在线工具

Algebra Calculator shows you the step-by-step solutions! Solves algebra problems and walks you through them.

404PageFound - Nostalgic for old websites? 404PageFound showcases old websites that still exist. Dozens of Internet sites have not been updated for years and now serve a historical purpose.

Wiby is a search engine for older style pages, lightweight and based on a subject of interest. Building a web more reminiscent of the early internet.

Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages.

We aim to list only pointless and useless sites that don't have too many ads, are original, are useless, are not offensive and most of all make you smile - family friendly fun.

Looking for statistics on the fastest, tallest or longest roller coasters? Find it all and much more with the interactive Roller Coaster Database.

Everything had a first version: here you can find it!

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Dedicated to the world's mysteries such as ghosts and haunted places, UFOs, Bigfoot and Nessie, Crytozoology and many other mysteries.

WIKI HAS MOVED

A simulation of everything. (by Orteil)

Mathwords home page

Solve derivatives using this free online calculator. Step-by-step solution and graphs included!

Convert text to voice with this onlie text to speech software. It's easy and free. Write your message and download it as mp3 file.

Historical atlas of Europe. Maps of mountains, rivers, cities and countries of Europe and of the World. 2000 pictures of towns and landscapes. Antique digitized maps. Digital vector maps and georeferenced vector maps, educational softwares.

Google 提供的服務無須支付費用，可讓您即時翻譯英文和超過 100 種其他語言的文字、詞組和網頁。