This page can be useful:
It groups different translating systems.

I am not sure about translating whole paragraphs, but for single words, Linguee and Wordreference are great.
I think Wordreference bangs should be extended to all available combinations (with language code associations of 4 letters).
Linguee should be added too, as it is very useful for translations in context.

I guess the ideal would be a crowd-sourced database that can learn from user requests and feedback?
posted by [UserVoice chtfn] • 5 years and 3 months ago Link