1001 Smart Cities
🇦🇹 Vienna

Vienna Open Government Data Portal (data.wien.gv.at)

🤖 AI-generated summary · ◆ 15 sourced claims · 🔎 Last verified

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

15 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.

How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page

✎ Updated 5 Oct 2026 5 claims added. · 2 revisions in all What changed →

It opened in May 2011 with 30 machine-readable datasets, credited as Austria's first from a public administration. Publishing stayed voluntary until the Freedom of Information Act of 2025.

Outcome🔄 Ongoing
Evidence🏛️ Officialgrades the sourcing — this entry states no impact figure
what does this mean?The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →
Run byDigitales Wien / City of Vienna
Scale🏙️ City-wide

Part of 1001 Smart Cities — 1,216 documented projects · 🏙️ 8 more in Vienna · 📊 Open data guide · 🏛️ Governance projects

Launched in May 2011, data.wien.gv.at is widely credited as Austria's first Open Government Data portal run by a public administration; the old address now forwards to the city's page on the federal platform. The city now publishes several hundred datasets — geodata, transit and traffic feeds, statistics, environmental and administrative records — as a rule under CC BY 4.0, on the federal platform data.gv.at. Since Austria's Freedom of Information Act took effect on 1 September 2025, larger municipalities must proactively publish such information rather than release it voluntarily.

Live 📅 since 2011

🎓 Lesson

What Vienna began voluntarily in 2011, after a year of groundwork by an open-data community, became a legal duty in 2025 — and the city's own portal gave way to its page on data.gv.at, the federal platform the Freedom of Information Act designates as the national information register.

🏛️ GovernanceOpen dataDigital governmentGIS & cadastre

Sources

↗ Digitales Wien — Open Data (authority)Official portal overview, current dataset scope and license.
↗ Semantic Web Company — data.wien.gv.at: the process (independent)Published 30 May 2011Independent account of the portal's 2011 launch, calling it Austria's first OGD portal of a public administration.
↗ Digital Austria (authority)Austrian federal government page confirming the Freedom of Information Act took effect 1 September 2025.
↗ data.gv.at — Stadt Wien publisher page (federal open-data platform)Target of the redirect from data.wien.gv.at (observed as an HTTP 302 Location header). The page is a JavaScript app; its text could not be read.
Show your work What this page rests on and what it can’t tell you · all 15 claims with their sources · the forensic record

Evidence file · public beta 15 addressable claims, 4 source dossiers, one permanent baseline. The file is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.

Inspect the claims, one by one — verbatim text, sources and caveats for all 15

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-13f9664224ef4fe9 quantitative
Launched in May 2011
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
A contemporaneous account written thirteen days after the event dates the launch to the day: "On 17 May 2011 the time has come – the first Open Government Data (OGD) portal of a public administration in Austria was launched". The same piece describes the year of preparation that led to it, beginning with an open-data meetup at the Austrian Computer Society on 8 April 2010 and the incoming coalition's commitment to open data in November 2010.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Semantic Web Company — data.wien.gv.at: the process (independent)
Claim 2 clm-b10b443fa702d538 descriptive
data.wien.gv.at is widely credited as Austria's first Open Government Data portal run by a public administration
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The account states it directly: on 17 May 2011 "the first Open Government Data (OGD) portal of a public administration in Austria was launched – and it was the capital Vienna that did this courageous and so important step", taking "the role of a pioneer in the area of open data in our country".
Caveat
The claim rests on this one account, and its author was a participant rather than an observer: he co-founded the OGD Austria initiative, and his company's awareness project OGD2011 was part-funded by ZIT, the City of Vienna's own technology agency, while the firm also belonged to the EU project that consulted on the portal's implementation. The same account adds that the Open Commons Region Linz had announced a data portal before Vienna, for launch in September 2011, so Vienna was first to go live rather than first to commit.

Sources carrying this claim

  1. Semantic Web Company — data.wien.gv.at: the process (independent)
Claim 3 clm-417240c0dadf9b4a descriptive
The city now publishes several hundred datasets
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The city's own open-data page uses exactly this quantity: "Mehrere hundert Datensätze liefern beispielsweise detaillierte Auskunft über Einbahnen, historische Siedlungsräume, historische Luftbildaufnahmen, Messdaten von Luftschadstoffen oder WLAN-Standorte" — several hundred datasets covering one-way streets, historic settlement areas, historic aerial photography, air-pollutant readings and Wi-Fi locations. A count taken from the portal's own search interface on 22 August 2026 returns 770 datasets in the City of Vienna catalogue.
Caveat
The city gives no number and no reference date of its own, so "several hundred" is its wording rather than a measurement. The same page also states that City of Vienna datasets are now published on the federal platform data.gv.at, and the address data.wien.gv.at forwards there.

