The libexif C library allows applications to read, edit, and save EXIF data as produced by digital cameras.

The libpano13 package contains the backend library written by the Panorama Tools project for building panoramic images from a set of overlapping images, as well as some command line tools.

Entangle is an application which uses GTK and libgphoto2 to provide a graphical interface for tethered photography with digital cameras. It includes control over camera shooting and configuration settings and 'hands off' shooting directly from the controlling computer.

This is the library backend for gphoto2. It contains the code for PTP, MTP, and other vendor specific protocols for controlling and transferring data from digital cameras.

Ansel is an photo-editing software for digital artists, designed to help you achieve your own interpretation of raw digital photographs.

LibRaw is a library for reading RAW files obtained from digital photo cameras (CRW/CR2, NEF, RAF, DNG, and others).

Gphoto2 is a set of command line utilities for manipulating a large number of different digital cameras. Through libgphoto2, it supports PTP, MTP, and much more.

Hugin is an easy to use panoramic imaging toolchain with a graphical user interface. It can be used to assemble a mosaic of photographs into a complete panorama and stitch any series of overlapping pictures.

Digital photographs are not ideal. Of course, the better is your camera, the better the results will be, but in any case if you look carefully at shots taken even by the most expensive cameras equipped with the most expensive lenses you will see various artifacts. It is very hard to make ideal cameras, because there are a lot of factors that affect the final image quality, and at some point camera and lens designers have to trade one factor for another to achieve the optimal image quality, within the given design restrictions and budget. But we all want ideal shots, don't we? So that's what's Lensfun is all about: rectifying the defects introduced by your photographic equipment.

This package provides tools to import photos and videos from cameras, phones and memory cards and generate meaningful file and folder names.

This package provides RawTherapee's highly optimized RAW processing routines.

This package contains the class loader class used by Composer to build its autoloading feature. This package is used by the composer-build-system to build its own store-aware autoloading feature.

PHP (PHP Hypertext Processor) is a server-side (CGI) scripting language designed primarily for web development but is also used as a general-purpose programming language. PHP code may be embedded into HTML code, or it can be used in combination with various web template systems, web content management systems and web frameworks.

This package provides a compiler and assembler that target the Piet graphical programming language.

piet-assembler converts Piet assembler instructions (e.g., push, add, switch, outn) and directives into an executable netpbm image of the corresponding Piet program.

piet-compiler compiles a C-like high-level language into assembly source understood by piet-assembler. It supports common arithmetic and boolean logic operators (though not bitwise manipulation), flow control (if, for, while), recursive functions, in-line assembler, and input/output intrinsics. The only supported data type is the integer.

The language is documented only by the compiler's Perl source code and the included samples.

Npiet is an interpreter for the Piet programming language. Instead of text, Piet programs are pictures. Commands are determined based on changes in color.

This package includes:

1. npiet, a Piet interpreter with debugging capabilities

2. npiet-foogol, a program that builds a Piet program from Foogol, an Algol-like language

3. npietedit, an editor for Piet programs.

pkg-config is a helper tool used when compiling applications and libraries. It helps you insert the correct compiler options on the command line so an application can use gcc -o test test.c `pkg-config --libs --cflags glib-2.0` for instance, rather than hard-coding values on where to find glib (or other libraries). It is language-agnostic, so it can be used for defining the location of documentation tools, for instance.

pkg-config is a helper tool used when compiling applications and libraries. It helps you insert the correct compiler options on the command line so an application can use gcc -o test test.c `pkg-config --libs --cflags glib-2.0` for instance, rather than hard-coding values on where to find glib (or other libraries). It is language-agnostic, so it can be used for defining the location of documentation tools, for instance.

pkgconf is a program which helps to configure compiler and linker flags for development libraries. It is similar to pkg-config from freedesktop.org. libpkgconf is a library which provides access to most of pkgconf's functionality, to allow other tooling such as compilers and IDEs to discover and use libraries configured by pkgconf.

drawterm is a client for connecting venerable systems to Plan 9 systems. It behaves like a Plan 9 kernel and will attempt to reconstruct a Plan 9 terminal-like experience from a non-Plan 9 system.

Plan 9 from User Space (aka plan9port) is a port of many Plan 9 programs from their native Plan 9 environment to Unix-like operating systems.

Diod is a multi-threaded, user space file server that speaks 9P2000.L protocol.

drawterm is a client for connecting venerable systems to Plan 9 systems. It behaves like a Plan 9 kernel and will attempt to reconstruct a Plan 9 terminal-like experience from a non-Plan 9 system.

GNU Plotutils is a package for plotting and working with 2D graphics. It includes the C library libplot and the C++ libplotter library for exporting 2D vector graphics in many file formats. It also has support for 2D vector graphics animations. The package also contains command-line programs for plotting scientific data.

Guile-Charting is a Guile Scheme library to create bar charts and graphs using the Cairo drawing library.