Tools
MGRS Converter
Convert MGRS to latitude/longitude and back on a live military grid map. Measure distance and bearing, and share any location by link.
mgrsconverter.com
IFR Climb Gradient Tracker
Watch an aircraft's real climb performance in feet per nautical mile from live ADS-B data, and check it against published ODP and SID gradients.
/ifr/
RCS Scanner
Draw a target's cross-section, sweep it with a phase-coherent ray-tracing engine, and read the radar signature off a dB polar plot. Preset planforms, guided lessons and stealth-shaping experiments.
CLOSED LOOP
A PID control academy in the browser. Eleven units of lessons, challenges and license exams drive fifteen live simulated plants, with Bode, Nyquist, root-locus and pole-zero analysis alongside.
/PID/
THE CONTROL ROOM
A reactor operator academy in the browser. A real physics simulator, 100+ lessons, famous-incident case studies and eight reactor designs, with an operator license to earn.
/Nuke/
The Tunnel
A wind tunnel learning simulator with real-time CFD in the browser, from your first smoke trail to hypersonic aerodynamics.
/Wind_Tunnel/
Dental Crop
Batch-crop dental patient photos in the browser. Shots auto-group into patient batches by time taken, and each patient's set goes out as a Gmail draft in one click.
/DentalCrop/
IIS Log Viewer
Free IIS log analyzer that runs entirely in your browser. Open W3C log files and get instant charts — traffic, visitors, bots, errors, response times, countries. Your logs never leave your machine.
/IIS_Log_Viewer/
Bathroom Code
Free bathroom finder: find the nearest public restroom, get the crowdsourced door code, and follow a compass pointer to the door. Add restrooms, share codes, and earn points.
/Bathroom/
Tesla Realtime Altimeter
A fullscreen realtime altimeter for the car. Live GPS altitude and DEM elevation on a scrubbable trail map, with smoothed grade readout in large type.
/Elevation/
Tesla Dead Reckoning
Dead-reckoned position from the car's heading and speed alone, drawn beside GPS ground truth on a live map with an error chart and heading/speed calibration.
/DeadReckoning/Games
3D Snake
Neon arcade snake in three dimensions. Play it flat, wrapped around the surface of a cube, or loose in a full 3D grid — with combos, power-ups and an online leaderboard.
/3dsnake/
Hexxagon
Clone, jump and conquer the hex board. Play a four-level AI, a friend on the same screen, or watch the engine fight itself — with a board editor and three themes.
/Hexxagon/
MOLESTORM
Arcade whack-a-mole with combos, fever mode and forty levels of unlocks — gold moles, bombs, thieves, power-ups and swappable themes. Endless, 60-second Blitz or no-fail Zen.
/Whack-A-Mole/
ANTS!
An ant invasion is overrunning the kitchen. Squash, spray and trap your way through the swarm, tunnel to tunnel, and take down the queen.
/ants/
SimpleCards
Free browser card games against AI opponents — Blackjack, Hearts, Spades, Rummy, Texas Hold'em and more. No sign-up, no download.
simplecards.net
The Mars Trail
A pixel-art Oregon Trail journey across the Martian frontier — manage supplies, survive the hazards, and make it to the next outpost.
/Mars_Trail/
Slide Puzzle
A sliding puzzle with a built-in tutor that shows every move and explains the method. 3×3 to 6×6 grids, daily challenge, ghost race, zen mode and a ring twist variant.
/Slide_Puzzle/