NPM Package Name Generator - Online Unique Name Checker
Generate creative, available npm package names and check if a name is already taken on the registry. Quick and fun for developers.
UD5 Toolkit
Online Family Feud Style • Fastest Finger Wins
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touchstart events for minimal latency.
Generate creative, available npm package names and check if a name is already taken on the registry. Quick and fun for developers.
Connect to an SSE endpoint and display events in real time. Inspect event types and data. Handy for frontend devs.
Create a friendly CONTRIBUTING.md file for your repository by filling in a few sections. Encourage contributions. Static template.
Generate pure audio tones of specific frequencies (Hz). Adjust waveform type (sine, square, sawtooth). Ideal for audio testing and science experiments.
Convert between decimal degrees, degrees-minutes-seconds (DMS), radians, and grads. High-precision for surveying and navigation. Local tool.
Generate short, URL‑safe, unique string IDs with customizable alphabet and length. Smaller than UUID. Local only.
Convert between units of absorbed dose and equivalent dose (Gray, Rad, Rem, Sievert). Educational and reference. Local calculation.
Enter the correct answer and accept player entries. Highlights correct ones. Simple scorekeeper for home trivia.
Answer 5 silly questions and get a fruit personality result with a description. Harmless fun, local only.
Randomly show a Q-code and select correct meaning. Learn while having fun. For your license exam.
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
Randomly given base form, type past simple and past participle. Score tracking.
See a clip of a famous artwork and choose the correct title. Art history fun. Local images.
Shows a random historical event that occurred on today's date. Fun daily knowledge snippet.
See a cropped or simplified brand logo and guess the company. Hints available, score track. Local fun, no copyright infringement.
A country border shape appears, guess the nation. Multiple choice. Score tracking. Learn geography visually. Local SVG shapes.
Guess the movie title from a sequence of emojis. Hundreds of puzzles, score tracking. Pure frontend fun.
Identify dog breeds from silhouettes or partial images. Score tracking. Fun for all ages. Local only, no images uploaded.
Click to see a random cat fact with a cute drawn illustration (or placeholder). Lightweight entertainment for cat lovers. Local static data.
Interactive quiz to learn all 50 US state capitals. Choose mode: capital to state or state to capital. Map highlight available. Works offline.
Practice calculating network ID, broadcast address, and usable IPs from a random IP/CIDR combination. Instant feedback and score tracking. Perfect for CCNA prep.
Test how fast you can convert between binary and decimal. Timed drills with increasing difficulty. Learn base‑2 fluency.
Randomly generated subnetting questions. Calculate network address, broadcast, and usable range. For CCNA prep.
Click to see a random, verified fun fact from science, history, and nature. Perfect for icebreakers. Static data.
See a flag and pick the country among four choices. Timed rounds with score. Perfect for geography buffs. Local data.
Test your knowledge of American Sign Language letters. See a sign and type the letter. Improve receptive skills. Local.
Click for a fascinating, verified science fact. From biology to physics. Expand your knowledge. Lightweight and static.
Test your knowledge: given a state name, pick its capital. Timed, with scoreboard. Learn all 50. No login.
Click for a random general knowledge question, then reveal the answer. Covers science, history, pop culture.
A silhouette of a country appears; type the name. Timed guesses. Great for geography buffs.