SyscallTables is a reference collection and toolset for documenting Windows NT system call tables across operating system versions. It combines syscall information from many Windows builds into comparable tables. Coverage includes ntoskrnl, Win32k, and selected Isolated User Mode services on x86-64 systems. ARM64 tables are also available for supported Windows 11 releases. Included utilities can extract syscall lists and compose them into Markdown or HTML output for easier comparison. The repository spans legacy and modern Windows releases, making it useful for operating system research, reverse engineering, compatibility analysis, and historical comparison.

Features

  • Combined Windows syscall tables
  • Ntoskrnl service mappings
  • Win32k service mappings
  • x86-64 and ARM64 coverage
  • Markdown and HTML table generation
  • Cross-version syscall comparison

Project Samples

Syscall Tables Screenshot 1

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Categories

System

License

BSD License

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Syscall Tables Web Site

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Additional Project Details

Operating Systems

Windows

Programming Language

C

Related Categories

C System Software

Registered

2026-09-01
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