Utilities
Links to various utilities we've made. See Setting up a BIN directory for Windows executables for instructions on creating a special folder for all miscellaneous EXE files.
Recommended reading
- Python Essential Reference by David M. Beazley. Look Inside
- Python Cookbook by David Beazley and Brian K. Jones. Look Inside
Affiliate disclosure: we get a small commission for purchases made through the above links
- cal.exe
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cal.exeis a Windows version of the Debian cal utility that displays a simple calendar in traditional format. - guiDumpASN1
- guiDumpASN1 checks the syntax of an ASN.1 data file and dumps the content in readable form in a Windows graphical user interface (GUI). Built around Peter Gutmann's ASN.1 data display code dumpasn1.c - see DumpASN1 for Windows.
- DumpASN1 for Windows
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The program
dumpasn1.exeis a version of Peter Gutmann's DumpASN1 program compiled for Windows. We didn't write this, we just compiled the source code so Windows users can use it. - Base64 utility for Windows
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The freeware Windows program
base64.exeis a conversion of the Linux base64 utility to encode/decode data and print to standard output. - Generate a digest value in base64
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A freeware utility
digestvalue.exeto compute the digest value in base64 encoding for a file or list of files. This value is suitable for including in the<DigestValue>node of an XML-DSIG document. - Freeware utilities to generate and check SHA-1, SHA-256, MD5 and CRC-32 checksums
- A set of four freeware command-line utilities that generate or verify SHA-1, SHA-256, MD5 and CRC-32 checksums for a file or list of files.
- Hexdump for Windows
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The freeware Windows program
hexdump.exeis a simplified version of the Linux utility to display file contents in hexadecimal. - shtmldiff
- A Python implementation of a side-by-side html diff program designed to run in Windows.
- wdiff for Windows
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A port of the original GNU
wdiffutility to Windows. - Wclock
- A free, customisable, always-on-top world time clock for Windows computers.
- MySecret
- A command-line freeware utility that can be used to encrypt and decrypt messages in an email-friendly manner. It works by encrypting or decrypting the contents of the clipboard. It can also work in file mode.
- bdcalc
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A command-line calculator and mini-programming language that works with very large unsigned integers.
New version 2.2 released 17 June 2016.
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This page last updated 11 September 2025
