Monster Manual
440 parametric fantasy monsters rendered as real 3D - dragons, undead, fiends, elementals, aberrations - a browsable bestiary poster.
Dioramas
Ten composed 3D scenes - village, city block, marketplace, dock, winter - each a parametric diorama.
Botanical Garden
480 parametric plants as 3D models - trees, crops, flowers and houseplants, all pure-C# renders.
Arcade Collections
Every version of every title we ever built - per-game pages gathering all 12 Tetrises, 12 Snakes and more, each with the playable C# cabinet embedded.
JS Arcade - every version
Eighty-three arcade classics on one canvas page - plus every historical build preserved and playable.
The Hundred
One hundred hand-authored brand pages - framework-free, zero dependency, each with its own scoped CSS and inline SVG.
KullGames Design System
The KullGames and KullOS design language - colour, type and geometry tokens, eight components, fifteen guideline cards, a twelve-page reference library and six UI kits.
razorc SSR
Thirty brand pages server-rendered by our own in-house razorc engine - Razor syntax compiled to HTML in about a millisecond.
Authenticator Setup
Provision your own 2FA - mint a TOTP secret, scan our own-generated QR into an authenticator app, live-verify.
FormulaViz
182 science and maths formulas rendered as animated GIFs, computed entirely in pure C#.
ImageTool
Click a pixel and a pure-C# magic wand selects the whole matching CIELAB colour region.
McAi
Ask a math, science, finance or text question in plain English and get an exact computed answer - no LLM.
OnlyCSharpShowcase App
A pre-rendered gallery of ten computed-graphics demos - terrain, star chart, Lorenz, path tracer.
VisionKit
Finds the straight lines and circles hidden in an image with classic Hough transforms.
Boids & Flocking
Steering behaviours in pure C# - heading-hued agents flock and skirt obstacles across a 90-frame loop.
Bridge Collapse
A truss solver in pure C# - members ramp green to red under load, then the deck sags into a hanging catenary.
Pure-C# Game Engine
A full CPU 3D engine in pure C# - ECS, physics and a software rasterizer - rendering a lit block-city with a 48-frame orbit.
Nav Mesh Pathfinding
A* over convex cells with funnel string-pulling - taut paths hugging inner corners through corridor, detour and maze.
Garden Farm Sim
A day-stepped farm simulation in pure C# - crops climb growth stages, soil water and pests play out, and the coin sparkline steps up over a season.
Minecraft Renders
The pure-C# Minecraft stack: Steve/Alex/Creeper skins, a day-cycle sky, a greedy-meshed voxel hill, and playable block-break audio.
Restaurant Sim
A restaurant service simulation in pure C# - tables fill to a dinner rush, the ticket queue deepens, and a real plate-safety scorer decides revenue.
Seed & Grow
A procedural-generation playground: L-systems, mazes, BSP dungeons, cave automata, Voronoi, space-colonization trees and wave-function collapse.
Turing Soup
Gray-Scott reaction-diffusion in pure C# - self-animating Turing patterns across five regimes.
Distance Field
A signed-distance-field raymarcher in pure C# - blended primitives, soft shadows and a 360-degree orbit.
Voxel Ridge
The 1992 Comanche voxel-terrain trick in pure C# - a seamless flyover over rolling hills and rocky peaks.
Cosmos Web
An interactive browser cosmos: fly the Sun out to nearby stars, the Milky Way, and cosmic expansion - 55,000 objects, constellations, an N-body sandbox.
Drop Atrium
SDF stained-glass physics: bodies dropped into an atrium with buoyancy, drag and Magnus lift.
Ray-Tracing Plates
Twenty-five plates from one ray tracer: each isolates one idea - a primitive, a light, a material, an optical law - and nothing is faked.
Fable Engine
A real-time 3D engine that draws every pixel on the CPU at 130fps: sun shadow-maps, a geometrically exact planar mirror, impulse physics and a Verlet rope.
Board Variations
A fleet of physics game-boards - billiards, brick-break, pinball, a molten foundry - each with real lights, ray-cast shadows and moving parts.
GFX Boards
A best-of board: PBR ray tracer, SPH water, Eulerian gas and N-body gravity, all CPU-rendered.
Lighting Reel
One ray-marcher, twelve lighting models: hard and soft shadows, inverse-square falloff, colored shadows, Fresnel, Beer-Lambert glass, ambient occlusion.
Scanline
Real-time software rasterization: triangles filled with a per-pixel z-buffer on the CPU at ~2,000 fps, four-camera halls past 300 fps, zero dependencies.
