Limnu

Limnu is an incredibly specific, highly specialized platform that completely rejected the complex "Corporate Project Management" features of Miro and Mural. Limnu was explicitly engineered to perfectly simulate one singular experience: "The absolute, physical feeling of drawing on a real, physical dry-erase whiteboard with a plastic marker." Its signature feature is the "Flawless Ink Engine." Most digital whiteboards try to make drawings look like perfect computer vector graphics. Limnu uses highly complex mathematical rendering to make the digital ink look exactly like a real dry-erase marker. The ink physically blends, it has realistic opacity, and it renders at a terrifyingly fast 60 frames-per-second, making it the absolute favorite tool for hardcore visual artists and math professors. Because it targets pure speed, its "No-Friction Onboarding" is legendary. A math tutor doesn't want to make their student create an account, verify their email, and learn a complex UI. In Limnu, the tutor clicks "Create," sends a simple URL to the student, and the student is instantly in the board, drawing complex calculus equations in exactly 3 seconds with zero barriers to entry.