fish-zero
Open the URL and start. No install, no sign-up, and your data never leaves your machine.
Tools on this site
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Markdown Editor
Open a folder, hit
Ctrl+S, and the file on disk is updated. Dual preview, three themes, trilingual UI. -
Stock Calculator
For the Taiwan market: next-session limit prices, how many limit-ups to a target, and averaging down. Everything is snapped to the exchange tick size, so the numbers are prices you can actually order at.
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Raffle Wheel
For office parties and events. Set up your prizes and seats in advance, then press one button to draw the next winner. Weighting, one prize per person, bulk import, full-screen projection.
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Media Viewer
Pick a folder and browse every photo and video in it: WebP, animated GIF, MP4 and more, with format filters, filename search, sorting by name/date/size, and arrow-key navigation.
Every tool is one self-contained HTML file: no backend, no account, nothing left behind when you close the tab. Copy one to a USB stick and it still works offline.
Games
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Track the Ball
“Track the Ball”: remember the one yellow ball, watch it blend in and start moving, then keep your eyes on it and tap where it ended up. Balls and speed ramp up every level.
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Number Grid
The 3x3 grid shows 9 unique numbers (starting single-digit, expanding up to 0–99 as you advance) — tap them smallest-to-largest or largest-to-smallest as instructed (mouse or numeric keypad). The time limit shrinks every level.
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Pet Pool
A billiards practice table: 9-ball, 8-ball, and 14.1 straight pool, playable against the computer (easy/hard). Drag to aim, pick your power on the gauge, and add spin (follow/draw/side english). No online matchmaking yet.
Same deal as the tools: no backend, no account — your progress is only ever saved in your own browser.