VTK vs libRocket

VTK

Mirror of Visualization Toolkit repository (by Kitware)

Image processing

Source Code

gitlab.kitware.com

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libRocket

libRocket - The HTML/CSS User Interface library (by libRocket)

GUI

Source Code

librocket.com

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VTK		libRocket
	Project
5	Mentions	3
2,495	Stars	1,109
2.8%	Growth	1.3%
10.0	Activity	0.0
5 days ago	Latest Commit	about 3 years ago
C++	Language	C++
GNU General Public License v3.0 or later	License	-

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

VTK

Posts with mentions or reviews of VTK. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-05.

[Discussion] What are some old C++ open source projects you wish were still active?
10 projects | /r/cpp | 5 Apr 2022

You are referring to the Visualization Toolkit right? Looking at that it appears to be actively maintained stilled I think. https://github.com/Kitware/VTK
best c++ libraries for building a business software without paying licenses or show source code
1 project | /r/cpp_questions | 5 Feb 2022
Getting 3D to work with GTK
1 project | /r/GTK | 14 Dec 2021

While this example is outdated: https://github.com/Kitware/VTK/blob/master/Wrapping/Python/vtkmodules/gtk/GtkGLExtVTKRenderWindow.py
VTK: Open-source software for image processing, 3D graphics and visualization
1 project | /r/CKsTechNews | 4 Mar 2021

1 project | news.ycombinator.com | 4 Mar 2021

libRocket

Posts with mentions or reviews of libRocket. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-08.

GUI for software, not games, but lighter than Qt ?
19 projects | /r/cpp | 8 Apr 2022

it's a fork of https://github.com/libRocket/libRocket which was started a long time ago.
[Discussion] What are some old C++ open source projects you wish were still active?
10 projects | /r/cpp | 5 Apr 2022
Best engine/tools to make games that are purely UI?
4 projects | /r/gamedev | 16 Sep 2021

I've found libRocket to be a great UI library paired with SDL2 and OpenGL. It allows you to use a subset of html and css to design your UI, while handing rendering off to the renderer of your choice. This gives you the flexibility to add advanced visual effects during the rendering step.

What are some alternatives?

When comparing VTK and libRocket you can also consider the following projects:

OpenCV - Open Source Computer Vision Library

sciter - Sciter: the Embeddable HTML/CSS/JS engine for modern UI development

ITK - Insight Toolkit (ITK) -- Official Repository. ITK builds on a proven, spatially-oriented architecture for processing, segmentation, and registration of scientific images in two, three, or more dimensions.

RmlUi - RmlUi - The HTML/CSS User Interface library evolved

SVG++ - C++ SVG library

imgui - Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

OpenMVG (open Multiple View Geometry) - open Multiple View Geometry library. Basis for 3D computer vision and Structure from Motion.

CEGUI

Video++ - Video++, a C++14 high performance video and image processing library.

QCustomPlot

tesseract-ocr - Tesseract Open Source OCR Engine (main repository)

MyGUI - Fast, flexible and simple GUI.