# Install ktoblzcheck with Homebrew, apk, MacPorts, pacman, zypper Library for German banks. Version 1.59 via Homebrew; verified from local package data. Also installable with apk: sudo apk add ktoblzcheck. ## Install ```sh sudo av install brew:ktoblzcheck ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install ktoblzcheck ``` Evidence: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install ktoblzcheck ``` Evidence: MacPorts ports tree: devel/ktoblzcheck/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - apk (92%): ```sh sudo apk add ktoblzcheck ``` Evidence: Alpine Linux edge package indexes: ktoblzcheck from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz - pacman (92%): ```sh sudo pacman -S ktoblzcheck ``` Evidence: Arch Linux sync databases: ktoblzcheck from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz - zypper (92%): ```sh sudo zypper install ktoblzcheck ``` Evidence: openSUSE Tumbleweed package metadata: ktoblzcheck from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst ## Package facts - **Package key:** brew:ktoblzcheck - **Package manager:** Homebrew - **Version:** 1.59 - **Source summary:** Library for German banks - **Homepage:** - **Generated:** 2026-08-03T19:37:03+00:00 ## Executables - ibanchk (alias) - ktoblzcheck (alias) - ktoblzupdate (alias) ## Install behavior - Bottle: not available ## Freshness - Page generated: 2026-08-03 - Package-manager version: 1.59 ## Project history and usage KtoBLZCheck is a C/C++ library and set of command-line tools for checking German and other bank account numbers, bank codes, and IBANs. Its documentation explains the name as a combination of Konto, the German abbreviation for account number, and BLZ, the German bank-code abbreviation. ### Project history The SourceForge project was registered on 2002-08-17, making it a long-running finance-oriented open source library from the SourceForge era. The project page describes it as based on Deutsche Bundesbank specifications for German bank codes. The Doxygen documentation identifies Fabian Kaiser as the original author, with Christian Stimming and Alexander Kurz listed as maintainers. Over time the package grew beyond a single checker into a library, CLI tools, IBAN checking, Python bindings, CMake build support, and conversion of Bundesbank bank-data files into ktoblzcheck's compact runtime format. ### Adoption history KtoBLZCheck's adoption is strongest in accounting, finance, and personal-finance software stacks that need offline validation of German account identifiers. Its packaging across Homebrew, MacPorts, Linux distributions, and SourceForge tarballs reflects a stable library dependency rather than a fashionable end-user CLI. The project also exposed web checkers for bank accounts and IBANs, and the documentation names related bindings and implementations such as rbktoblzcheck and konto_check. ### How it is used The package provides the `ktoblzcheck`, `ibanchk`, and `ktoblzupdate` executables. The documented CLI checks a bank-code/account-number pair, can emit single-line tab-delimited output for batch processing, and uses bank-data files derived from Deutsche Bundesbank BLZ data. ### Why package nerds care KtoBLZCheck is package-nerd interesting because it is code plus regulated reference data. Releases are not just API changes; they also track bank-data validity periods, Bundesbank source-file changes, and build-system support for downstream distributors. ### Timeline - 2002-08-17: KtoBLZCheck registered on SourceForge. - 2007-11-07: ktoblzcheck 1.16 release appeared in the SourceForge file feed and introduced the documented multiple-validity-period bank-data behavior. - 2017-03-02: SourceForge file listing identified ktoblzcheck-1.49.tar.gz as the download-page version. - 2025-05-20: SourceForge code feed recorded the commit titled Release version 1.59. ### Related projects - KtoBLZCheck is tied to Deutsche Bundesbank bank-code data, IBAN validation, KMyMoney-style personal finance applications, rbktoblzcheck, and konto_check. ### Sources - - - - - ## Security Notes library-like package without higher-risk signals. - **Geiger risk:** green / low - library-like package without higher-risk signals ## Other Package-Manager Records - apk - ktoblzcheck - 1.59-r1: normalized package name match | Alpine Linux edge package indexes: ktoblzcheck from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | A library to check account numbers and bank codes of german banks | https://ktoblzcheck.sourceforge.net/ - apk - ktoblzcheck-dev - 1.59-r1: normalized package name match | Alpine Linux edge package indexes: ktoblzcheck-dev from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | A library to check account numbers and bank codes of german banks (development files) | https://ktoblzcheck.sourceforge.net/ - apk - ktoblzcheck-doc - 1.59-r1: normalized package name match | Alpine Linux edge package indexes: ktoblzcheck-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | A library to check account numbers and bank codes of german banks (documentation) | https://ktoblzcheck.sourceforge.net/ - pacman - ktoblzcheck - 1.53-8: normalized package name match | Arch Linux sync databases: ktoblzcheck from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | A library to check account numbers and bank codes of German banks | http://ktoblzcheck.sourceforge.net - zypper - ktoblzcheck - 1.59-1.5: normalized package name match | openSUSE Tumbleweed package metadata: ktoblzcheck from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | A library to check account numbers and bank codes of German banks | http://ktoblzcheck.sourceforge.net - zypper - ktoblzcheck-devel - 1.59-1.5: normalized package name match | openSUSE Tumbleweed package metadata: ktoblzcheck-devel from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | KtoBLZCheck development files | http://ktoblzcheck.sourceforge.net - zypper - libktoblzcheck1 - 1.59-1.5: normalized package name match | openSUSE Tumbleweed package metadata: libktoblzcheck1 from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | Shared Libraries for ktoblzcheck | http://ktoblzcheck.sourceforge.net - zypper - python3-ktoblzcheck - 1.59-1.5: normalized package name match | openSUSE Tumbleweed package metadata: python3-ktoblzcheck from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | KtoBLZCheck python-bindings | http://ktoblzcheck.sourceforge.net - MacPorts - ktoblzcheck: normalized package name match | MacPorts ports tree: devel/ktoblzcheck/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## Combined YAML source View the package source record on GitHub. [combined/ktoblzcheck.yml](https://github.com/mxcl/pkgdb/blob/main/combined/ktoblzcheck.yml) ## Sources - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph