What word processor or pop utility do you use for world currencies symbols?

Need a software commercial or freebie that can be used across flat form - while working in the website, typing a document - either in acrobat or simple word processor. Need something that can work also in browsers like Google, Yahoo and what have you.

Thanks you I will be searching for either in compiled keys combinations to produce these symbols of all kinds, including mathematical symbols, scientific or occult system.