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    Modern Excel Formulas in Java: Dynamic Arrays, LET, and Spill Behavior
    POSTED BY Jean Yen · Jul 26, 2026
    Dynamic arrays, LET, and spill behavior are now part of the Excel files enterprise users bring into your application. Here's what changed and how Keikai 7 supports it. continue reading
  • application
    Keikai 7 vs Keikai 6: Benchmark Results
    POSTED BY Jean Yen · Jul 26, 2026
    Keikai 7 replaces the Apache POI-based backend with a native Rust engine. Here's what that means for opening files, saving files, and bulk cell operations. continue reading
  • application
    Building Spreadsheet-Powered Financial Reporting Applications with Java
    POSTED BY James Chu · Jul 8, 2026
    How Keikai Spreadsheet and ZK help teams turn spreadsheet-based financial reporting into a controlled Java web application workflow. continue reading
  • application
    Embedded Spreadsheet for Java: Let Users Edit Excel Files Inside Your Web App
    POSTED BY Matthieu Duchemin · Jul 6, 2026
    How to host one authoritative workbook inside your own Java web app as an embedded Keikai spreadsheet, and let many users collaborate on it as part of the business process. continue reading
  • application
    How to Preserve Excel Formatting in a Web Application
    POSTED BY Matthieu Duchemin · Jun 24, 2026
    This article tells you formatting is imported and managed in Keikai. continue reading
  • guide
    Embedded vs hosted spreadsheets
    POSTED BY Jean Yen · May 21, 2026
    Keikai vs Google Sheets and Microsoft 365: Embedded Component or Hosted Service? continue reading
  • guide
    Spreadsheet Component vs Grid Component
    POSTED BY Jean Yen · May 19, 2026
    Spreadsheet or Grid - How to Choose for Your Web Application continue reading
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