Sites and apps similar to Trianglify include Quadro by Void Init. It's paid, but PatternGen is free. Other options are Image Pattern Designer and BGJolt. In total there are four Vector Graphic Apps like Trianglify for Mac and Windows.
SVG pattern generator based on the Quadtree algorithm. Create generative design in a few clicks: you don't need programming skills: with Quadro you can build a quadtree based pattern directly from the GUI.
United States
A procedural pattern generator for motion graphics. Design title compositions in Figma, generate animated patterns around them in the browser, export layered PNG sequences, and import them into Blender as emissive image-sequence planes.
Japan
Creating good looking background images can take a lot of work. Finding the right designer can be challenging. Using the free online tools may not live up to your standard. With BGJolt.com you can see exactly what you're going to get for free and it'll only take a moment.
