Software · Alpha pre-release

ACH Next: Analysis of Competing Hypotheses

A desktop successor to PARC ACH 2.0.5. It reads the classic .ach format and adds three things:

  • Every cell answers one defined question
  • A weight-of-evidence score beside the classic inconsistency count
  • A “Which evidence is decisive?” check that lists the evidence your leading hypothesis depends on

Alpha pre-release. An early version for trying out, not yet for operational use. Keep copies of files that matter to you, and tell us about anything that goes wrong.

ACH Next 0.2.1

Alpha pre-release

PlatformRequiresInstaller
Windows10 or 11Download SHA-256
macOS10.15 or laterDownload SHA-256
Linux.debDownload SHA-256
Linux.rpmDownload SHA-256

Free software under the MIT licence. The builds are not code-signed, so Windows and macOS ask you to approve the first launch.

Install from a terminal

The script downloads the installer, checks its SHA-256 checksum and installs it, without the prompts below.

  • macOS: curl -fsSL https://thabor.cz/files/ach/install.sh | sh
  • Windows (PowerShell): irm https://thabor.cz/files/ach/install.ps1 | iex
Opening an unsigned build
  • Windows: if SmartScreen says “Windows protected your PC”, click More info, then Run anyway.
  • macOS: open ACH Next once and click Done. Then open System Settings → Privacy & Security, click Open Anyway next to the ACH Next message and confirm with your password. You only need to do this once.
  • Linux: on Debian or Ubuntu, run sudo apt install ./ACH-Next_0.2.1_amd64.deb; on Fedora, run sudo dnf install ./ACH-Next-0.2.1-1.x86_64.rpm.

Offline, MSI and AppImage installers are available on request.

Uninstall

On Windows, use Settings → Apps. On macOS, drag ACH Next to the Trash. On Linux, remove the package with your package manager.

Upgrading from ACH 0.1.1: the terminal install removes the old version for you. If you install by hand, first remove the old ACH the same way.

The ACH Next main window: five items of evidence rated against three hypotheses (attack, bluff, exercise), each with its credibility and relevance