addresses on Basic users, the business account requires at least one Standard or Professional user.

Therefore, an all-Basic custom-domain business should not be assumed to qualify without that license arrangement.

Email-only does not mean suite-equivalent

Neither Zoho Mail Lite nor Fastmail Standard replaces all Microsoft 365 functionality.

Businesses may still need Office applications, shared file storage, collaboration, identity management, device security, and communications tools.

The total cost needs to include those additional services.

Best if the real problem is business applications

Zoho One is different from the other alternatives.

It is not simply a Microsoft 365 productivity replacement.

Instead, it provides a broad collection of applications spanning CRM, finance, sales, marketing, customer support, collaboration, and operations.

This can be useful when the actual business problem involves disconnected systems rather than Word or Excel.

Zoho One's current pricing

US annual-billing prices. Standard monthly-billed pricing is higher. All Employee and Flexible User have materially different eligibility requirements. Source: Zoho One pricing .

Essentials is not the complete suite

Zoho One Essentials is a lower-priced bundle of selected business applications.

It does not provide the complete Zoho One Standard application package.

Businesses should verify the included applications, edition limits, and access rules before using Essentials in a pricing comparison.

All Employee versus Flexible User

Zoho One Standard costs $37 per employee per month under its annual All Employee licensing model.

However, that rate requires licensing the organization's full eligible employee population.

It is not an unrestricted per-active-user price.

Flexible User licensing costs $90 per selected user per month, billed annually.

This can be more appropriate when only a subset of employees needs the applications.

For example, twenty-five All Employee licenses cost $11,100 annually, assuming the organization has exactly twenty-five eligible employees.

Twenty-five Flexible User licenses would cost $27,000 annually.

The correct choice depends on the actual workforce and user requirements.

Zoho Office Desktop is also available

Eligible Zoho One subscribers can use Zoho Office Desktop.

That includes supported Writer, Sheet, Show, and PDF Editor desktop functionality.

The availability of installable office applications makes Zoho One more relevant for businesses evaluating a broader replacement for their software stack.

However, the same Microsoft Office compatibility considerations still apply.

Integrated does not mean one database

Zoho One provides centralized administration and supported integrations across its applications.

That can help connect CRM, accounting, service, marketing, and operational workflows.

However, the applications do not automatically operate from one identical shared database.

Integration, record mapping, automation, and permissions still require configuration.

The advantage is broad application coverage and supported cross-application workflows, not the absence of implementation work.