Version history

6.0.2 · September 2026

A new program icon: two pages with the same highlighted phrase, linked, replacing the generic icon WCopyfind had used since it was first written.

Licensed under the GNU General Public License, version 3 or later (earlier versions: version 2 or later), with a link to the source code in the About box.

Three numbered steps: choose the documents, decide what counts as a match, compare. The window can be resized, and the lists grow to fill it.
Document lists show each document's name and folder, with counts, and are remembered between sessions.
Documents and whole folders (with subfolders) can be dropped onto either list, and shortcuts are followed.
Add Documents has a menu to add a folder, load and save lists, sort by name in natural order ("paper2" before "paper10"), move documents between lists, and clear lists.
Comparisons run in the background with a progress bar and a Stop button, and matching pairs appear as they're found. Results can be sorted by any column.
Less-used settings and the vocabulary tool moved to More Options. The report folder is created automatically.
Settings from WCopyfind 5 and earlier are carried over on first run.
A document that can't be read is skipped and listed, instead of stopping the whole comparison.

A report index that can be filtered by name and sorted by any column, with bars showing how much of each document matches.
One side-by-side page per pair, replacing three files per pair and the old HTML frames: highlighted passages in matching colors, click to jump to the twin, next and previous match, a matches-only view, dark mode, and clean printing.
Words skipped by the filters now appear in the reports instead of disappearing.
matches.txt keeps its format, now in UTF-8.

The first-run defaults for the report folder and language were cut to one character, so the first comparison on a new computer failed.
Settings and saved lists lost accented and non-English characters.
Loading a list cut the last character off its final line.
Report pages of documents with the same name in different folders overwrote each other.
The vocabulary tool froze the window and ignored the Basic Characters setting; it now writes UTF-8, most frequent words first.
Word .doc files now use Windows' own reader, as intended, for more accurate text.
Imperfect matches could absorb flaws only at the start of a phrase when one imperfection was allowed.

Updated to current Windows development tools (Visual Studio 2022+, C++20).
Fifteen bugs fixed, including memory and resource leaks, a PDF reading error, and dropped characters in .doc files.
Better reading of Word .doc files.
First version published on GitHub.

4.1.2–4.1.4 (June 2014), alongside the first release of the command-line Copyfind
4.1.1 (March 2012), the first with a 64-bit edition
4.1.0 (October 2011)
3.0–3.0.2 (June–August 2011)
2.7

Older versions can still be downloaded.