The Best Excel Alternative in 2026 (That Keeps Your Data Private)
August 1, 2026 · 6 min read
Microsoft 365 keeps getting more expensive and Google Sheets keeps your data in the cloud. Here is the private, offline Excel alternative worth switching to in 2026.
Why look beyond Excel?
Microsoft Excel remains the industry standard for spreadsheets — but the price of entry keeps rising. Microsoft 365 now bundles Copilot into higher tiers, pushing the real cost of an “Excel-only” subscription well past what most individuals and small teams want to pay. Meanwhile, Google Sheets is free but stores your spreadsheets on Google's servers, which is a dealbreaker for financial models, client data and confidential business planning.
What makes a spreadsheet worth switching to?
A good Excel alternative should meet four tests: honest pricing, no watermarks, no export limits, and no requirement to upload your files. Most “free” tools fail the second and third tests — they monetize through limits, watermarking or selling cloud storage. That is why Rixoffice is different: free trial for new users, then simple pricing starting at $0.59/month, unlimited local spreadsheets, full .xlsx compatibility and offline editing — cancel anytime.
AI formulas without sending data anywhere
Spreadsheet AI is no longer a novelty — but how it runs matters. Copilot in Excel sends formula context to Microsoft's cloud. RixSheets runs AI at the block level on your device: describe the calculation in plain English and the AI writes the formula, including nested logic and array functions. On the Pro plan you can even run fully local models via Ollama, or bring your own OpenAI or Claude key. Your data never leaves the machine in either case.
Byte-preserving .xlsx compatibility
Switching tools used to mean risking corrupted files. RixSheets uses a byte-preserving engine: when you edit a spreadsheet, only the exact cells you change are altered, so files open perfectly in Microsoft Excel for colleagues who haven't switched. Heavy recalculation is handled by a custom-built Rust sidecar engine, which stays fast even on large datasets.
How to switch in three steps
1. Download Rixoffice for Windows, macOS or Linux — no sign-up required.
2. Open your existing .xlsx files and keep editing; formatting and formulas stay intact.
3. Pick a plan and add AI when you need it, starting at $0.59/month (shown in your local currency).
If you are evaluating options, compare feature-by-feature on our spreadsheet editor page or see our Rixoffice vs Microsoft 365 comparison.
Try Rixoffice today — download for Windows, macOS or Linux · see pricing in your currency
