Productivity

Add options and randomly spin to pick a winner — great for quick decisions.

Randomly pick one or more names from a list, with exclusion and history tracking.

Count down to a target date/time or a set duration, with quick-add time buttons.

Track daily habits with a weekly grid, streak counts, and local browser storage.

A precise stopwatch with lap tracking, fastest/slowest lap highlighting.

Find overlapping working hours across teammates in different timezones.

Calculate monthly loan payments, total interest, and a full amortization schedule for any fixed-rate loan.

Calculate tip amount and split a bill evenly between any number of people, with common tip percentage presets.

Build a simple, printable invoice with company/client details, line items, and automatic subtotal/tax/total calculations.

Read any text aloud using your browser's built-in speech synthesis engine — no server, no API key, no usage limits.

Roll one or more dice of any common type (d4-d100) or a custom side count, using cryptographically strong randomness, with a running roll history and total.

Build a single-elimination tournament bracket from a list of entrant names, with automatic byes assigned to top seeds when the entrant count isn't a power of two.

Randomly assign gift-giving pairs for a group, guaranteeing nobody draws their own name, with optional exclusion pairs for couples or family members.

Split a list of names into a chosen number of randomly shuffled, evenly-sized teams — great for sports, classroom groups, or team-building activities.

Prioritize tasks using the classic Urgent/Important 2x2 matrix — sort items into Do First, Schedule, Delegate, and Delete quadrants, saved locally in your browser.

Watch the current time displayed as a live Binary-Coded Decimal (BCD) clock, with each digit of hours, minutes, and seconds shown as a column of binary dots.

A simple To Do / In Progress / Done task board saved in your browser, using dropdown-based column moves instead of drag-and-drop.

Set an alarm for a specific time of day and get an audible chime plus a browser notification when it rings, right from your browser tab.

Flip one or more virtual coins using cryptographically strong randomness, with a running heads/tails tally and streak-friendly multi-coin flips.

Ask a yes/no question and shake the classic Magic 8-Ball for one of its 20 traditional randomized answers — affirmative, non-committal, or negative.

Test your typing speed (words per minute) and accuracy against a randomized short passage, timed live as you type.

Test your visual reaction time — click as soon as the box turns green, with live tracking of your last, best, and average reaction time across attempts.

Enter two names for a fun, purely-for-entertainment compatibility percentage — a deterministic hash, not a real prediction.

Play tic-tac-toe against a computer opponent that plays perfectly using the minimax algorithm — the best you can achieve is a draw.

Classic word-guessing game — guess letters to reveal a hidden word before running out of attempts, playable entirely with mouse or keyboard.

Play Connect Four against a minimax-powered computer opponent with alpha-beta pruning — drop discs, connect four in a row, and try to outsmart the AI.

Classic card-matching memory game — flip two cards at a time to find all 8 matching pairs in as few moves as possible.

Play the classic naval strategy game against the computer — place your 5 ships on a 10×10 grid, then take turns firing until one fleet is sunk.

Play the classic Minesweeper puzzle game — reveal cells, avoid the 10 hidden mines, and use number clues to flag them all on a 9×9 grid.

Play checkers against the computer — jump diagonally to capture pieces, reach the far row to become a king, and try to capture the entire enemy army.

Create your own custom flashcard deck with front/back text, then study by flipping, shuffling, and navigating through your cards.

Play Reversi (Othello) against the computer — sandwich opponent discs between your own to flip them, and win by controlling the most discs when the board fills.