About INPLASY

A global home for transparent research.

We help researchers make their evidence synthesis protocols visible, citable and accessible. Since 2020, our community has grown across borders, disciplines and research designs.

Register a protocol Explore our global reach

Systematic reviews · Meta-analyses · Scoping reviews · Methodological studies

An international community 100 countries represented in protocol registrations Shared methods. Worldwide visibility.
9,700+Registered protocolsA growing public research record
192Countries & territories reachedLocations with website views
937.1KWebsite viewsWorldwide interest in our platform
248.6KVisitorsReported in the analytics overview

Updated 16 September 2026 · Website analytics: 1 May 2020 – 16 September 2026

Our purpose

Better evidence starts with
clear, shared methods.

01 / OUR MISSION

Make research plans visible.

To provide researchers worldwide with the opportunity to register and share evidence synthesis protocols rapidly and without barriers. INPLASY helps reduce duplication of research efforts, minimizes reporting bias, and promotes transparency and integrity in scientific research.

02 / OUR VISION

A platform with global reach.

To deliver an innovative global platform for the registration of evidence synthesis protocols.

Connecting researchers through a public record of their planned methods.

Our global reach

Research that reaches
across borders.

Authors from 100 countries have registered protocols with INPLASY. Our website has reached readers in 192 countries and territories.

INPLASY around the world Website views by location
Global distribution of INPLASY website views The supplied analytics map for 1 May 2020 to 16 September 2026, displayed in the INPLASY teal palette. Darker teal indicates more views, with a scale from 1 to 328,776. China has 328,776 views, followed by the United States with 117,564. The complete accessible location table appears below.
1 May 2020 – 16 September 2026Darker teal indicates more website views

A community of authors.
A worldwide audience.

Protocol registrations show where our contributing authors are based. Website views show where people access the platform. Explore both lists below to see the breadth of INPLASY’s international presence.

100 Countries with registered protocols

Researchers from these countries have contributed protocols to INPLASY. Each country appears once, including countries represented in international collaborations.

  • 01Afghanistan
  • 02Angola
  • 03Australia
  • 04Austria
  • 05Bahrain
  • 06Bangladesh
  • 07Belgium
  • 08Bolivia
  • 09Brazil
  • 10Bulgaria
  • 11Burkina Faso
  • 12Cambodia
  • 13Canada
  • 14Chile
  • 15China
  • 16Colombia
  • 17Congo
  • 18Côte d’Ivoire
  • 19Croatia
  • 20Cyprus
  • 21Czechia
  • 22Denmark
  • 23Ecuador
  • 24Egypt
  • 25Estonia
  • 26Ethiopia
  • 27Finland
  • 28France
  • 29Gambia
  • 30Germany
  • 31Ghana
  • 32Greece
  • 33Hungary
  • 34India
  • 35Indonesia
  • 36Iran
  • 37Iraq
  • 38Ireland
  • 39Israel
  • 40Italy
  • 41Jamaica
  • 42Japan
  • 43Jordan
  • 44Kazakhstan
  • 45Kenya
  • 46Kosovo
  • 47Kuwait
  • 48Latvia
  • 49Lebanon
  • 50Libya
  • 51Lithuania
  • 52Malawi
  • 53Malaysia
  • 54Mexico
  • 55Morocco
  • 56Mozambique
  • 57Myanmar
  • 58Netherlands
  • 59New Zealand
  • 60Nigeria
  • 61North Macedonia
  • 62Norway
  • 63Oman
  • 64Pakistan
  • 65Palestine
  • 66Peru
  • 67Philippines
  • 68Poland
  • 69Portugal
  • 70Qatar
  • 71Romania
  • 72Russia
  • 73Saudi Arabia
  • 74Senegal
  • 75Serbia
  • 76Singapore
  • 77Slovakia
  • 78Slovenia
  • 79Somalia
  • 80South Africa
  • 81South Korea
  • 82Spain
  • 83Sri Lanka
  • 84Sudan
  • 85Sweden
  • 86Switzerland
  • 87Syria
  • 88Taiwan
  • 89Tanzania
  • 90Thailand
  • 91Tunisia
  • 92Türkiye
  • 93Uganda
  • 94United Arab Emirates
  • 95United Kingdom
  • 96United States
  • 97Uzbekistan
  • 98Vietnam
  • 99Yemen
  • 100Zambia

Names are standardized. Hong Kong and Macao are included under China; England and Scotland are included under the United Kingdom. Taiwan and Kosovo retain their separate entries in the supplied registration list.

