There are several formats used to present geographic coordinates. For example:

The Math::Units module converts a numeric value in one unit of measurement to some other unit. The units must be compatible, i.e. length can not be converted to volume. If a conversion can not be made an exception is thrown.

Kiwix is an offline Wikipedia reader. libkiwix provides the software core for Kiwix, and contains the code shared by all Kiwix ports (Windows, Linux, OSX, Android, etc.).

Human feedback device service is a Dbus activated service that manages human feedback devices such as LEDs and vibrators on mobile devices.

Catmandu::I18N contains modules for handling text localisation within the Catmandu framework.

Libwebsockets is a lightweight pure C library for both websockets clients and servers built to use minimal CPU and memory resources and provide fast throughput in both directions.