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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryTourism & HospitalityClubs, Bars & Event VenuesWinterthurOsttor AG
Osttor AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company OSTTOR offers event and venue services, particularly the rental of spaces for various occasions such as workshops, meetings, conferences, seminars, corporate events, parties, music and cultural events.

AI-generated
Offering

Products & services

Industry:Clubs, Bars & Event Venues
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Osttor AG

✓ Offered
7
Event venue
Event venue for seminars, workshops, meetings, conferences, corporate events, aperitifs, readings, presentations, concerts and small trade fairs.
Halls & rooms for rent
Halls, gallery and meeting rooms bookable flexibly, with different capacities for events, usable individually or in combination.
Event technology
Projectors, large screens, monitors, flip charts, handheld microphones, headsets, sound system as well as supplementary lighting and audio technology via partners.
Catering
Coffee breaks with coffee, tea, mineral water, fruit juice, gipfeli, pastries, snacks and fruit; free choice of catering with your own or in-house partners.
Furniture and equipment rental packages
Rental of tables, chairs, standing tables, tablecloths, pin boards, lectern, flip chart, moderator case and refrigerator.
Logistics and direct delivery
Direct delivery and unloading zone connected to the halls for easy loading and unloading and short transport routes.
Support for entertainment and decoration
Brokerage and organization of bands, magicians, music, cabaret, hosting, theatre, circus arts as well as floristry and event decoration.
Trust & reputation

ranQ Trust Score of Osttor AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Osttor AG scores 71.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.51.524%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.100.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Osttor AG scores 84.8 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.89.612%
  • 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.70.07%
Osttor AG scores 85.0 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).85.022%
Osttor AG scores 42.9 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 35.42.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Osttor AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.0 out of 5 stars from 88 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4
of 5

Aggregated from 88 reviews across all connected sources

Sources
GGoogle488
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Gärtnerstrasse 18
8400 Winterthur

At a glance

Legal form
Corporation
UID
CHE-286.671.637
Founded
2015 · 11 years
Last commercial register change
October 21, 2024
Employees
11 to 20
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.
100.0
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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