192 Countries & territories accessing INPLASY

Website views by country or territory for 1 May 2020 – 16 September 2026. The analytics export records territories separately.

Country / territoryViewsShare*
China328,77635.11%
United States117,56412.56%
India43,9694.70%
United Kingdom35,7923.82%
Brazil33,1623.54%
Portugal28,0302.99%
Hong Kong SAR China25,0352.67%
Germany25,0202.67%
Taiwan23,3242.49%
Australia19,0892.04%
Canada18,3461.96%
Spain17,0391.82%
Malaysia15,4821.65%
Singapore12,1241.29%
Japan11,8761.27%
South Korea11,7821.26%
Italy10,8561.16%
Chile9,4351.01%
France8,0070.86%
Mexico7,8470.84%
Saudi Arabia6,9370.74%
Colombia6,8740.73%
Philippines6,7900.73%
Indonesia6,3890.68%
Belgium6,3290.68%
Thailand6,1170.65%
Ireland5,6480.60%
Netherlands5,2390.56%
Poland4,5740.49%
Peru4,4290.47%
Switzerland4,1580.44%
Israel4,0570.43%
Türkiye3,7050.40%
Sweden3,6540.39%
Romania3,3280.36%
Greece3,3090.35%
Nigeria3,2550.35%
Russia2,7930.30%
South Africa2,6110.28%
Finland2,4360.26%
Pakistan2,2010.24%
Egypt2,1440.23%
Ecuador2,0620.22%
Macao SAR China2,0060.21%
Morocco1,5270.16%
Austria1,4770.16%
Denmark1,4590.16%
Ghana1,4340.15%
Serbia1,3900.15%
Norway1,3700.15%
Kenya1,3210.14%
United Arab Emirates1,2430.13%
Hungary1,2170.13%
New Zealand1,1580.12%
Vietnam1,0290.11%
Czechia7890.08%
Bulgaria7370.08%
Ethiopia7180.08%
Bangladesh7110.08%
Argentina6440.07%
Jordan5960.06%
Bahrain5580.06%
Sri Lanka5400.06%
Uganda5380.06%
Kazakhstan5290.06%
Qatar5270.06%
Croatia5190.06%
Lithuania5180.06%
Latvia4080.04%
Slovenia3940.04%
Mozambique3930.04%
Iraq3760.04%
Lebanon3650.04%
Angola3550.04%
Ukraine3360.04%
Cyprus3260.03%
Luxembourg2880.03%
Tanzania2630.03%
Algeria2480.03%
Estonia2390.03%
Oman2270.02%
Tunisia2170.02%
Senegal1990.02%
Slovakia1910.02%
Iran1810.02%
Malta1760.02%
Malawi1720.02%
Bolivia1600.02%
Puerto Rico1590.02%
Libya1550.02%
Nepal1410.02%
Burkina Faso1410.02%
Palestinian Territories1380.01%
Yemen1300.01%
Albania1290.01%
Uruguay1280.01%
Montenegro1280.01%
Cameroon1280.01%
Venezuela1220.01%
Zimbabwe1170.01%
Benin1170.01%
Dominican Republic1110.01%
South Sudan1100.01%
Paraguay1090.01%
Costa Rica1070.01%
Iceland1060.01%
Cambodia970.01%
Moldova960.01%
Rwanda910.01%
Fiji900.01%
Kuwait890.01%
North Macedonia880.01%
Togo850.01%
Seychelles840.01%
Myanmar (Burma)780.01%
Bosnia & Herzegovina760.01%
Zambia720.01%
Congo - Kinshasa680.01%
Uzbekistan670.01%
Nicaragua630.01%
Cape Verde630.01%
Guatemala610.01%
Gambia590.01%
Panama580.01%
Mali550.01%
Gibraltar530.01%
Mauritius450.00%
El Salvador420.00%
Maldives420.00%
Botswana420.00%
Trinidad & Tobago410.00%
Somalia410.00%
Armenia400.00%
Georgia380.00%
Mongolia360.00%
Belarus330.00%
Honduras280.00%
Brunei270.00%
Jamaica230.00%
Côte d’Ivoire230.00%
Namibia200.00%
Laos200.00%
American Samoa200.00%
Andorra200.00%
Kyrgyzstan180.00%
Monaco170.00%
Cuba160.00%
Burundi160.00%
Afghanistan140.00%
Syria130.00%
Sudan130.00%
Niger130.00%
Liberia130.00%
Azerbaijan130.00%
Kosovo120.00%
Guyana120.00%
Congo - Brazzaville120.00%
Liechtenstein110.00%
St. Kitts & Nevis110.00%
Timor-Leste100.00%
Réunion100.00%
Tonga90.00%
Sierra Leone90.00%
Vanuatu80.00%
Bhutan80.00%
British Virgin Islands70.00%
Jersey70.00%
Gabon70.00%
Barbados70.00%
Bahamas60.00%
Belize50.00%
Martinique40.00%
Isle of Man40.00%
Grenada40.00%
Chad30.00%
Madagascar30.00%
Tajikistan20.00%
São Tomé & Príncipe20.00%
French Polynesia20.00%
Cayman Islands20.00%
Aruba20.00%
St. Vincent & Grenadines10.00%
Eswatini10.00%
Suriname10.00%
Papua New Guinea10.00%
Haiti10.00%
Guam10.00%
Equatorial Guinea10.00%
Guinea10.00%
Faroe Islands10.00%
Central African Republic10.00%
Antigua & Barbuda10.00%