GFX Boards
A best-of board: PBR ray tracer, SPH water, Eulerian gas and N-body gravity, all CPU-rendered.
GPU Physics
Compute you can diff: real GPU hardware reached from pure C# - a Vulkan-compute Mandelbrot, an OpenGL cube - each cross-checked against the CPU renderer.
Grand Power Hall
Ray-traced industrial physics: water turns a wheel that drives a generator; a boiler powers a steam train.
Grand Power Rail Hall
Falling water to generator to boiler to steam motor to a train that launches itself - one SI-unit plant, ray-traced, with a no-free-energy ledger.
Grand Reliquary Cathedral
A CPU-raytraced stained-glass cathedral board - reflections, refraction and a hero walking all 64 tiles.
Image to 3D
Turn a flat photo into a spinning 3D model: magic-wand select, GrabCut cutout, Teddy inflate, turntable render, all pure C# on the BCL.
Material Sway
Every material sways differently: real cantilever-beam and coil-spring physics reading Young's modulus and yield from an engineering catalog - eight materials to destruction.
Minecraft World Render
A voxel-world renderer from scratch in pure C#: procedural terrain, ambient-occlusion block shading, a survival HUD - and it loads a real Anvil .mca world.
McAi Classics
Classical physics and chaos, path-traced in pure C#: the Lorenz attractor, a double pendulum, hanging cloth, fireworks, colored shadows, wave interference.
McAi Renders
A grab-bag of ray-traced experiments: a wireframe teapot under a gyroscope of coloured lights, a nebula star field, a Cornell box, walkable physics rooms.
McAi Physics
Nothing here is keyframed: nine sims where positions fall out of integrators - block collapse, a gravity slingshot, a pendulum wave, Diablo water and loot.
Model Render Lineage
One triangle became a whole rendering pipeline: a from-scratch software renderer over 10+ generations, wireframe to Cook-Torrance PBR to a turntable.
Mirror Labs
Five reflection techniques side by side - Hall-of-Mirrors, Whitted, planar, SSR and SDF.
Mirror Research
Eight ways to bounce a ray off a mirror: recursive tracing, planar render-to-texture, cubemap probes, screen-space reflection, curved and imperfect glass.
Mirror Labs
Five reflection techniques side by side - Hall-of-Mirrors, Whitted, planar, SSR and SDF.
Mirror Research
Eight ways to bounce a ray off a mirror: recursive tracing, planar render-to-texture, cubemap probes, screen-space reflection, curved and imperfect glass.
Peril Loops
Two ray-traced near-escape loops - outrun an avalanche, ride a Gerstner wave - on real physics.
Physics Odyssey
A physics museum you render, not fake: eight exhibits - Gerstner waves, combustion, SPH water, cloth, a gear train, a cyclotron - each a real solved kernel.
Physics Odyssey
A physics museum you render, not fake: eight exhibits - Gerstner waves, combustion, SPH water, cloth, a gear train, a cyclotron - each a real solved kernel.
Reality Cinematic
One physics-and-thermal solve per frame, ray-traced through six cameras and five false-color vision modes: thermal, velocity, night-vis, stealth.
Reality Fire
A fire that obeys the ideal gas law: an Eulerian field ignites a fuel bed, lofts a Beer-Lambert smoke plume, then water quenches the core.
Reality Fluids
A pond you can drop a rock into: wood floats, steel sinks, splashes drive a damped 2D wave equation, four rendered views of one solver step.
Reality Footprints
Four loads cross sand and snow; each rut is real Bekker pressure-sinkage, not a painted decal - the trail is the record the ground keeps.
Reality Materials
Six cubes fall together (Galileo) while density, mass and metallic-vs-dielectric light response are resolved live from CRC and ASM catalogs.
Reality Optics
A recursive ray tracer: every mirror reflection, glass refraction and coloured shadow really traced, beauty and per-pixel proof side by side.
Reality Sim
One from-scratch ray tracer and SI-unit physics engine: recursive mirrors, a door modelled as joints, phase-change stations, full energy chains.
Impossible Figures
A renderer that draws figures which cannot exist: Penrose stairs and triangle are real 3D meshes valid from one camera - rotate and the illusion pulls apart.
Solar System
A solar system drawn in plain C#: eight planets from real ephemeris, one Sun point-light, PBR-shaded, against a real star catalog, HDR-tonemapped.
