Learn the periodic table of elements
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Create, brainstorm, and organize your ideas on an infinite digital canvas.
Capture, organize, transform, and manage your clipboard history.
Generate and print specialty paper — graph, ruled, dot grid, music staff, etc.
Add sound effects to voices
Play crossword puzzles online
Geolocate by IP address
An analog-style chess time clock for timing players.
Extract above-the-fold CSS from any webpage
Create, customize, evaluate, and share professional rubrics.
Track blood pressure, medications, and lifestyle factors.
Create meta tags for your website
A free POS / Cash Register app
Business or pleasure; plan your perfect trip.
Verify your domain's email authentication records in one lookup.
Seawater, Salinity, pH, etc.
Solve cryptograms
Look-up DNS records online
Decode, inspect, verify, and generate JSON Web Tokens.
Learn American Sign Language
Easily erase the background from images
A new twist on the Minesweeper Game
Visually construct complex git commands.
Convert between HTML and Markdown
Get 4 checkers in a row to win
Track golden hour, blue hour, etc.
Create CSS patterns & effects
Add watermarks to your documents
An ancient Thai version of chess
Knock Knock! See who's there!