Search GitHub for "HMI graphics library." The open-source SCADA community is prolific.
Once a paid product, Litmus released a substantial portion of their industrial icon set to the public to drive adoption of their edge platform. free hmi graphics library
If you use CODESYS or any IEC 61131-3 based IDE, their store offers "Freeware" visualization packs. These are not SVGs but native runtime objects. Search GitHub for "HMI graphics library
| Criterion | Weight | Description | |-----------|--------|-------------| | License compatibility | High | Allows commercial use? Requires attribution? Copyleft (GPL) risk? | | Quality & scalability | High | Vector (SVG) vs raster; resolution independence; anti-aliasing | | Platform compatibility | Medium | Works with common HMI runtimes (C++, Python, C#, Web) | | Customizability | Medium | Source SVG/PSD files available; styling via CSS/QSS/XML | | Documentation & examples | Low | Clear API, demo projects | | Maintenance & community | Low | Recent commits, active forum, issue tracking | Free means available under licenses such as MIT,
An HMI graphics library typically provides:
Free means available under licenses such as MIT, GPL (with care), Apache 2.0, Creative Commons (CC BY), or free tiers of commercial libraries.
These libraries provide complete graphical environments. They are ideal if you are building an interface from the ground up and need buttons, sliders, and window management systems.