What technology does openacs.org use?

We did not detect any specific technologies for openacs.org in the latest scan.

Is openacs.org secure (HTTPS)?

Yes. openacs.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 19, 2026.

What is openacs.org's SEO score?

openacs.org scored 70/100 for SEO in the latest analysis (fair).

What is openacs.org's overall website score?

openacs.org has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.

openacs.org

OpenACS Home

Last scanned Jul 26, 2026, 5:17 AM · 1 view

Overall score

Excellent

Summary

OpenACS is an open source toolkit for building scalable, community-oriented web applications. This website is hosted on UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

OpenACS is an open source toolkit for building scalable, community-oriented web applications. OpenACS is the foundation for many products and websites, including the .LRN (pronounced "dot learn") e-learning platform.

Austria

Hosted on UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT

Top issues to fix

6 issues found

Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.
1 broken link on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

5 issue(s) found

100

Performance

237 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Contact

Email, phone, and address published on this site's own pages.

Email: webmaster@openacs.org

Meta tags

Title: OpenACS Home
Description: OpenACS is an open source toolkit for building scalable, community-oriented web applications. OpenACS is the foundation for many products and websites, including the .LRN (pronounced "dot learn") e-learning platform.
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider: UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT
CDN provider: —
IP address: 137.208.116.31
ASN: AS1776 (UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT)

DNS records

Type	Value
A	137.208.116.31
AAAA	—
MX	smtp.openacs.org
TXT	v=spf1 mx -all
NS	ns2.wu-wien.ac.at ns1.wu-wien.ac.at
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: openacs.org
Valid from: Jun 21, 2026
Valid to: Sep 19, 2026
Days until expiry: 55
SAN domains: dotlrn.com, dotlrn.net, dotlrn.org, openacs.net, openacs.org, openacs.wu-wien.ac.at, openacs.wu.ac.at, smtp.openacs.org, www.openacs.net, www.openacs.org, www.xotcl.org, xotcl.org

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyEnabled
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 4 · H3 9

Links

44 internal · 9 external · 1 broken

Images

7 total · 1 missing alt

Scripts / Styles

3 scripts · 1 stylesheets

JS / CSS size

129 KB · 135 KB

Page size

23.0 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 35
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Meta description longer than 160 characters
Missing canonical link
No structured data (JSON-LD) found
Missing OpenGraph tags
sitemap.xml not found

Scan details

Requested URL: https://openacs.org
Final URL: https://openacs.org
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 237 ms
HTML size: 23.0 KB
Redirect chain: https://openacs.org

See something wrong on this report? Request a correction

Same hosting provider

r-project.org

R: The R Project for Statistical Computing

apachejquerybootstrap

UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT

Frequently asked questions

What technology does openacs.org use?: We did not detect any specific technologies for openacs.org in the latest scan.
Is openacs.org secure (HTTPS)?: Yes. openacs.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 19, 2026.
Who hosts openacs.org?: openacs.org is hosted on UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT.
What is openacs.org's SEO score?: openacs.org scored 70/100 for SEO in the latest analysis (fair).
What is openacs.org's overall website score?: openacs.org has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.