BDOS replacements for CP/M 2 and 3

There are a number of public domain replacements for the CP/M BDOS. Here are their feature lists, extracted from their own documentation:

For CP/M 2

Z80DOS

There are three versions of Z80DOS available:

DOS +

Not to be confused with Digital Research's DOS Plus (a PC operating system, based on CP/M-86, which emulates PCDOS).

P2DOS

NovaDOS

ZSDOS

For CP/M 3

ZPM3

FreeDOS

The FreeDOS project is an attempt to write a free replacement for MSDOS. Try here for more information.

DR-DOS

See http://www.drdos.com/ for DR-DOS; this is still a commercial product.

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