Tool websites

midi.city

Online MIDI synthesizer.

squoosh

Online image compression tool.

CyberChef

Tool to convert, analyze, and decrypt data. Great for quick data manipulation.

Regex101

Tool to test and debug regular expressions. Also has a quick reference and explanation.

Compiler Explorer

Tool to see how code is compiled. Supports many languages and compilers.

神奇海螺试验场

Funny and interesting web tools.

重編國語辭典修訂本

Online Chinese dictionary. Great for looking up Chinese words.

中文譯音轉換系統

Chinese phonetic conversion system. Great for converting Chinese words to phonetic symbols.

地圖數位典藏整合查詢系統

Historical map system. Although a lot of maps are behind login.

机械设计云平台

Chinese mechanical design online calculator.

Hi!Penpal!

Penpal site. Various language related tools.

ADS-B Exchange

ADS-B flight tracking site.

Kemono Friends Logo Generator

拼音转写

Convert Chinese Pinyin to International Phonetic Alphabet.

Visual6502

Visual Transistor-level Simulation of the MOS6502, ARM1, and Motorola6800.

BLAST

Online Basic Local Alignment Search Tool.

FotoForensics

Digital photo analysis tool.

UFO Test

Test monitor refresh rate and other display features.

Neutrino

AI Singing Voice Synthesis.

Vocal Remover

Remove vocals from music.

trace.moe

Anime scene search.

HYSPLIT

Hybrid Single Particle Lagrangian Integrated Trajectory Model. For tracking air movement.

ProTox

Predicting the toxicity of chemicals.

漢字古今中外讀音查詢

Chinese character phonetic search. Also as Android app.

Sinsy

Online singing voice synthesis.

IOBIO

Interactive online DNA sequence analysis.