KRuler is an on-screen ruler for measuring pixels. Position the 0 at your starting point and measure the precise pixel distance between the starting point and your cursor.

KRuler

Flexible, user expandable 2D animation software for Linux and Windows.

enve

Wings 3D is an advanced subdivision modeler that is both powerful and easy to use. Wings has a simple interface. Right-click menus give you easy access to common commands. These menus are context sensitive, so depending on your selection, a different menu pops up.Wings has a many standard mesh modeling and selection tools such as Move, Scale, Rotate, Extrude, Bevel, Bridge, Cut, and Weld. Wings also features advance modelling tools such as: Sweep, Plane Cut, Circularise, Intersect, Bend, Shear, and Inset, Magnets and Magnet Masking, Virtual Mirror for symmetrical modeling, Tweak and Sculpt, Edge Loop and Edge Ring selection and navigation tools and Smooth Preview.

Wings 3D

Ristretto is an image viewer for the Xfce desktop environment.The Ristretto Image Viewer is an application that can be used to view and scroll through images, run a slideshow of images, open images with other applications like an image-editor or configure an image as the desktop wallpaper.

Ristretto

Drawpile is a drawing program that lets you share a canvas with other users in real time.You can share your drawing board with the built-in server or connect to a dedicated server.

Drawpile

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

Pixelitor is an advanced image editor with support for layers, layer masks, text layers, multiple undo, blending modes, cropping, Gaussian blurring, unsharp masking, histograms, etc. It has more than 110 image filters and color adjustments, some of which are unique to Pixelitor. Some of the gradients are unique to Pixelator.

Pixelitor

A practical tool to foresee the result of calculus exercises.Compute derivativesCompute integralsPlot the original expression and result within a given rangeIf you are interested, open an issue in github to update a translation or make a pull request. All available translations:EnglishPortugueseItalianSpanish (outdated)Slovakian (outdated)

Calculus

InVesalius generates 3D medical imaging reconstructions based on a sequence of 2D DICOM files acquired with CT or MRI equipments. InVesalius is internationalized (currently available in English, Portuguese, French, Spanish, Turkish, Italian, Czech, Japanese, Catalan, Korean, Romanian and German) and provides several tools:DICOM support including: (a) ACR-NEMA version 1 and 2; (b) DICOM version 3.0 (including various encodings of JPEG -lossless and lossy-, RLE)Image manipulation features (zoom, pan, rotation, brightness/contrast, etc)Segmentation based on 2D slicesPre-defined threshold ranges according to tissue of interestSegmentation based on watershedRegion growing segmentationEdition tools (similar to Paint Brush) based on 2D slicesSemi-automatic segmentation based on Watershed3D surface creation3D surface connectivity tools3D surface exportation (including: binary STL, OBJ, VRML, Inventor)High-quality volume rendering projectionPre-defined volume rendering presetsVolume rendering crop planePicture exportation (including: BMP, TIFF, JPG, PostScript, POV-Ray)Minimum, Maximum or Mean Intensity Projection, Maximum Intensity Difference Accumulation and Contour based visualizations

InVesalius

3D medical imaging reconstruction software

Seamly2D is pattern design software to create reusable, scalable, sharable custom-fit patterns using bespoke tailoring, haute couture, and historical pattern drafting techniques. Seamly2D saves time and improves fit by creating patterns that are reusable parametric CAD engineering documents.Unlike other pattern design software, Seamly2D allows designers to have complete control of the patternmaking process. Each reusable, scalable pattern can read multi-size tables for boutique sizing, and read individual measurement files for custom-fit.Seamly2D is open source software released under the GPLv3+ license. Seamly2D is available for Windows, MacOS, and Linux. Learn more about Seamly2D by joining our active, friendly community at https://forum.seamly.net

Seamly2D

Manga reader for local files.Supports zip, rar, tar, 7z, cbz, cbr, cbt, cb7 files and also folders.Images are displayed in a vertical list and their size can be configured (fit width and/or height, user defined max width, original size).Can set up multiple manga folders whose contents will be displayed in a tree view, from where they can be opened.Can bookmark mangas.Configurable keyboard shortcuts.

Manga Reader

HotShots is an application for capturing screens and saving them in a variety of image formats as well as adding annotations and graphical data (arrows, lines, texts, ...)

HotShots

Powerful and simple to use screenshot software

jdAnimatedImageEditor is a simple Program that lets you create and edit animated Images. It supports GIF and APNG. Import and export of Videos is also supported.

jdAnimatedImageEditor

A simple program for creating animated Images

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

Create 3D images with a phone or camera. Take two photos of a subject and the software will create a 3D image from them. Vertical and  rotational alignment of the left and right images is essential for a convincing 3D effect, but difficult to achieve with an ordinary camera. This software corrects it. 3D image formats that can be created are anaglyph (red/cyan), side-by-side and crossover. Several photos can be processed at once and the resulting images reviewed.

Popout3D

Creates 3D images from photographs taken with an ordinary camera.

Material Maker is a tool that can be used to create textures procedurally and paint 3D models.

Material Maker

Procedural texture generation and mesh painting tool

Dust3D is a brand new 3D modeling software. It helps you create a 3D watertight base model in seconds. Use it to speed up your character modeling in game making, 3D printing, and so on.

Dust3D

ScanTailor is an interactive post-processing tool for scanned pages. It performs operations such as:page splitting,deskewing,adding/removing borders,selecting content... 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.The ScanTailor version that merges the features of the "ScanTailor Featured" and "ScanTailor Enhanced" versions, brings new ones and fixes.

ScanTailor Advanced

Interactive post-processing tool for scanned pages

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

Make out icons, glyphs, or anything you can create with lines in this grid of dotsSelect whetether to draw with lines or curves.Quit anytime with the shortcut Ctrl + QUndo with the shortcut Ctrl + ZChange line thickness by +5 or -5 with the respective shortcuts Ctrl + X and Ctrl + Shift + X

Dot Matrix

The creativity playground of lines and curves

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

Inochi2D is a framework for realtime 2D puppet animation which can be used for VTubing, game development and digital animation.Inochi Creator is a tool that lets you create and edit Inochi2D puppets.

Inochi Creator

Tool to create and edit Inochi2D puppets.

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.The documentation is in the github wiki.

vimix

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

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.

BeeRef lets you quickly arrange your reference images and view them while you create. Its minimal interface is designed not to get in the way of your creative process. Drag 'n drop functionality does not currently work from all sources in the Flatpak release.

BeeRef

Fontmatrix is a font management application for Linux, macOS, and Windows.It helps keeping your font collection in order, allowing you to enable and disable availability of fonts and font families in your system. This is typically in demand by designers who tend to have huge collections of typefaces.

Fontmatrix

Ipe is a drawing editor for creating figures in PDF format. It supports making small figures for inclusion into LaTeX-documents as well as making multi-page PDF presentations.

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

KPhotoAlbum is an application for tagging and managing a photo collection and making it searchable.

Graphics & Photography