Download Éclair

Download Éclair CMS 1.2.0 for free: a 402 KB archive with no database, released under the MIT license. Requirements, contents and SHA-256 checksum.

You can download Éclair CMS for free, with no sign-up: a single 402 KB archive contains the entire CMS, ready to upload to your hosting. No database to set up, no account to create, no “premium” version: everything is in the file.

Download Éclair 1.2.0 (ZIP, 402 KB)

Éclair 1.2.0 at a glance

1.2.0

latest version, released on October 29, 2026

402 KB

for the ZIP archive, under 1 MB once unzipped

MIT

a free software license, commercial use included

PHP 8.1+

no database, on Apache, LiteSpeed or Nginx

What’s in the Éclair archive?

An eclair folder to upload to your hosting, and three files to keep for yourself:

eclair/: the complete CMS (application, admin in 7 languages, theme, .htaccess protections).
LISEZ-MOI.txt (French for “read me”): the three-step installation and what to do if you forget your password.
LICENSE.txt: Éclair’s MIT license.
THIRD-PARTY-NOTICES.txt: the credit for the Lucide icons (ISC license) that some of the admin icons are derived from.

Then follow the installation guide or, if you’re with o2switch, the step-by-step cPanel guide.

What do you need to run Éclair?

Item	Requirement
PHP	8.1 or later (8.3 recommended), with the `mbstring`, `json`, `dom` and `session` extensions
Web server	Apache or LiteSpeed (`.htaccess` file included), or Nginx
Database	None
HTTPS	Strongly recommended (Let’s Encrypt is free)
Disk space	Under 1 MB, plus your images

How do you download Éclair CMS safely?

To make sure the file you downloaded is the one that was published, compare its SHA-256 checksum with this one:

a5d59d46641739b9e9292fb7367b6c83bde2dab4de797d2fbcf376dfcb3e8d83  eclair-cms-1.2.0.zip

To calculate your file’s checksum:

# macOS and Linux
shasum -a 256 eclair-cms-1.2.0.zip

# Windows (Command Prompt)
certutil -hashfile eclair-cms-1.2.0.zip SHA256

Once Éclair is installed, the admin’s Security page carries on this work: it compares every file with its original fingerprint and flags any modified or suspicious file.

Where can you find the source code?

All of Éclair’s code is public on GitHub, along with the version history, the tests and the full guide in 7 languages:

Repository: github.com/Jacckisback/eclair-cms
For developers: git clone https://github.com/Jacckisback/eclair-cms.git, then see the developer page to run the development server and the tests.
What’s new in each version: the changelog.

Questions about downloading

Is Éclair CMS really free?

Yes. Éclair is distributed under the MIT license: you can use it, modify it and redistribute it, even for commercial use or client sites, as long as you keep the copyright notice.

Do I need an account to download Éclair?

No. The download is direct and requires no sign-up, from this page or from the GitHub repository.

How can I find out when a new version comes out?

Check the changelog, follow the blog’s RSS feed or turn on “Watch › Releases” on the GitHub repository. You update by replacing the app and assets folders, as explained in the documentation.

Can I install Éclair for my clients?

Yes, the MIT license allows it without restriction. You can also customize the theme for each client.