vimix performs graphical mixing and blending of several movie clips and
   computer generated graphics, with image processing effects in real-time. 
   Its intuitive and hands-on user interface gives direct control on image opacity and
   shape for producing live graphics during concerts and VJ-ing sessions.
      Can read almost all video codecs (hardware accelerated for many),
   Open Sound Control remote control, live screen recoding. See docmentation in the github wiki.
    

vimix


      There are many ways to read comic books, and one of those that has become more
      common in recent years is on a computer. Peruse was created as a way to make
      exactly that as easy and pleasant as possible, and to simply get out of the
      way and let you read your comic books. One could say that it allows you to
      peruse your comic books at your leisure, but that would be a silly way of
      putting it - so, peruse your comic books at your leisure!
    
      
      One of the ways in which Peruse ensures your reading experience is as pleasant
      and effortless as possible is to allow you to simply pick up where you last left
      off. The welcome page in the application (first screenshot below) shows you your
      most recently read comics, and shows your progress through them. To pick up
      where you left off, simply tap the top left item and you will be taken right to
      the page you were reading before you had to stop.
    
      Features:
      
        Comic Book Archive (cbz, cbr, cb7, cbt, cba)
        Portable Document Format (pdf)
        ePub Books (epub)
        DeVice Independent files (dvi)
        DeJaVu (djvu)
        Compiled Help (chm)
      
    

Peruse


      Pure Data (or just "Pd") is an open source visual programming language for multimedia. Pure Data is developed by Miller Puckette since 1996 and you can find it on his official website along with the official documentation and other related resources. This is the official "Pd" or "main distribution" and it is also known as "Pd Vanilla".
    
      
      Think of Pd as a &lt;em&gt;Modular Synthesizer&lt;/em&gt; that is also a programming language.
    
      
      Pd's audio and MIDI functions are built-in as well as networking (e.g. using Open Sound Control), but there are a number of external libraries that allow you to do graphics, interface hardware and much more...
    
    

Pure Data (Pd)

A real-time graphical programming environment for live interactive computer music

pwall is modern style photo/video viewer and organizer.It shows the folders of your photos/videos main directory in the left pane and a photowall in the right. The photowall is a scrolling panel of square thumbnails giving a preview of each photo/video.Loading and unloading of this scrolling panel is made dynamicaly, viewing page by viewing page like smartphones do.It also allows you to have basics management of photos/videos (change dates, copy a group of photos to another directory, delete, share, get GPS data...). Clicking on a photo opens it in fullscreen mode. You can continue your navigation in this mode with left and right keys. I use it as an alternative to Shotwell.

pwall

Oh My SVG let you export unoptimized SVG files into smaller versions.It lets you preview and tweak the parameters to obtain a satisfactory result before saving.It removes or approximate information that is not required for rendering.Remember that Oh My SVG removes information and metadata that may be useful, do not overwrite your original/source SVG files.

Oh My SVG

Pixyne application has a simple and intuitive interface:- With a click on photo you can mark to drop it in the trash.- In a list view, clicking on a row button opens the corresponding photo.- In advanced mode you may set or correct the EXIF shooting date, crop and ajust photo.- Pixyne automaticaly stores the current state of the folder so you can undo changes at any time. This is useful when working with a large number of photos and when you need to close the application in order to continue working later.- Made changes will not actually be applied until you save.- When you save changes, you can change all file names to EXIF shooting date format.

pixyne

Quickly review photo folders, safely delete bad and similar shots, fix the shooting dates

Image Roll is a simple and fast GTK image viewer with basic image manipulation tools. Written in rust.

Image Roll

Image viewer with basic image manipulation tools

Inspired by the famous game Run-Escape.
      All your stats are shown in the title bar. Smash presents and pots to get health drops, I would start on Zombies, Green Flies, Baby Dragons, Skulls and Whirlwinds. Check the readme on github.com/mrbid/TuxScape for more info.
      Mouse locks when you click on the window, press ESCAPE to unlock the mouse.
      
