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Xerox PARC Interim File System (IFS) archive

With the permission of the Palo Alto Research Center (a Xerox company), the Computer History Museum is pleased to make available, for non-commercial use only, snapshots of source code, executables, documentation, font files, and other files. The files are organized by the original server on which they resided at PARC. For each server, there are one or more top-level directories containing subdirectories and files. Each file is generally presented two ways: in a viewable format (e.g., HTML, PDF), and in its original format (referred to as "raw" in the directory listings).

We invite you to explore the archive itself.

Alternatively, you may prefer to explore the archive by viewing the walkthrough page, which provides more context on the various projects and programs, who wrote them, links to references, and details about the archive, including provenance, naming conventions, file types, etc.


  1. [_CD4_]
  2. [_CD6_]
  3. [_CD8_]
  4. [_CDCSL_93-16_]
  5. [_CDMiwok_01_]
  6. [cherry]
  7. [Cyan]
  8. [Erinyes]
  9. [eris]
  10. [eros]
  11. [Ibis]
  12. [Indigo]
  13. [IO]
  14. [Ivy]
  15. [phylum]
  16. [Pixel]
  17. [qv]


205797 total files; 144052 unique crc32s

Extension frequencies

Author frequencies

Cross-reference by name

Conversion log