PageTranslate

LibreOffice plugin for translating whole documents, which retains some formatting.

Page Numbering Addon

Simplifying page numbering in LibreOffice/OpenOffice

Oxygen icon theme

Oxygen icon theme as shipped with LibreOffice prior version 5.4

Oxford English Spellchecker

An extension providing a spellchecker for the Oxford variant of British English.

otkr tools 3(merge cell/enter move)

Calc用の拡張機能です 

Ossetian Spellchecker (os-RU)

Ossetian spelling (Iron dialect) for use in LibreOffice. Version 1.5.

Orthos - Greek Spellchecker

Modern Greek spell checker dictionary, thesaurus for OpenOffice/LibreOffice and Mozilla projects.

Oriya Spellchecker Plus

Extract mis-spelled words and suggest words from dictionary. 

Oriya Spellchecker

By Linux user community

Origami CD Envelope

A simple template to create a CD envelope using a standard Letter sized piece of paper and requiring just four folds.

Organon

Organon is a tool for novelists and scientific authors.

Organizer/Filofax A5

A template for creating your own refills for Agenda/Organizer/Filofax.

Orden de Compra

Plantilla Básica para una orden de compra en Calc, en español.

Orcamento pessoal

O Modelo de orçamento pessoal e um modelo de planilha para ajudar a controlar o seu orcamento pessoal durante o ano. The Personal Budget Model is a model spreadsheet to Help Control Your Personal Budget during the year.

Orange Ribbon

Optimal Column Width RI

Optimal Column Width Including Right Indent

Optical Store Letterhead Template

The letterhead template design is for Optical Store Business. The letterhead is in an editable format and can be used by anyone with ease. Download the template and customize it with personal details.

OpenStreetMap Presentation

A LibreOffice Impress template using OpenStreetMap based background useful for presentation about this project.

OpenOffice.org2GoogleDocs - export & import to Google Docs, Zoho, WebDAV

Export, Update and Import your documents to and from Google Docs, Zoho and WebDAV servers.

OpenClipart.org integration

This extension integrates OpenClipart.org directly in Writer. See this video on Youtube : http://www.youtube.com/watch?v=UJ4WLATXE4M

OpenCards

A free flashcard learning software for ppt-files

Open Recent Document

Open the last saved document automatically on startup. Same as (File - Recent Documents - first file) 

Open PLA (Accounts system)

Open PLA is a double-entry accounting system for registering Purchase Ledger transactions (invoices and bank payments). It may be suitable for small-businesses and / or for personal / family use. Features of the template include macro buttons for openi

Opal

Modify Alfresco documents directly from the LibreOffice user interface.

Op-art kockak

Op-art kockák Vasarely nyomán, Logo forráskóddal.

Op-art cubes

Op-art cubes, and the Logo source code.

OOslovimaC

Испис словима броја, погодно за рачуне и слично.
Converts number to words (in Serbian).

OOoTranslit

OOoTranslit is an extension for LibreOffice Writer and Calc to help you transliterate between various scripts used in Serbia (Serbian Cyrillic, Serbian Latin, CIRSCII, YUSCII, Tanjug newspaper script)

OOoTranslit

Macro for Serbian users to transliterate Serbian (and familiar) text and spreadsheet documents.

OOoSVN

A project to provide change control for LibreOffice documents (OpenDocument and *.sx*) via subversion under Unix. Can check in internal changes in files and allows users to recover any previous version, view logs and compare with older versions.