        Left Click = Attack
        Right Click = Target Weapon / Engage Jet Pack
        Mouse Scroll = Zoom in/out
        W,A,S,D / Arrow Keys = Move
        L-SHIFT / R-CTRL = Sprint/Fast
        Space = Jet Pack
        1-9 = Weapon Change
        C = Toggle between First and Third person
        V / MOUSE4 = Toggle between stickey/toggle mouse clicks (good for afk)
      
    

TuxScape

ComicReaderUltimate (CRU) is the modern successor to ComicReaderPro, one of the earliest programs for reading comics in CBR, CBZ or JPEG format on Windows, Mac and Linux.Multi-threaded for fast loadingGPU accelerated renderingView single or double pagesView pages separately or in a continuous scroCRU is highly configurable - you can tweak values to find the most natural reading experience. However, it is also highly *opinionated*.  It always runs fullscreen because that is the best way to read comics.  There is limited GUI because you are expected to learn the mouse or keyboard controls.  There is no library browser because your operating system should already have file manager.CRU is optimized to be as fast and responsive as possible on modern systems without worrying if it will run on legacy hardware. This comes at the cost of memory usage - it is assumed you have at least 4GB of RAM and a modern GPU with 2GB of VRAM. (CRU makes some effort to optimize for battery power but performance comes first.)

ComicReaderUltimate

KGeoTag is a standalone geotagging program. Images can be associated with geographic coordinates by different means: On the one hand, a matching with GPX encoded geodata can be done, on the other hand, the coordinates can be set manually, either via drag and drop onto a map, via bookmarks or by manually supplying them. The coordinates can be stored in the images' Exif header and/or in XMP sidecar files.

KGeoTag

CoreImage is a lightweight app based on Qt Framework. This app is a part of C Suite.

CoreImage

A simple lightweight easy to use image viewer

Xpano is a photo stitching tool that focuses on simplicity and ease of use, major features include:Auto detection of groups of images that can be stitched into panoramasPreview + zoom + pan of the computed panoramasCrop mode, boundary auto fill, selectable projection typesExport of full resolution panoramas including exif metadata

Xpano

ImageFan Reloaded is a light-weight tab-based image viewer, supporting multi-core processing.
      ImageFan Reloaded features mouse and key-based interaction using:
      
        left mouse button for interacting with tabs and folders, and for selecting, opening, zooming in and out, and dragging images
        the right mouse button for returning from the opened image to the main view
        the mouse wheel for scrolling through folders and thumbnails, and for navigating back and forward through opened images
        the key Tab for cycling though active tabs
        the keys W-A-S-D, Up-Down-Left-Right, Backspace-Space and PageUp-PageDown for back and forward navigation through thumbnails and opened images
        the keys Enter-Escape for entering into and exiting from image display modes
      
    

ImageFan Reloaded

Light-weight tab-based image viewer, supporting multi-core processing

jdPixelUpscaler upscales images by simply replacing one pixel with several of the same color. For example, if you set the scaling factor to 2, one pixel becomes 2x2 pixels of the same color. No attention is paid to the surrounding pixels or to transitions. For certain graphics (mainly pixel art or similar in very low resolution), this may give better results than other methods.
      Command line arguments and a D-Bus interface are provided for automation.
    

jdPixelUpscaler

Filmulator accepts raw files from cameras and simulates the
   development of film as if exposed to the same light as the camera's
   sensor.
    

Filmulator

A GUI adaptation of Filmulator, a film emulator with all of the positives and none of the negatives


            Tachidesk-VaadinUI is a UI for the Tachidesk Server. It is written in Java and uses Vaadin as UI framework.
        
    

Tachidesk-VaadinUI

Pineapple Pictures is a lightweight and easy-to-use image viewer that comes with a handy navigation thumbnail when zoom-in, and doesn't contain any image management support.
    

