Collabora Office is an enterprise-ready and long term supported version of LibreOffice. It is available for Linux (x86-64), Windows (x86-64) and macOS. Collabora Office 25.04 is based on the upstream LibreOffice 25.2 source code, where all our code is contributed to. If you want to try out Collabora Office you can request a free demo or test the latest snapshot. For business use, please read about the support & services Collabora Productivity offers, and visit the page featuring our collaborative online office solution Collabora Online based on Collabora Office.

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Collabora Office Classic 25.04.9

Released on: 06 February 2026

New Feature

• Calc table styles provide instant formatting for data sets, offering Light, Medium, and Dark, or custom themes to improve readability. Located under the Table Design tab, these styles allow users to apply banded rows/columns, highlight headers, and add totals.
• Fixes & Improvements
  • Continued Fixing of file format interoperability problems that were detected by automated test tools
    • Fixed: FILESAVE: XLSX – Handle labels in formulas ( tdf #170249)
    • Fixed: FILESAVE: XLS -> XLSX Import of external functions (tdf #170432)
    • Fixed: FILESAVE: XLS -> XLSX external references in Data Validation are not exported in workbook.xml (tdf #170452)
    • Fixed: Loading XLSX file with complex formula and comments slow (tdf#166684)
    • Fixed: FILEOPEN DOCX Overlapping redlines: character formatting on deleted text can not be rejected (tdf#168751)
    • Fixed:FILEOPEN DOCX Overlapping redlines: character formatting on deleted text can not be rejected (tdf#168737)
    • Fixed: FILESAVE: PPTX -> PPTX internal names are exported in custom shape geometry. (tdf#170035)
    • Fixed:FILESAVE: XLSX -> XLSX empty values in array formulas. tdf#170201
    • Fixed: XLS→XLSX export with empty font-name. tdf#170189
    • Fixed: FILESAVE: PPTX -> PPTX SmartArts don’t preserve hyperlinks. Tdf#170094
    • Fixed: FILESAVE PowerPoint’s Title and Content layout exported incorrectly. Tdf#170102
    • Fixed: FILEOPEN PPTX Text placeholder objects background becomes None instead of solid white (tdf#169456)
    • Fixed default filter selection when opening Office Open XML presentation files (tdf #165180)
    • FILESAVE PPTX: PPT/PPTX files with OLE object animations can’t be opened in PowerPoint after saving as PPTX (tdf #169088)
  • Fixed: Restart required dialogs buttons are not readable (tdf #169839)
  • Fixed: Validity lists without error messages now allow unlisted values to be entered (tdf #160096)
  • Fixed: In Dark Mode, when leaving chart back to Calc, label font becomes black (tdf #167737)
  • Fixed: Zoom reverts back to 100% when going to next slide in edit mode (cool #13863)
  • Fixed: Display of content with dark mode
  • Fixed: Color palette iconview has unwanted name and extra width with gen VCL Plugin

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Collabora Office Classic 25.04.7

Released on: 14 November 2025

Fixes and Improvements

• Fixed: Impress Interop: PPT->PPTX invalid time value in <p:tmAbs>
• Fixed: Impress Interop: Set max limit on margin while importing PPT and exporting it to PPTX
• Fixed: CALC: Validity list problem with check input (Ministry)
• Fixed: Crash on export to PDF
• Fixed: PPT->PPTX Bullet positioning and paragraph alignment changes after conversion
• Fixed: Writer Interop: Improper export stdPr dataBindings tdf #106442

Collabora Office Classic 25.04.6

Released on: 03 October 2025

New Features

• New spreadsheet functions (known from Excel 2024): TEXTAFTER, TEXTBEFORE, TEXTSPLIT, VSTACK, HSTACK, CHOOSECOLS, CHOOSEROWS, EXPOAND, DROP, TAKE, WRAPROWS, WRAPCOLS, TOROW, TOCOL
• Support xl/xmlMaps.xml in XLSX files (no data loss on roundtrip) (tdf#167689)

Bugfixes

• All fixes from upstream LibreOffice 25.2 up to Sep 30, 2025

Collabora Office Classic 25.04

Released on: 24 July 2025

This is the major release of Collabora Office. Find more details on the new features in the official announcement.