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.

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

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

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

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

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.

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

The libwpg project provides a library and tools for working with graphics in the WPG (WordPerfect Graphics) format.

Dragonbox generates a pair of integers from a floating-point number: the decimal significand and the decimal exponent of the input floating-point number. These integers can then be used for string generation of decimal representation of the input floating-point number, the procedure commonly called ftoa or dtoa.

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

LibreOffice is a comprehensive office suite. It contains a number of components: Writer, a word processor; Calc, a spreadsheet application; Impress, a presentation engine; Draw, a drawing and flowcharting application; Base, a database and database frontend; Math for editing mathematics.

Libzmf is a library that parses the file format of Zoner Callisto/Draw documents. Currently it only understands documents created by Zoner Draw version 4 and 5.

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

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

Librevenge is a base library for writing document import filters. It has interfaces for text documents, vector graphics, spreadsheets and presentations.

Libodfgen is a library for generating documents in the Open Document Format (ODF). It provides generator implementations for all document interfaces supported by librevenge: text documents, vector drawings, presentations and spreadsheets.

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.

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

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

LibreWolf is designed to increase protection against tracking and fingerprinting techniques, while also including a few security improvements. This is achieved through our privacy and security oriented settings and patches. LibreWolf also aims to remove all the telemetry, data collection and annoyances, as well as disabling anti-freedom features like DRM.

GNU libsigsegv is a library to handle page faults, which occur when a program tries to access an unavailable region of memory, in user mode. By catching and handling page faults, the program can implement pageable virtual memory, stack overflow handlers, and so on.

GNU libunistring is a library providing functions to manipulate Unicode strings and for manipulating C strings according to the Unicode standard.

The primary goal of this project is to define a portable and efficient C programming interface (API) to determine the call-chain of a program. The API additionally provides the means to manipulate the preserved (callee-saved) state of each call-frame and to resume execution at any point in the call-chain (non-local goto). The API supports both local (same-process) and remote (across-process) operation. As such, the API is useful in a number of applications.