Concrete CMS (formerly concrete5) is an open-source CMS known for its intuitive in-context editing — content editors can make changes directly on the live page without navigating a complex admin panel. Trusted by organizations like the U.S. Army and Portland State University, it combines ease of use with enterprise-level features like granular permissions, versioning, and workflow approvals. Concrete CMS is ideal for organizations that need non-technical staff to manage content confidently and independently.
In-Context Visual Editing
Custom Block Development
Theme Development & Customization
Workflow & Content Approval Systems
Version Control & Page History
Granular Permission Management
Multi-language Support
Form Builder & Data Collection
SEO & Analytics Tools
Integration with External Systems
Common questions
What makes Concrete CMS different from WordPress?
The biggest difference is in-context editing: you edit content directly on the live page instead of in a separate admin panel. That makes it very easy for non-technical editors. Version control and approval workflows are built in too.
Is Concrete CMS suitable for large organisations?
Yes. With granular permissions, approval workflows and enterprise-grade security, Concrete CMS suits organisations that need strict control over content. The U.S. Army uses it for exactly that reason.
Can several editors work with approval before publishing?
Yes. Workflows and approvals are built in, and every change is saved in the page history so you can see who changed what and roll back to an earlier version.
Can you build custom blocks and themes in Concrete CMS?
Yes. We develop custom blocks and themes, forms for data collection and connections to external systems, so editors get building blocks shaped around your content.
Next step
Tell us what you want to build.
Describe your project or question and we will get back within one working day with an honest answer on scope, time and cost.
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Cookie policy
A Greater Star Vision SL ("we"), a company incorporated under Spanish law with its registered seat in the province of Málaga, Spain, operates this website. This cookie policy describes how we use cookies and similar technologies (browser storage and measurement pixels) in accordance with Article 22 of Spanish Law 34/2002 (LSSI-CE), the GDPR and the guidance issued by the Spanish Data Protection Authority (AEPD).
Cookies are small text files that are saved on your computer, phone or tablet when you visit the website. We also use storage in your browser that works in a similar way. It helps the website remember your choices for a certain time. You can delete or block cookies in the browser, but parts of the website may then stop working.
How you give consent
The first time you visit the website, a cookie banner is shown where you choose what may be saved. Nothing beyond necessary cookies is saved before you have made an active choice. Everything except necessary cookies is off by default.
Persistent and temporary cookies
There are two kinds of cookies: persistent and temporary (session cookies). Persistent cookies are saved on your device for the time given in the tables below. Session cookies are deleted when you close the browser.
Cookies and storage used here
Necessary
Login, security and your cookie choice. Cannot be switched off.
Name
Purpose
Retention
Set by
gs_pCookie
Saves your cookie choice and a random consent ID, so that the banner is not shown again and your choice can be shown afterwards.
6 months
Greater Star
wordpress_logged_in_*Cookie
Keeps you logged in to your account.
Until you close the browser, or 14 days if you choose to stay logged in
Greater Star
wordpress_sec_*Cookie
Secure login (protects the account).
Same as the login
Greater Star
wordpress_test_cookieCookie
Checks that the browser accepts cookies when logging in.
Until you close the browser
Greater Star
wpEmojiSettingsSupportsSession storage
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Until the browser is closed
Greater Star
anno-chat:greaterstarLocal storage
Remembers your conversation in the chat. Saved only after you have sent a first message.
Until you clear your browser data
Anno One
Statistics and functionality
Visit statistics (Google Analytics) that help us improve the site. Only saved if you have said yes.
Name
Purpose
Retention
Set by
gs_sSession storage
Remembers which campaign or site the visit came from, for the statistics (only after consent).
Until the browser tab is closed
Greater Star
_gaCookie
Tells visitors apart in the statistics (only after consent).
13 months
Google Analytics
_ga_*Cookie
Keeps a visit together in the statistics (only after consent).
13 months
Google Analytics
Marketing
Measures visits from our ads on LinkedIn, Facebook and Instagram, so that we show them to the right people. Only saved if you have said yes.
Name
Purpose
Retention
Set by
_fbpCookie
Measures visits from ads on Facebook and Instagram (only after consent).
3 months
Meta
li_*Cookie
Measures visits from ads on LinkedIn (only after consent).
6 months
LinkedIn
Embedded services from others
Some pages show content from other services, for example videos. The service is loaded from their servers when the page is shown and is covered by their own terms.
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Purpose
Retention
Set by
chat.annoone.comExternal service
The chat box is fetched from this service on every page. What you write in the chat is sent to it and to an AI provider, to create the answer.
Conversations are deleted after 24 months
Anno One
Third-party cookies
If analytics or advertising services from third parties are activated, their cookies are only set after your consent. We do not control how a third party uses the information.
Change or remove
You can change your choice at any time via ”Cookie settings” in the menu or in the footer. You can also clear or block cookies in your browser settings. If you block cookies, parts of the website may stop working.
Your consent ID:
Last updated 2026-10-18.
International transfers
Google, Meta and LinkedIn may process data outside the EEA. This only happens if you have consented to the category concerned, and transfers are carried out in accordance with Chapter V GDPR. See each provider’s own privacy policy.
Limitation of liability
To the maximum extent permitted by Spanish law, we disclaim all liability for damages or loss of functionality arising from (a) third-party cookies or services, (b) cookies you have blocked or deleted, or (c) your browser or device not supporting the technologies we use.
Changes
We may update this cookie policy from time to time. The version in force is the one published on this page at the time of your visit.
Governing law and jurisdiction
This cookie policy is governed by Spanish law. Any dispute arising in connection with this policy shall be submitted to the exclusive jurisdiction of the courts of Málaga, Spain, except where mandatory consumer protection rules apply.