The Client for Google Translate app has been working well for me lately by automagically translating highlighted text in various languages into English by clicking a pop-up icon. It works with Acrobat and Firefox, and has proven to be especially useful in translating plain text from Google Books. The translated text appears in a larger, scrollable pop-up box which can be saved to the clipboard. Freeware.

http://translateclient.com/

http://www.gnu.org/software/grep/>

But if you want an app that provides an easy-to-use GUI for building & saving sets of search-replace operations -- which you can then call from a command-line -- consider BK ReplaceEm.

This 32-bit Windows freeware application hasn't been supported or distributed by its developer Bill Klein (BK) for a number of years. But it was once considered among the very best search-n-replace apps (free or not). And I think it still deserves such consideration.

For a rather complicated example of the very sort which originally inspired BK to create his application, see: <http://www.ccp14.ac.uk/ccp14admin/bkreplacem/index.html

-skas (December 02, 2008, 07:58 AM)

BK ReplaceEM seems to have been republished by ecobyte software as Replace Text v2.2 (free).
http://www.ecobyte.com/replacetext/