Libidn2 is an internationalized domain library implementing the IDNA2008 specifications. Libidn2 is believed to be a complete IDNA2008 implementation, but has yet to be as extensively used as the original Libidn library.

C library to manipulate Phidgets

Libvisio is a library that parses the file format of Microsoft Visio documents of all versions.

MyThes is a simple thesaurus that uses a structured text data file and an index file with binary search to look up words and phrases and to return information on pronunciations, meanings and synonyms.

Libetonyek is a library that parses the file format of Apple Keynote documents. It currently supports Keynote versions 2 to 5.

The libnumbertext library provides language-neutral NUMBERTEXT and MONEYTEXT functions for LibreOffice Calc, available for C++ and Java.

Libexttextcat is an N-Gram-Based Text Categorization library primarily intended for language guessing.

Libwps is a library for importing files in the Microsoft Works word processor file format.

Hyphen is a hyphenation library using TeX hyphenation patterns, which are pre-processed by a perl script.

libepubgen is an EPUB generator for librevenge. It supports librevenge's text document interface and--currently in a very limited way--presentation and vector drawing interfaces.

Libmwaw contains some import filters for old Macintosh text documents (MacWrite, ClarisWorks, ... ) and for some graphics and spreadsheet documents.

Libpagemaker is a library that parses the file format of Aldus/Adobe PageMaker documents. Currently it only understands documents created by PageMaker version 6.x and 7.

Libe-book is a library and a set of tools for reading and converting various reflowable e-book formats. Currently supported are: Broad Band eBook, eReader .pdb, FictionBook v. 2 (including zipped files), PalmDoc Ebook, Plucker .pdb, QiOO (mobile format, for java-enabled cellphones), TCR (simple compressed text format), TealDoc, zTXT, ZVR (simple compressed text format).

Libmspub is a library that parses the file format of Microsoft Publisher documents of all versions.

Libfreehand is a library that parses the file format of Aldus/Macromedia/Adobe FreeHand documents.

libstaroffice is an import filter for the document formats from the old StarOffice (.sdc, .sdw, ...).

Libabw is a library that parses the file format of AbiWord documents.

libqxp is a library and a set of tools for reading and converting QuarkXPress file format. It supports versions 3.1 to 4.1.

Orcus is a library that provides a collection of standalone file processing filters. It is currently focused on providing filters for spreadsheet documents. The library includes import filters for Microsoft Excel 2007 XML, Microsoft Excel 2003 XML, Open Document Spreadsheet, Plain Text, Gnumeric XML, Generic XML. It also includes low-level parsers for CSV, CSS and XML.

Liblangtag implements an interface to work with tags for identifying languages as described in RFC 5646. It supports the extensions described in RFC6067 and RFC6497, and Extension T for language/locale identifiers as described in the Unicode CLDR standard 21.0.2.

Unoconv is a command-line utility to convert documents from any format that LibreOffice can import, to any format it can export. It can be used for batch processing and can apply custom style templates and filters.

Unoconv converts between over a hundred formats, including Open Document Format (.odt, .ods, .odp)), Portable Document Format (.pdf), HTML and XHTML, RTF, DocBook (.xml), .doc and .docx), .xls and .xlsx).

All required fonts must be installed on the converting system.

Ixion is a library for calculating the results of formula expressions stored in multiple named targets, or "cells". The cells can be referenced from each other, and the library takes care of resolving their dependencies automatically upon calculation.

LibCMIS is a C++ client library for the CMIS interface. It allows C++ applications to connect to any ECM behaving as a CMIS server such as Alfresco or Nuxeo.

Libwpd is a C++ library designed to help process WordPerfect documents. It is most commonly used to import such documents into other word processors.