inspector text is an Add-In for Microsoft Excel that adds several extremely powerful, yet easy to use, search & replace worksheet formula functions:

-- Use several powerful wildcards and substitutions.
-- Search from left to right or from right to left.
-- Choose whether search is case sensitive or not.
-- Restrict search to text that appears before (or does not appear before) other text you specify.
-- Offset both the position and the length of the text found by any amount.
-- If replacing text, choose whether to replace only the first matching string found, or to replace all matching strings found.
-- If replacing text, rearrange text as desired, instead of (or in addition to) replacing it.
-- Return any of 22 kinds of information about the text found, such as position, position from right, text string found, count of all text strings found, array of all text strings found, etc. etc.
-- Choose a friendly, custom message to return if no match is found, instead of returning a standard error, if desired.

inspector text also adds worksheet formula functions that exclude undesired characters from text, and that retrieve desired characters from text, and that exclude non-numeric or retrieve numeric characters from text including negatives in parentheses and numbers in exponential notation.

inspector text adds a worksheet formula function that performs Regular Expressions search and replace.

inspector text also adds a worksheet formula function that evaluates concatenated formulas in which the operator is text (such as "1+2", where everything including the "+" is text).

inspector text adds another worksheet formula function that returns ordinal indicators for cardinal numbers (it returns "1st" for 1, "2nd" for 2, "3rd" for 3, etc.)

inspector text also provides online help from Excel's Herramientas menu, and utilizes Excel's Insert Function dialog to make using inspector text functions more convenient.