So many minor annoyances with other translators, but this one is just perfect.

Excellent. Fast, immediate.

the best translate, immediate

Make like TransOver for Chrome. Do the translation WITHOUT HIGHLIGHTING

perfect

Кроме того, что не работает на addons.mozilla.org и некоторых других сайтах (скорей всего это проблема гугл переводчика), больше особых претензий нет.
Может переводить выделенный текст, всю страницу и так, как мне нужно. Есть все необходимые настройки.

Need one more feature: input language.

Auto detection doesn't always work well, especially when translating a small passage of text. Japanese is often recognized as Chinese, and you'd never know it, because it display say what language the selected text is detected as. Similarly, Dutch could be detected as German, Spanish as Portuguese, etc.

Input language should perhaps be a priority list of languages you most likely want to translate, and have the translation engine prefer those over whatever is autodetected, if possible.

That's excellent

Good

Very good - simple and fast! Maybe missing option "translate by key"

Bence şuanda en iyisi bu. Çok teşekkür ederim.
Best. Thank you...

Simple, intuitive, quickly accessible and easy way to translate while reading a webpage.

it's great

As described, Simple to use, simple everything

رائع

"Simple Translate" is its name and that's right, it is simple, fast, accurate and very easy to use. I am pleased of using it everyday.

Keep the good work!

Very good minimalistic and open-source alternative to S3.