The best way is certainly just to write without errors at all: imagine that you are only going to make an error but you slap your hand with the other and go on writing correct code. From this we conclude that it's cheapest and easiest to eliminate an error while writing the code. BugFix: Fix an issue where the folder column is not updated for child items after renaming a directory in the folder compare window.The earlier the developer finds an error in application code, the cheaper it is to fix it.BugFix: Elapsed time was no longer displayed in the status bar after folder comparison.BugFix: Fix renaming process in folder compare window.BugFix: Fix an issue where paths with different case are not displayed correctly in the folder column of the folder compare window when comparing three directories.BugFix: replace text using regular expressions behaves incorrectly if multiple matches on the same line (#1387, PR #1388).BugFix: 'Match case' in Search always enabled (#1380).BugFix: 'Replace All' doesn't work when Replace in 'Selection' and the new string contains the old string.Allow renaming of untitled pages (#1395).Online manual and installed HTML Help manual.Rudimentary Visual SourceSafe and Rational ClearCase integration.Shell Integration (supports 64-bit Windows versions).Regular Expression based file filters in directory compare allow excluding and including items.Highlights differences inside lines in file compare.Location pane shows map of files compared.Difference pane shows current difference in two vertical panes.Handles DOS, UNIX and MAC text file formats.Flexible editor with syntax highlighting, line numbers and word-wrap.Visual differencing and merging of text files.

It is highly useful for determing what has changed between project versions, and then merging changes between versions. WinMerge is an Open Source visual text file differencing and merging tool for Win32 platforms.

Winmerge review