Page Replacement Simulator - Online FIFO, LRU, Optimal
Simulate memory page reference strings with FIFO, LRU, and Optimal algorithms. See page fault count. OS concept demo.
UD5 Toolkit
Ask any question & shake the ball for your fortune
Math.random() function to ensure each of the 20 answers has an equal chance of appearing. There is no AI, no fortune-telling, and no connection to actual future eventsājust pure, unbiased randomness. It's meant to be fun, not a substitute for real decision-making.Simulate memory page reference strings with FIFO, LRU, and Optimal algorithms. See page fault count. OS concept demo.
Get a random, mindābending shower thought. Amusing, existential, or just clever. Refresh for a new one.
Create a random, aspirational quarterly objective with unrealistic key results. For meeting icebreakers.
Enter any phrase and instantly see if it's a palindrome, ignoring spaces and punctuation. Fun for word nerds.
Generate a grand, aristocratic title like 'Duke of Waffleshire'. Perfect for silly fun or RPG characters. Local.
Keep track of a tennis match: points, games, sets, and deuce. Supports tiebreak. Great for friendly matches. Local.
Convert English sea yarns into pirate lingo. Arrrāmatey generator. Perfect for September 19th.
Select functional groups to see an approximate IR absorption spectrum. Learn spectroscopy visually. All local.
Simulate random mouse moves, clicks, or keystrokes to test idleātimeout logic. Stops when you move the mouse. Dev test.
Adjust ISO, aperture, and shutter speed sliders and see how it affects the exposure of a sample scene. Learn photography basics.
Apply a simple aging effect to a portrait: add wrinkles and grey hair. Just for laughs. Canvas manipulation.
Play the extended 5āgesture version against a CPU. Rules explained. Score tracking. A geek classic.
Select telescope and eyepiece parameters to see the field of view circle on a simulated night sky image.
Watch the planets orbit the Sun in a topādown 2D view. Adjust speed and zoom. Distances not realistic; beautiful model.
Peer into the virtual crystal ball to get a randomly generated, absurdly specific fortune. A fun start to your day.
Fold a virtual square paper step by step with crease lines and visual previews. Practice origami basics without wasting real paper. All canvasābased.
Press buttons to play famous meme sound effects (Bruh, Wow, Sad trombone). For fun and streaming. All sounds embedded.
Answer a series of deliberately confusing and trick questions. Lives system and funny wrong answers. Playful, no data stored.
Drag to see how a solar eclipse occurs. Visualize the moon's shadow. Educational and interactive.
Check if a word or phrase is a palindrome (reads same forward and backward). Live validation and fun facts.
Enter a URL and get a rough client-side performance simulation: request count, DOM size, and potential speed tips. No real Lighthouse.
Control a lunar module and try to land softly on the moon. Manage fuel and thrust. Classic arcade physics. Canvas.
Set a date in the far future or past and see a mock clock with impossible times. Purely for fun.
Turn your message into a scenic mountain emoji art panel. Choose different landscapes. Copy and paste anywhere.
Apply the famous alternating-case sarcasm style to your text. Perfect for comments and memes. One-click copy and paste.
Convert plain text into leet (1337) speak and decode it back. Great for gamer tags and online culture. Fun, free, and local.
Translate alphabetic text into corresponding emojis (A ā š °ļø etc.). A playful way to send messages. Purely frontend, no data collected.
Add top and bottom text to images and create classic memes. Upload your own image or use templates. Download your creation without watermarks. Purely client-side.
Flip a virtual coin to make a decision or settle a dispute. Realistic animation and fair random outcome. Simple, fast, and always available.
Simulate rolling dice for board games, RPGs, and decision making. Choose number of dice and faces. Fun, lightweight, and no download required.