Walnut Creek CD-ROM

Here it is, the Grand Old Dame of CP/M software collections, a compendium of all the major CP/M repositories: SIMTEL, OAK, WUArchives and more. Walnut Creek was bought out, and today the CP/M CD is only available here (and here, and here, and ...)

The OAK Repository CP/M Collection

Once "the biggest of them all", OAK is now offline. A 1994 snapshot of its CP/M collection is part of the Walnut Creek CD, but *HUMONGOUS* CP/M also hosts this mirror, from ca. 1996, which contains some updates and changes.

WUArchives

The WUArchives are were a giant repository for software and sundry for a large variety of OSes and computer systems. On the CP/M side it mirrored OAK plus a small collection of Z-System software (now on the Walnut Creek CD). Grab OAK, grab this Z-System stuff, and you've got WU -- wu-hu!

SIMTEL-20

The brainchild of Keith Peterson, SIMTEL-20 was once the largest and best archive of CP/M software, and a host to both the CPMUG and SIGM collections. A 1994 snapshot of its CP/M collection is available on the Walnut Creek CD.

The Retro-Computing Archive

Gene Buckel's long-time archive site is home to the Commercial CP/M Archives, an attempt to collect as much formerly commercial CP/M software as possible. *HUMONGOUS* CP/M's mirror omits RetroArchive's copy of the Walnut Creek CD, but is otherwise complete. Mirror last updated Sept. 2011.

The Unofficial CP/M Website

The unofficial "official" home for binaries, source and documentation for the CP/M family of OSes, plus a small collection of CP/M applications software and 8080/Z80 emulators for a variety of platforms. Originally created by Tim Olmstead. If you're looking for CP/M itself, this is where to get it.

*HUMONGOUS* CP/M currently maintains multiple snapshots of this site in order to preserve material that was removed over the years.

The Demon Archives

A small archive with a focus on the Amstrad. A snapshot is on the Walnut Creek CD-ROM, but this mirror appears to be from a later date and includes numerous additions.

The Funet.fi Repository

A small Finnish site with a bit of a Commodore focus, it was relocated in 2005 to Zimmers.net. Archivers, communications utilities, editors, programming and a few Z-System utilities.

ZNode 51

One of the largest of the Z-Nodes, BBSes dedicated to ZCPR3 and the Z-System, enhanced, drop-in replacements for CP/M, ZNode 51 later moved its collection online.

John Elliot's Homepage

Sinclair, Amstrad, Digital Research's GEM, and a wealth of technical information on CP/M. and variants, with a focus on CP/M v3. This snapshot was taken in Sept., 2011.

Home of the Z80cpu

Thomas Scherrer's unparalled site dedicated to the Z80 family of CPUs. An entire library of technical information on every aspect of Zilog's famous creation. Now at www.z80.info

Update.uu.se Rainbow Collection

Dedicated to DEC machines, including the DEC Rainbow, a dual-CPU system which ran both CP/M and MS/PC-DOS. *HUMONGOUS* CP/M is mirroring the Rainbow collection.

CP/M How-to

A small unfinished CP/M How-To by an unidentified author. This site is so old and quaint I couldn't resist including it. Mirror date: 1998.

The CP/M-86 Software Repository

"A text-based web site devoted exclusively to 'CP/M-86 For The IBM, Version 1.1'", by someone identified only as "the Klaw".

Hal Bower's Homepage

"Hal Bower's homepage highlights his work with banked systems and 8-bit programming languages, and serves as the main distribution site for ZSDOS, the formerly commercial enhanced CP/M BDOS, and Z-System libraries and utilities.

CB Falconer's Homepage

One of the large figures of the CP/M community well into the 21st century, Chuck and his homepage have unfortunately gone into retirement, but never fear - *HUMONGOUS* CP/M has it covered. Of particular softwarely interest is Chuck's DOSPlus 2.5, along with a few additional utilities, in the CP/M downloads directory.

The Rlee Peters Archive

An absolutely amazing treasure trove of commercial software from dozens of software producers. You will find in the Rlee Peters Archive a stunning array of software preserved nowhere else. Warning: browsing this collection is habit-forming.

The Nathanael Culver Collection

"Collection"T is too kind a word for this motley miscellany. Think of it as rummaging through my attic. Lots of dupes, but an occasional gem - such as Bridger Mitchell's Backgrounder ii, a (complete?) scanned collection of The Computer Journal, release 1.24 of MYZ80, and Richard Conn's _ZCPR3: The Libraries_ and _ZCPR3 and IOPs: A Tutorial_.