Apart from the fact that WTides looks like a Windows program, rather than a Unix program, the only other significant differences between WTide 2.1.4 and XTide 2.4 are:

• Wtides creates an index on the harmonics and offset files to speed startup
• WTides uses the Windows scroll bars for time navigation
• WTides can display an icon depicting the phase of the moon
• WTides can show in a status bar the x and y graph values corresponding to the mouse position.
• The status bar and a line showing the current time are updated as time passes.

David Flater (http://www.flaterco.com) has released XTide 2.5.  The main change from 2.4 to 2.5 is the addition of routines provided by Jan C Depner (Jan is a musician too) to display shoreline data on a world map.  I have incorporated these routines into WTides 2.1.  In addition I have:

• Modified the graph window so that the graph bitmap and a plain text display share the window
• Added an extra calendar style, separating astronomical events from tideonomical events.
• Improved the mechanism that searches for missing harmonics files
• Modified Dstr.getline() to cope with crlf - enables crlf pair in offsets and harmonics, thus allowing the Windows notepad to be used for editing offsets
• Modified coastline code to allow coastline image to show on either globe or map at user choice
• Modified coastline display to use a bitmap for the initial display, to speed execution
• Added the facility for all text displayed by the program to be translated and distributed as a dll
• Developed WTL0809.dll, containing UK English spellings for meter, color and favorites (metre, colour, favourites)
• Fixed it so that if the Windows User language is English but NOT USA, then it uses UK spellings.
• Changed the default settings to better match the new capabilities.
• Increased the granularity of date/time display on the graph face.
• Added a registration check
• Changed to using .wtide.xml from .xtide.xml for saving persistent information
• Added the ability to:
• shade the graph for 'twilight' and speckle it for moonshine
• display the Sun's altitude and azimuth
• display the Moon's altitude and azimuth
• display the times of moonrise and moonset
• display tidal range
• display time before and after a min/max, a mark, and a slack event
• select the number of days to graph, and the 1st hour to display
• turn off the + at the graph creation time
• select the globe dot colour separately for reference and subordinate stations
• make the globe default longitude match the system timezone
• select station from globe and location list by typing in name
• allow user to resize the status bar items, and take extra lines if desired
• display a toolbar
• print the graph or chart
• copy the graph and/or chart to the clipboard
• ignore daylight saving time
• select short, long, or no descriptions for tide events (helps get calendar on page)
• send html text windows to web browser automatically.
• prepare calendars one month at a time, without having to fiddle with time spans etc.

David Flater (http://www.flaterco.com) has released XTide 2.6.  The main change from 2.5 to 2.6 is the addition of routines provided by Jan C Depner to replace the harmonic and offset data files with a new database. 
I have incorporated these routines into WTides 3.0.0.  In addition I have:

• Retained the previous method so either or both forms of data file can be used
• Added a graphical display to correspond broadly to the Maori Fishing Calendar.
• Improved the Help facility - all options now have context help.

Release 3.0.3 of WTides has:

• a few minor errors corrected
• a very slight performance improvement over 3.0.0.
• modified the structure of the program to separate the tide calculation routines into a separate dll.
• a new program, MDRTE.DLL added to the setup program for registered users.  This is a COM object, that can be called from other programs such as Word, Excel etc.
• Instructions for MDRTE.DLL added to distributed files

Release 3.0.5 of WTides has:

• a few minor errors corrected
• a significant performance improvement over 3.0.2.

Release 3.0.6 of WTides has:

• the ability to adjust the importance of incoming versus outgoing tide in the "good fishing" graph overlay.

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