3.0a, Windows 3.0 MME 16-bit (WLO) – File size: 78,432 bytes; Date stamp: 09-23-91; Confirmed in: WLO 1.0 Note: recompiled from the Windows 3.0 sources to demonstrate the Windows Libraries for OS/2. 16-bit w/ OLE – File size: 93,184 bytes; Date stamp: 12-31-93; Confirmed in: Windows 3.10, 3.11, Windows for Workgroups 3.10, 3.11, Win-OS/2 3.1, Windows 98 SE 32-bit – File size: 101,008 bytes; Date stamp: 05-25-95; Confirmed in: Windows NT 3.10, 3.50, 3.51 (diskette and CD-ROM) DEC Alpha – File size 148,240 bytes; Date stamp; 05-25-95; Confirmed in: Windows NT 3.51 MIPS – File size 156,432 bytes; Date stamp; 05-25-95; Confirmed in: Windows NT 3.51 PPC – File size 171,280; Date stamp 05-25-95; Confirmed in: Windows NT 3.51 Replacements Microsoft never released a program to replace Cardfile following the discontinuation of its development. However, Schedule+, which appeared with Windows 95, and Outlook Express, which appeared with Windows 98, have built-in contact managers which can replace Cardfile's use as a contact manager. Schedule+ also had the ability to import Cardfile .crd files through its Import/Export Add-on pack. Third party applications exist which support opening and/or modification of Cardfile files for Linux. Running under later Windows versions The 16-bit Windows 3.1 version of Cardfile (file version 3.10.0.103) can run on all x86-based 32-bit versions of Windows including both Windows 10 Home and Pro 32-bit. Version 3.10.0.103 was included on the Windows 98 and Windows Millennium Edition installation CD but was not installed by default. In 64-bit versions of Windows, the 32-bit version from Windows NT 3.51 has to be used and will run on both Windows 10 Home and Pro. It supports long file names and has some support for Unicode characters. At the time of NT 3.51 development in the late 1980s, Unicode was fixed-format 2 bytes, now known as UCS-2 and considered obsolete as the later 1996 implementation of UTF-16 allowed for variable-length formatting. Therefore NT 3.51 will reveal its shortcomings for those cardfile cards containing variable-length encoded characters, as such characters will not display properly. References External links Discontinued Windows components