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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryIT & CommunicationSoftware developerBaselklammerzu GmbH
klammerzu GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

klammerzu GmbH develops full-stack web applications and provides project management and services in accessible web development, UX design, SEO and performance optimisation. Its work also includes progressive web apps, databases and AI applications.

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Presence

Service area

Offering

Products & services

Industry:Software developer
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4.0/5

klammerzu GmbH

Web agency
✓ Offered5
Full-Stack Web development
Full-stack web applications, project management, accessible web, SEO, UX design, performance optimisation, AI, PWA and databases.
Project management
Project management for web projects, including coordination, development and support for digital initiatives.
Accessible web
Accessible web development with a focus on clear user interfaces and implementation according to current standards.
UX design
UX design for clear, easy-to-understand user interfaces and reduced complexity in web applications.
SEO
SEO for websites and web applications for better findability and visibility.
Trust & reputation

ranQ Trust Score of klammerzu GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 54% · As of November 2026

klammerzu GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
klammerzu GmbH scores 57.1 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.39.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
klammerzu GmbH scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
klammerzu GmbH scores 100.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

klammerzu GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Oberwilerstrasse 69
4054 Basel
Opening hours
Mon
09:00 - 18:00
Tue
09:00 - 18:00
Wed
09:00 - 18:00
Thu
09:00 - 18:00
Fri
Closed
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-289.469.925
Founded
2024 · 2 years
Last commercial register change
August 15, 2025
Employees
1 to 10

Active in 1 of 26 cantons

  • BSBasel-City
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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