BEAR A lightweight enterprise class Linux distribution English GB
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A fuss-free lightweight Linux deployment

The AC Hosting Environment (ACHE) is a lean, trimmed down, version of a major Linux distribution that has existed since 2011. It is stable and has very long release cycles not more frequent than once per major release of RedHat Enterprise Linux. There are very few, if any, point releases. A small deployment footprint is provided though minimal functionality over bare bones installation.

ACHE has found use as a robust web, database, storage appliance, and virtualizaion server. It has been deployed in the following industries:

Education Education Finance Finance
- Securities
- Leasing
- Market Infrastructure
Publishing Publishing Broadcasting Broadcasting

ACHE logo

Download Latest Release

  ACHE Software release notes Offline Documentation
Version 4.1.1 4.1
Release Date Mar 7th, 2026 Feb 28th, 2026
Size 1.6 GiB 442.2 KiB
SHA1 Checksum 8F407F13414262516BA9FA7687A0540434423A2C 2A2A631BE274A6540D5414F4F20B98E48E2CC356
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Utilities

ACHE is bundled with a number of great utiities for simplifying setup and management. In most cases, these are portable to other Linux distributions and are free for use.

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AC Firewall

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AC Integrity

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AC X509 Authority

#NAME

Make Bash Installer

Although the utilities shown above should be generally portable as-is to any Linux distribution, they have only been tested and qualified with ACHE.

What's New?

Date Annoucement
Mar 12th, 2026 ACHE 5.0 beta has been released for evaluation. Please note, this version is not certified for use with BEAR at this time.
Mar 6th, 2026 The final ACHE 4.x version has been released as a post EOL special version 4.1.1.
Feb 20th, 2026 AC X509 Authority version 1.5.0 has been released with features for greater enterprise integration.
Nov 1st, 2025 Rocky Linux has been selected as the official successor to CentOS for the next major release of ACHE.