libRocket vs VTK

libRocket

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

GUI

Source Code

librocket.com

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VTK

Mirror of Visualization Toolkit repository (by Kitware)

Image processing

Source Code

gitlab.kitware.com

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libRocket		VTK
	Project
3	Mentions	5
1,109	Stars	2,495
0.0%	Growth	1.5%
0.0	Activity	10.0
about 3 years ago	Latest Commit	6 days ago
C++	Language	C++
-	License	GNU General Public License v3.0 or later

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.

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.

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

What are some alternatives?

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

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

OpenCV - Open Source Computer Vision Library

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

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.

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

SVG++ - C++ SVG library

CEGUI

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

QCustomPlot

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

MyGUI - Fast, flexible and simple GUI.

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