Sources carrying this claim

  1. Digitales Wien — Open Data (authority)
Claim 4 clm-6dea82d94348a9be descriptive
geodata, transit and traffic feeds, statistics, environmental and administrative records
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The page breaks the catalogue down along these lines: "Geodaten: Verwaltungsgrenzen, Adressregister, Verkehrsnetze, Gebäudeinformationen"; "Verkehrsdaten & Routing: Echtzeitdaten der Wiener Linien (Haltestellen, Linien, Stiege), Routingdaten für Fußgänger*innen, Radfahrer*innen und Autos"; "Öffnungszeiten von Ämtern"; and "Weitere Datenarten: Statistikdaten, Wahlergebnisse, Umwelt- und Wetterdaten, Bildungsdaten, Tourismus-Informationen, Gesundheitsdaten".
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digitales Wien — Open Data (authority)
Claim 5 clm-e6a8c6ee4a0a7cbc quantitative
under CC BY 4.0
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The city names the licence: "Die Publikation erfolgt in der Regel unter der Lizenz CC BY 4.0, was freie Nutzung bei Namensnennung erlaubt" — publication is, as a rule, under CC BY 4.0, which permits free re-use with attribution.
Caveat
The city writes "in der Regel" — as a rule — rather than claiming the licence for every dataset, so the entry states as a flat fact what the operator states as a norm. A check of all 770 City of Vienna datasets on data.gv.at on 22 August 2026 found 765 carrying CC BY 4.0 on every file they offer; four offer no files at all, and one offers six files with no licence named.

Sources carrying this claim

  1. Digitales Wien — Open Data (authority)
Claim 6 clm-94120fe32caf9a87 descriptive
on the federal platform data.gv.at
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The city's own open-data page states under the heading "Veröffentlichung": "Die Veröffentlichung von Datensätzen der Stadt Wien erfolgt auf der Plattform data.gv.at" — the City of Vienna publishes its datasets on the federal platform data.gv.at.
Caveat
The page does not say when publication moved there, so the sentence describes the arrangement today and not the one the portal launched with in 2011.

Sources carrying this claim

  1. Digitales Wien — Open Data (authority)
Claim 7 clm-5cae1d9a5af4508a quantitative
Since Austria's Freedom of Information Act took effect on 1 September 2025
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The federal government's page dates it: "Mit 1. September 2025 tritt die Novellierung des Bundes-Verfassungsgesetzes sowie die Einführung des Informationsfreiheitsgesetzes (IFG) in Kraft, womit auch die verfassungsgesetzliche Amtsverschwiegenheit aufgehoben und eine Informationsfreiheit eingeführt wird" — the constitutional duty of official secrecy is lifted on that date and a right of access is created. The City of Vienna repeats the date: "Seit dem 1. September 2025 ist das Informationsfreiheitsgesetz (IFG) in Österreich gültig."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digital Austria (authority)
  2. Digitales Wien — Open Data (authority)
Claim 8 clm-c7ec897a8d52af63 descriptive
larger municipalities must proactively publish such information
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The federal page states the duty and its size threshold: "Öffentliche Stellen sind künftig verpflichtet, Informationen von allgemeinem Interesse, wie in Auftrag gegebene Gutachten, Studien und Verträge, von sich aus zu veröffentlichen und über ein zentrales elektronisches Informationsregister zugänglich zu machen", and "Gemeinden bis zu einer Grenze von 5.000 Einwohnerinnen und Einwohnern sind von der Pflicht ausgenommen". The City of Vienna describes the same obligation in open-data terms: "Dadurch werden Behörden gesetzlich verpflichtet, ihre Daten aktiv als Open Government Data zu publizieren, solange diese keinen besonderen Schutzpflichten unterliegen."
Caveat
The exemption line sits at municipalities of 5,000 inhabitants or fewer, so "larger" covers most of the country's towns rather than only its cities, and the duty falls on federal, provincial and municipal administrative bodies alike. The federal page also draws the duty more narrowly than the passage suggests: what must be published is information of general interest — commissioned expert opinions, studies and contracts — and only the descriptive metadata has to be filed to the central register at data.gv.at, with the information itself staying where the authority holds it.