Pineapple Pictures

Tsuki-tag is an aggregated anime imageboard browser and collection manager, which lets you browse multiple image sources in a combined view, search images using tags, download images into configured workspaces (folders) with customization and filename templating support, and manage or curate multiple collections of your chosen images.Tsuki-tag can inject EXIF metadata information (tag, image attributes, copyright notice, etc.) into the images during downloading or saving, with an additional option to convert non-JPG images to JPG images which support EXIF metadata. This could provide artists with a great way of creating and organizing a collection of images for reference, or to manage and appropriately annotate their own images with author and copyright information.Features include:Browse an aggregated collection of images retrieved from a number of pre-configured image providers in a paginated view.Fine-tune which providers are queried, along with what type of images should be shown ('safe', 'questionable', 'explicit').Search for images using tags and tag combinations with wildcard support, exclude images from being displayed using another set of tags with wildcard and regular expression support.Hover over images for a quick look at their attributes and information, or select them to keep them available for batch operations.Open images in separate tabs and continue browsing.Multi-selection system with support for batch operations (batch add to / remove from workspaces and online lists, batch update or annotate).Create online lists, which are a local collection of image metadata which can be browsed just as the online providers.Create workspaces, which on top of the features of online lists, lets you download images to configured folders with customizable behavior.Import local files or folders to workspaces, or convert one of your image folders to a workspace.Create metadata groups, which are a collection of information such as author, copyright notice, description and notes, which can be directly injected into the EXIF metadata of the JPG images files during workspace operations.Convert non-JPG images to JPG for EXIF support.Add, edit, or remove image tags before workspace or online list operations.Create tag rules for your online lists or workspaces with wildcard and regular expression support, to automatically process an image across multiple lists.Automatically add or remove tags when an image is added to, or removed from a workspace or online list, with templating support.Specify the file names of files to be downloaded to a workspace, with templating support.Global tag blacklisting with wildcard and regular expression support.Several other features such as opening images in your default image editor, opening or copying the image website URL, re-downloading the image from the original provider, and more.

Tsuki-tag

Anime imageboard browser, aggregator, downloader, tagger, converter, collection manager. Browse and create your own collections, configure workspaces for image downloads with templating support.

Scan Tailor is an interactive post-processing tool for scanned pages. It performs operations such as page splitting, deskewing, adding/removing borders, and others. You give it raw scans, and you get pages ready to be printed or assembled into a PDF or DJVU file. Scanning, optical character recognition, and assembling multi-page documents are out of scope of this project.Scan Tailor is Free Software (which is more than just freeware). It’s written in C++ with Qt and released under the General Public License version 3. We develop both Windows and GNU/Linux versions.This project started in late 2007 and by mid 2010 it reached production quality. In 2014, the original developer Joseph Artsimovich stepped aside, and Nate Craun took over as the new maintainer.Scan Tailor is being used not just by enthusiasts, but also by libraries and other institutions. A few books processed by Scan Tailor even ended up on Google Books.

Scan Tailor

Interactive post-processing tool for scanned pages

GPS Correlate takes a GPS track stored by any of a number of GPS devices and phone apps and correlates the time stamp of a digital photo with the location of the track at that same moment. The location of the image is then stamped directly into the image file using the appropriate EXIF GPS tags. The resulting image then contains not just the time the photo was taken but its exact location, too. The location is used by various other applications and services (such as Google Photos) to display a map of where the photo was taken.
    

GPS Correlate

GPS Correlate attaches EXIF GPS location tags to images

You have to defeat the dragon. It takes 24 snowball hits to defeat the dragon. If Tux gets hit just once you have to start all over again! Snowballs will randomly spawn in one of the four grassy patches, Tux can only carry one at a time and cant throw a snowball unless he is standing still. Good luck!
      
        W,A,S,D / Arrow Keys = Move
        Space Bar = Throw Snowball
        C = Change camera view
      
    

Tux VS Dragon

The Wick Editor is a hybrid animation tool and coding environment, inspired by similar tools such as HyperCard, and Scratch. It's designed to be the most accessible tool for creating multimedia projects.

