hmCal is available as a universal binary bundle for Macintosh and Windows. It was developed and tested with the current 4D versions 4D v12.5 and 4D v13.2. hmCal is only available for 4D v12.5 and above. hmCal supports the following operating systems: Mac 10.6.8, Mac 10.7.4, Mac 10.8.2, Windows XP, Vista, Windows 7 and Windows 8.
hmCal allows you to add simply and quickly a complete calendar functionality into your 4th Dimension application. It is always guaranteed that functionality between Macintosh and Windows is identical.
The advantage of hmCal is that it can be integrated extremely simply into existing solutions. A further advantage is that hmCal has NO direct access to your data. So appointments, virtual appointments (they do not have to exist in data records), repeated appointments etc. in complex situations (rights of access, on-the-fly-creation) can be represented and manipulated.