Best Free Office Software UK 2026 - 7 Top Microsoft Office Alternatives Compared
Written by Calvin Lo, Founder of Aphelios Software | Updated August 2026 | 9 min read
Aphelios Online Office Suite - free all-in-one alternative to Microsoft Office
Microsoft Office costs £5.99 to £18.10 per user per month. For a 5-person UK small business, that is £360 to £1,086 per year - before you add email, cloud storage or business tools. Free office software eliminates that cost while delivering 90% of the features most SMEs actually use.
This guide compares the 7 best free office software options for UK small businesses in 2026, testing document compatibility, spreadsheet formulas, collaboration, UK hosting and GDPR. We evaluate each on real-world business use, not just feature lists.
If you want a single platform that combines office tools with inventory, POS and CRM, see our Online Office Software UK and document editor.
Quick Comparison: 7 Best Free Office Suites UK
| Office Suite | Best For | Offline | UK Hosted | Business Tools | Price |
|---|---|---|---|---|---|
| Aphelios Online Office Suite | UK SMEs | Requires internet | ✓ Azure UK | ✓ Inv/POS/CRM | £0 |
| LibreOffice | Offline desktop | ✓ Fully offline | Local | ✗ | £0 |
| Google Docs/Sheets | Browser collab | ✗ | US | ✗ | £0 |
| Microsoft 365 Free | Light use | Limited | EU/US | ✗ | £0 (5GB) |
| Zoho Office | Zoho users | ✗ | EU/US | CRM only | £0 |
| WPS Office | MS lookalike | ✓ | China | ✗ | £0 + ads |
| OpenOffice | Legacy | ✓ | Local | ✗ | £0 |
1. Aphelios Online Office Suite - Best for UK Small Businesses
Why it wins for UK SMEs: Unlike pure office suites, Aphelios bundles documents, spreadsheets, image and video editors with inventory, POS, CRM and Stripe in one login. Your price lists in Sheets link to live stock, your proposals in Docs pull customer data from CRM, and your product images are AI-edited without leaving the platform.
All office tools are included free (£0 for 2 users) in the same subscription that powers your shop. UK-hosted on Azure, GDPR compliant, with workspace sharing (IsPublic) and secure ShareToken links. See spreadsheet software and image editor.
2. LibreOffice
The best offline alternative. Writer, Calc and Impress handle docx/xlsx/pptx with good fidelity, fully offline, no account needed. Ideal if you work on a single PC without collaboration needs. Downsides: dated UI, no real-time co-editing, no cloud, manual updates.
3. Google Docs, Sheets & Slides
Excellent for real-time browser collaboration and comment threads. Free with 15GB Drive. Weaknesses: US data hosting, requires Google account, limited offline, no desktop power features, and you still need separate tools for inventory, POS and CRM. Compare Aphelios vs Google Workspace.
4. Zoho Office Suite
Zoho Writer, Sheet and Show are clean, fast browser editors with good docx/xlsx fidelity and real-time collaboration. Free with 5GB, integrates with Zoho CRM and Zoho Books. Limitations: best within Zoho ecosystem - standalone, you lack UK-hosted business tools, and the free tier shows Zoho branding. Support is EU/US-hosted.
5. Microsoft 365 Free (Web)
Word, Excel and PowerPoint on the web with 5GB OneDrive. Good for light viewing and quick edits with Microsoft fidelity. Limitations: 5GB cap, ad-supported, no desktop apps, limited offline, and no business tools. Paid Microsoft 365 is £5.99-£18.10/user/mo. See Aphelios vs Microsoft 365.
6. WPS Office Free
Closest Microsoft lookalike - tabbed interface, Writer/Spreadsheets/Presentation handle docx/xlsx well and work offline. Free tier is ad-supported and shows WPS watermark on PDF export. Data hosted in China/Singapore - check your GDPR risk assessment. Good for home users, risky for customer data.
7. Apache OpenOffice
The original free office suite (Writer, Calc, Impress). Fully offline, no account, mature. Downsides: infrequent updates, dated UI, weaker docx/xlsx fidelity than LibreOffice, no collaboration, no mobile apps. Only choose if you need a legacy offline fallback.
3-Year Cost Comparison for a 5-Person UK Business
Free office software saves more than the licence - it removes per-user scaling. Here is the 3-year total for office tools alone (excluding email/storage add-ons):
| Suite (5 users) | Year 1 | Year 2 | Year 3 | 3-Year Total |
|---|---|---|---|---|
| Aphelios Online Office | £0 | £0 | £0 | £0 |
| Microsoft 365 Standard | £702 | £702 | £702 | £2,106 |
| Google Workspace Starter | £408 | £408 | £408 | £1,224 |
| LibreOffice | £0 | £0 | £0 | £0 |
Aphelios £0 is for office tools within the free 2-user plan; paid Aphelios plans from £29.99/mo include office + business tools. Microsoft/Google prices as of 2026 Business Standard/Starter annual.
Migration Guide: Switch Without Losing Files
- Inventory your files: Export a list of docx/xlsx/pptx from OneDrive/Drive. Tag customer-facing vs internal.
- Test fidelity: Import 5 complex files (price list with formulas, proposal with headers/footers and tables, stock sheet with multi-sheet) to Aphelios Office Suite. Check formulas, merges, TOC.
- Move in batches: Start with non-critical docs. Use drag-drop import for docx/xlsx, verify, then share via IsPublic workspace or ShareToken.
- Train for 15 minutes: Show team IsPublic vs Private, ShareToken revoke, and real-time co-editing with presence avatars.
- Keep Microsoft/Google as archive: Read-only access for 30 days, then cancel. No data loss.
UK Hosting & GDPR: What to Check
For UK SMEs, GDPR data residency matters. Aphelios is UK-hosted on Microsoft Azure (TenantId isolated, IsPublic/ShareToken controls, audit trail). LibreOffice/OpenOffice are local - data never leaves your device. Google/Microsoft/Zoho host in US/EU - you need a Data Processing Agreement, transfer impact assessment, and to inform customers. For price lists containing supplier costs or customer proposals, UK hosting simplifies compliance. See GDPR guide.
How to Choose
- Need offline + no cloud? Choose LibreOffice.
- Need browser collaboration only? Google Docs is simplest.
- Need office + business tools + UK hosting? Aphelios Online Office Suite is the all-in-one value choice - one login, one bill, UK data.
FAQ
Is free office software safe?
Yes if UK-hosted or offline. Aphelios (Azure UK) and LibreOffice (local) are safest. Check US hosting for Google/Microsoft if GDPR is a concern.
Can I open Word and Excel files?
Yes - all 7 options open docx/xlsx. Aphelios preserves headings, tables, formulas and multi-sheet via WordFileService/ExcelFileService.
How do I switch from Microsoft Office without losing formatting?
Export 5 complex files and import to Aphelios. Check merges, TOC and formulas. Keep Microsoft read-only for 30 days, then cancel. Most SME docs migrate with 95% fidelity.
What about PowerPoint presentations?
Use Google Slides, LibreOffice Impress or Canva for decks. Aphelios focuses on documents/spreadsheets plus image/video - export PDFs for presentations. No PowerPoint clone needed for most SMEs.
Which free suite is best for GDPR?
Aphelios (UK Azure, TenantId isolation) and LibreOffice (local) are best. Google/Microsoft require DPAs for US transfers.
Try the Free Office Suite Built for UK Business
Documents, spreadsheets, images and video - plus inventory, POS and CRM. From £0. No Microsoft licence needed.
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