Google's robust Diff Match and Patch algorithms to perform the operations required for synchronizing plain text.http://code.google.com/p/google-diff-match-patch/
* Compare two blocks of plain text and efficiently return a list of differences.
* Diff Demo
* Given a search string, find its best fuzzy match in a block of plain text. Weighted for both accuracy and location.
* Match Demo
* Apply a list of patches onto plain text. Use best-effort to apply patch even when the underlying text doesn't match.
* Patch Demo