Wick Editor

A tool for creating games, animations and everything in-between!

A comic book converter with support for .cb*, .pdf, .xps, .epub, .mobi and directories. Images can be converted to JPEG, PNG, TIFF, WEBP, AVIF, JXL or 4-Bit BMP (16 colors) file format.

CBconvert

Color box to help developers and designers.
    

Coulr

Ikona is a design companion to help you design icons. It is designed to integrate with the KDE Plasma desktop.

Ikona

Ikona is a design companion to help you design icons


      Splash is a free (as in GPL) modular mapping software. Provided that the
      user creates a 3D model with UV mapping of the projection surface, Splash
      will take care of calibrating the videoprojectors (intrinsic and extrinsic
      parameters, blending and color), and feed them with the input video
      sources. Splash can handle multiple inputs, mapped on multiple 3D models,
      and has been tested with up to eight outputs on two graphic cards. It
      currently runs on a single computer but support for multiple computers is
      planned.
    
    

Splash

Mouse locks when you click on the game window, press ESCAPE or TAB to unlock the mouse.
      
        W,A,S,D = Move around based on relative orientation to X and Y.
        SPACE + L-SHIFT = Move up and down relative Z.
        Left Click / R-SHIFT = Place node.
        Right Click / R-CTRL = Delete node.
        Q / Middle Click = Clone texture of pointed node.
        R = Places node at your current position.
        E / F / Mouse4 = Toggle player fast speed on and off.
        1-7 = Change move speed for selected fast state.
        X + C / Slash + Quote = Change texture of pointed node.
        T = Resets player state to start.
        G = Gravity on/off.
        P = Toggle pitch lock.
        F3 = Save. (auto saves on exit or idle for more than 3 minutes)
        F8 = Load. (will erase what you have done since the last save)
        F10 = Export the VoxelPaint data to a zip file in $HOME/EXPORTS.
      
      To multiselect click and drag with Middle Mouse or Q. Fill the nodes with B or delete them with N. Middle Scroll or X+C to change texture. V to paste selected nodes to pointed position.
      Arrow Keys can be used to move the view around.
      Your state is automatically saved on exit.
      You can customize the 17 block tileset, in your dataPath you will find a tiles.ppm image file, edit this file and save it as a PPM with a P6 272 16 255 header. Krita or KolourPaint can edit PPM files.
      Sensitivity as the 1st command line parameter default is 0.003 `./voxelpaintpro 0.003`.
    

Voxel Paint

LPub3D is an Open Source WYSIWYG editing application for creating LEGO® style digital building instructions. LPub3D is developed and maintained by Trevor SANDY. It uses the LDraw™ parts library, the most comprehensive library of digital Open Source LEGO® bricks available (www.ldraw.org/) and reads the LDraw LDR and MPD model file formats. LPub3D is available for free under the GNU Public License v3 and runs on Windows, Linux and macOS Operating Systems. Portions of LPub3D are based on LPUB© 2007-2009 Kevin Clague, LeoCAD© 2023 Leonardo Zide and additional third party components. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this application. © 2015-2023 Trevor SANDY.

LPub3D

LPub3D - An LDraw Building Instruction Editor


vipsdisp can display huge (many, many GB) images quickly and without using much memory. 

As well as the usual PNG, JPG, TIF, PDF, SVG, WEBP, JP2K, JXL and GIF,
it supports many scientific and technical image formats, including SVS,
MRXS, OpenEXR, FITS, Matlab, NIfTI, Analyze, PFM, etc.

vipsdisp supports pixel types from 1 bit mono to 128-bit double precision
complex, you can convert image formats, and it has a range of useful
visualisation options and display modes.
    
    

vipsdisp

Kontrast is a color contrast checker and tells you if your color combinations are distinct enough to be readable and accessible.
    

Graphics & Photography