Overton - Policy Documents

Screenshot of Overton
Latest screenshot: 2024-07-09
Access to search interface:
paywalled
Last major interface update:
N/A
Owner of search system:
Open Policy Ltd.
Location of system headquarters:
London, UK
Year of launch:
2018
Type:
Bibliographic database
X-Handle:
Description of database (by system owner)
Our flagship database allows users to discover more than 13 million policy documents and grey literature and their links to each other, to academic papers and to relevant people and topics. Coupled with Overton Engage – a platform to connect experts with decision makers – we’re the leading tool to understand and influence policy.
Description of search system (by system owner)
Yes, Overton is a start-up, but we have some pretty big ambitions. We built our platform with a basic but bold goal – to improve policymaking across the world. Policy decisions shape lives, so it’s obvious to us that they should be based on the best evidence available. Sounds simple, right? To accomplish this, policy must be visible and policymakers must be accessible, so that knowledge can easily flow to those who need it. We see ourselves as a bridge, connecting researchers and policymakers – we want to empower decision-makers to recognise and utilise good evidence and help experts understand how to influence and affect change.
Total coverage:
13.50M
Year-over-year growth (2022-2023):
-11.17%
Subject coverage:
Multidisciplinary
Retrospective coverage:
1923–2024
Record types:
9
Open Access records:
N/A

Search functionality and interface

Systematic keyword searching:
extensive 
Backward citation searching:
extensive 
Forward citation searching:
sufficient 
Query builder:
Search history:
Match preview:
Sorting options:
5

Query

Latency with short query:
1.8 seconds
Latency with long query:
2.5 seconds
Controlled vocabulary:
Field codes:
5
Full text search:
Search string length (narrow):
250 terms max.
Search string length (wide):
250 terms max.
Language support: Chinese:
Language support: Cyrillic:
Truncation:
Wildcards:
Keyword position irrelevant:
Longer strings, fewer hits:
Automatic query expansion (stemming):
Verbatim queries:
Reproducible queries (time):
Reproducible queries (locations):

Operators

Search operators:
4
Boolean 'OR':
Boolean 'AND':
Boolean 'NOT':
Proximity operator:
Boolean works exact:
Nested search (parentheses):

Citation search / filtering

Record type filters:
9
Results filters:
26
Suggested related records:
Supported by bibliometric tools:
N/A
Backward citation information:
Backward citation score:
N/A
Forward citation information:
Forward citation score:
N/A

Retrieval

Number of accessible records:
5000
Bulk select records:
Bulk export records:
100000
Export formats:
4
API:
upon request 
Bulk select records' backward citations:
Bulk export backward citations:
250000
Bulk select records' forward citations:
Bulk export forward citations:
Full
Pinned databases 0/6
Trusted by
JKU LinzUniversität Innsbruck
Funded by
FWF