Sources carrying this claim

  1. Digital Austria (authority)
  2. Digitales Wien — Open Data (authority)
Claim 9 clm-b8d5fb21e89e502f descriptive
rather than release it voluntarily
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The city marks the change of footing: "Während OGD früher vor allem auf freiwilliger Basis für mehr Innovation und Transparenz gesorgt hat, ist das Veröffentlichen von Daten nun zur Pflicht geworden" — where open government data previously served innovation and transparency mainly on a voluntary basis, publishing has now become an obligation.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digitales Wien — Open Data (authority)
Claim 10 clm-fdbe3a057221e1cb descriptive
the old address now forwards to the city's page on the federal platform
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Requests to data.wien.gv.at are redirected to the Stadt Wien publisher page on data.gv.at.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. data.gv.at — Stadt Wien publisher page (federal open-data platform)
Claim 11 clm-77e708bc0256eacb quantitative
What Vienna began voluntarily in 2011
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The 2011 account dates the launch to 17 May 2011; Digitales Wien says that open government data used to happen mainly on a voluntary basis and has now become a duty.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Semantic Web Company — data.wien.gv.at: the process (independent)
  2. Digitales Wien — Open Data (authority)
Claim 12 clm-ca1aa0cd0edccd7e descriptive
after a year of groundwork by an open-data community
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The account says the road to 17 May 2011 started about a year earlier, with a first Open Government Data meetup on 8 April 2010 organised by enthusiasts from universities, companies and civil society, followed by the founding of the OGD Austria initiative.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Semantic Web Company — data.wien.gv.at: the process (independent)
Claim 13 clm-c40bbd6a6ad96195 quantitative
became a legal duty in 2025
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Digitales Wien states that the Freedom of Information Act has applied since 1 September 2025 and obliges authorities to publish their data actively; Digital Austria confirms the law takes effect on that date with a proactive publication duty.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digitales Wien — Open Data (authority)
  2. Digital Austria (authority)
Claim 14 clm-e88612b6c926d2ac descriptive
the city's own portal gave way to its page on data.gv.at
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The old data.wien.gv.at address redirects to the City of Vienna's publisher page on data.gv.at, and Digitales Wien says the city's datasets are published on the platform data.gv.at.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. data.gv.at — Stadt Wien publisher page (federal open-data platform)
  2. Digitales Wien — Open Data (authority)
Claim 15 clm-96e273c8233eb424 descriptive
the federal platform the Freedom of Information Act designates as the national information register
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Digital Austria states that under section 5 of the Freedom of Information Act the open-data platform data.gv.at was designated as the information register.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digital Austria (authority)
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-10-05-p4-quality-run effective 2026-10-05 · created 2026-10-05

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:51b003b82cbcacb9377578657ab7952e6eaaa7c3f8ed52e364de87a26dd112e4
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
15
of 15 claims mapped
4
source dossiers
1
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Digitales Wien / City of Vienna
Actor types
city-government
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

4 source dossiers

Digitales Wien — Open Data (authority) digitales.wien.gv.at · 10 linked claims

Open original source ↗

Stable source ID
src-d712b706082d6fe1
Publisher
Name not classified · digitales.wien.gv.at
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Official portal overview, current dataset scope and license.

Descriptive only — not page/paragraph exact
Claims linked
Semantic Web Company — data.wien.gv.at: the process (independent) semantic-web.com · 4 linked claims

Open original source ↗

Stable source ID
src-717ea7c62d119a98
Publisher
Name not classified · semantic-web.com
Type / language
web-page · language not classified
Published
2011-05-30
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Independent account of the portal's 2011 launch, calling it Austria's first OGD portal of a public administration.

Descriptive only — not page/paragraph exact
Claims linked
Digital Austria (authority) digitalaustria.gv.at · 4 linked claims

Open original source ↗

Stable source ID
src-15dbd0126da0d056
Publisher
Name not classified · digitalaustria.gv.at
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Austrian federal government page confirming the Freedom of Information Act took effect 1 September 2025.

Descriptive only — not page/paragraph exact
Claims linked
data.gv.at — Stadt Wien publisher page (federal open-data platform) data.gv.at · 2 linked claims

Open original source ↗

Stable source ID
src-e61e0689196a703e
Publisher
Name not classified · data.gv.at
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Target of the redirect from data.wien.gv.at (observed as an HTTP 302 Location header). The page is a JavaScript app; its text could not be read.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this file
  • Publisher names and source languages have not yet been classified; domains are recorded without guessing.
  • Existing source notes are descriptive locators, not page- or paragraph-exact citations.
  • A missing archive, publication date or content hash is shown as null rather than inferred.
  • The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.

Continue exploring

Compare this project

🇫🇮 Helsinki Region Infoshare (HRI) Open Data Portal · Helsinki Helsinki Region Infoshare launched the same year (2011), pooling four cities' data; this portal covers one city but is Austria's first. 🇪🇸 Open Data BCN · Barcelona Europe's 2011 open-data wave: Vienna opened Austria's first city portal the same year Barcelona launched Open Data BCN. 🇫🇷 Paris Open Data Portal (Paris Data) · Paris Both opened in 2011: Vienna's was Austria's first city portal; Paris published its datasets under the open ODbL licence.

Explore the wider context

💸 The Price Nobody Publishes📖 Open data📖 Urban data platform (UDP)📖 Building performance standard (BPS)
📎 Cite this project

1001 Smart Cities (2026). “Vienna Open Government Data Portal (data.wien.gv.at)” — Vienna, Austria. The Smart City Atlas. https://1001smartcities.org/projects/vienna-open-data-portal/ (last verified 2026-10-05). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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