Poriangle vs OG Paper

There's a technique called Delaunay triangulation used in computational geometry. While it has plenty of practical applications, let's skip the technical stuff—filling shapes with triangles just looks cool. Poriangle is a shape editor that lets you draw any shape and fill it with Delaunay-style triangles. Draw, experiment, and have fun creating your own designs.

OG Paper is an endless canvas: sketch, write, paste and arrange anything, then zoom in forever. There is no edge and no bottom: draw a city, zoom into a window, and write a note inside it a trillion times smaller. Everything stays sharp at any depth. DRAW YOUR WAY • A brush with pressure, dashes and opacity, or a full brush engine: pencil, charcoal, watercolor, airbrush, ink, neon and more, with every setting behind them • Highlighter, eraser, bucket fill, textures and stamps • Shapes with hand-drawn or clean outlines, and a pen for smooth curves • Text in bundled fonts or your own, with letter spacing, line height and words that follow any curve • Pictures and PDFs to write on, cropped in place, with brightness, contrast, saturation and background removal DESIGN • Layers you can hide, lock, reorder, fade, blend (multiply, screen and more) and clip to the layer below • Linear and radial gradients, saved swatches • Combine shapes: union, subtract, intersect, exclude • Group things, align and spread them out, snap to what's around, type exact sizes and positions, show rulers • Frames for pages and artboards, and components whose copies update with the original DIAGRAMS Turn on diagram mode and lines and arrows stay joined to what they connect. Place flowchart, electrical and mechanical symbols with pins: wires stay on their pins as you move and turn them. PORTALS Draw a window that shows another part of your canvas, live. Zoom into it and you go through it. Put a portal at the end of a street that shows the street itself and the zoom never ends. KEEP YOUR TOOLS AT HAND Save tools with their exact settings in toolbars and an inventory, give each toolbar a press-and-hold tool, and switch toolbars in a tap. Resize the whole interface, hide what you don't need, or go dark. FIND YOUR WAY Search every word on the canvas, save views and fly back to them across any zoom depth, and scrub the timeline to watch your canvas being drawn. YOURS, AND PRIVATE Your canvases are files on your device in an open, documented format. No account, no ads, no tracking: OG Paper collects no data. DRAW TOGETHER, WHEN YOU WANT Share a canvas live with end-to-end encryption, host it yourself, sync through a folder, or merge copies later. Offline work joins in when you reconnect. FREE AND OPEN SOURCE OG Paper is free and open source (MPL-2.0), and runs on Mac, iPhone, iPad, Windows, Linux, Android and the web.