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Spreadsheet Solutions

Full-stack Excel for developers
Backend API + interactive spreadsheet UI. End to end.
Axyra API — backend processing Keikai Spreadsheet — embeddable UI component
Every spreadsheet need your application has — covered.
Whether you're generating reports, letting users edit in the browser, or exporting pixel-perfect PDFs — we have the building block for each step.
Sound familiar?
mail
Excel passed around by email
Manual exports, error-prone version control, no audit trail — and someone always edits the wrong copy.
memory
Apache POI runs out of memory
Higher memory use on large files, no built-in PDF output, and limited support for modern Excel formulas.
construction
LibreOffice headless breaks in Docker
Every upgrade is a gamble. Containerised deployments are a nightmare. One font change and the layout falls apart.
edit
Browser editing breaks down
Formatting gets lost, Excel features don’t behave the same, and users still fall back to desktop files.
We help you turn Excel into part of your application workflow.
Backend
Axyra API
Backend Excel processing — in Java
  • Generate Excel and PDF output with charts, styles, and perfect formatting
  • Run ~500 functions server-side — no Excel or Office needed
  • Stream large exports with constant memory.
  • Supports charting, conditional formatting, and password protection
  • Familiar workbook-style API for teams coming from Apache POI
Learn about Axyra →
Frontend
Keikai Spreadsheet UI
Embeddable spreadsheet UI for your web application
  • Embed a full Excel-compatible spreadsheet in any Java web app
  • Users edit directly in the browser — data stays in your system
  • No desktop software required for end users
  • Full Excel experience: formulas, charts, and conditional formatting
  • Seamlessly integrate with your backend systems and workflows
Learn about Keikai →
Keikai + Axyra = End-to-end Excel workflow

Use both together and every part of your Excel workflow is covered — from interactive browser editing to pixel-perfect PDF output.

edit_note
User edits in browser
Keikai Spreadsheet UI
→
settings
Backend processes & validates
Axyra API
→
picture_as_pdf
PDF output or saved to DB
Production-ready output
Financial reporting
Front-end data entry with Keikai → Axyra validates and recalculates → compliant PDF output
Quote workflow
Sales fills in browser → approval triggers Axyra → PDF quote sent to customer automatically
Personalised reports at scale
Collect data → batch-generate hundreds of individual Excel or PDF reports with Axyra
See the Combo Demo →