SpellViz
Every spell, simulated: not sprites but Stable-Fluids combustion, wave equations and ballistic bolts solved in pure C#, plus downloadable glTF models.
Terminal Graphics
A shaded Utah teapot, a red border and a fisheye magnifier - real terminal graphics, drawn with 24-bit ANSI half-blocks.
Vignettes
Nine small CPU-rendered physics scenes: avalanche, wave surfer, glass furnace, iron foundry, wax candle, hot-ice, and a cathedral board.
Weather Climate Ocean
The weather falls out of the sunlight: tilt to insolation to ocean-lag to pressure to wind to rain, one causal chain solved in pure C#, at six scales.
Art Studio
A creative suite - paint, audio tracker, MIDI studio, 3D modeler and video, all in one C# app.
Cinder
A web browser written in C# - HTML parse, layout and paint, all from the base class library.
KullOS 4.0 Desktop
The full KullOS 4.0 desktop - 160 pure-C# apps rendered to self-contained pages: calculator, periodic table, spreadsheet, piano, terminal, garden sim and more.
KullOS Desktop
The desktop shell for the whole pure-C# app suite - click a tile to open any app below, each a real render, not a mockup.
Quarry
A SQLite database browser - open a real .sqlite file and walk its tables and B-tree pages.
Warren
A file manager over a real ext2 disk image - directories, inodes and blocks, read in C#.
DataSymphony
Data you can hear: three movements sonify real PD/CC0 catalogs (nuclear tests, the Space Race, earthquakes) into music + a spectrum visualizer, pure-C# offline codecs.
Menagerie
The 1.9 animation menagerie: 540 clips of rigged, spring-hung, material-aware creatures and parts.
Pathfinder World-Disk
A clean-room pure-C# Pathfinder SRD engine: 623 spells, 346 monsters, 429 items, 175 feats, 11 classes - searchable, with a 4-layout view switcher.
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Arch Multi Player Example Client
Arch Multi Player Example Client - a archived html/js fleet app.
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Ocean Depth Zones
Epipelagic->Hadal: depth, light, life, as a CSS depth column. .razor v3.0 static.
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Onlycsharpsoftwarecenter (v3.0 static)
semver resolve + topo-sort install plan — .razor SSR static (3.0).
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Botanical Atlas (3.0 SSR)
17 garden-bed sections, ~400 species rows pulled live from the Biology.Botany catalogs - wildflowers to cycads to carnivorous plants.
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Livestock Breed Catalog (3.0 SSR)
The first local-model-authored OnlyCSharp 3.0 ocRazor SSR app - 8 species tables (46 breeds) rendered from the real OnlyCSharp.Data BreedCatalog through OcAppHost.
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Solar System Bodies
Sun, planets, dwarfs & major moons: mass, radius, orbit — Data/3.0 SolarSystemBodies.
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Periodic Table
All 118 elements: Z, symbol, mass, group, block, category, physical props — Data/3.0 PeriodicTable.
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Writing Systems
11 ancient scripts: family, region, invention date, decipherment. Data/3.0 Epigraphy.
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Farm Equipment Catalog (Data 3.0)
24 farm handling/production equipment items (F01-F24) with mass, cost, skill level and target species - OnlyCSharp.Data AnimalScience.Equipment, local-LLM-drafted showcase.
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Livestock Feedstuffs Catalog (Data 3.0)
20 feedstuffs with metabolizable energy, TDN, crude protein, NDF on dry-matter basis - OnlyCSharp.Data AnimalScience.Nutrition (USDA ARS / NRC sourced).
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Veterinary Pharmacology Catalog (Data 3.0)
Veterinary drug dosing/withdrawal reference rows from OnlyCSharp.Data Veterinary.Pharmacology - local-LLM-drafted showcase.
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Liveauthenticator (v3.0 static)
liveauthenticator — .razor server-side-rendered static HTML (3.0).
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Onlycsharpcalendar (v3.0 static)
onlycsharpcalendar — .razor server-side-rendered static HTML (3.0).
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Onlycsharp Chemistry (v3.0 static)
onlycsharpchemistry — server-side-rendered static HTML (3.0, no runtime).
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Onlycsharpdatabasebrowser (v3.0 static)
onlycsharpdatabasebrowser — .razor server-side-rendered static HTML (3.0).
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Onlycsharpdiagram (v3.0 static)
onlycsharpdiagram — .razor server-side-rendered static HTML (3.0).
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Onlycsharp Electronics (v3.0 static)
onlycsharpelectronics — server-side-rendered static HTML (3.0, no runtime).
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