*Share of the 936,355 views in the geographic export. A separate “European Union” entry (6 views) is included in that total but excluded from the country and territory list. The listed locations sum to 936,349 views. Percentages are rounded.

Our story

From a clear purpose
to a global community.

Launched in March 2020, INPLASY provides an international platform for registering evidence synthesis protocols, including systematic reviews and meta-analyses.

MARCH 2020

The beginning

INPLASY launches with a focus on transparent, accessible protocol registration.

FIRST 12 MONTHS

1,400+ protocols

Authors from 25 countries contribute records during the platform’s first year.

2023

A published analysis

A research article examines 4,658 registered protocols, platform features and website statistics.

SEPTEMBER 2026

100 countries

A milestone in international participation, with more than 9,700 protocols registered on the platform.

Making research easier to discover.

A public protocol helps researchers identify ongoing work, examine planned methods and track changes. Searching existing reviews and registrations remains an essential step before starting a new project.

Explore the protocol database

Part of the evidence synthesis landscape.

INPLASY was included among the resources for identifying ongoing reviews in McMaster University’s COVID-END guidance of June 2020. Our platform’s first three years were also examined in a published research article.

Read the 2023 platform analysis

Our values

The principles behind
every public record.

We combine a commitment to research transparency with an efficient administrative process and a registration target of under 48 hours.

Integrity & principles

Transparency is at the heart of a reliable research record.

Equality & respect

Submissions receive equal treatment, regardless of country or nationality.

Quality & discipline

Structured records and administrative checks support clear reporting.

Innovation & learning

We keep improving how researchers register and share their methods.

Commitment

We support researchers in making their planned methods publicly available.

Teamwork & inspiration

Shared expertise and collaboration strengthen our work.

People make this mission possible.Meet the team contributing to INPLASY’s work.

Meet our team

Be part of our global community

Make your next research
protocol a public record.

Join researchers around the world in making evidence synthesis methods visible from the start.

Get started
About these figures & references

Reporting period and definitions

Website analytics cover 1 May 2020 to 16 September 2026. The overview reports 937.1K website views and 248.6K visitors; these are rounded values. Visitors are an analytics measure and do not represent registered user accounts.

The geographic export contains 936,355 views across 193 location labels. Removing the regional “European Union” label from the location count yields 192 countries and territories. The overview and geographic export have different totals and are reported separately here.

The protocol registration list contains 100 standardized country entries. Website analytics retain the location names and territory categories supplied by the analytics platform, so these two geographic counts use different definitions. The “9,700+ registered protocols” milestone reflects the INPLASY homepage consulted on 16 September 2026.

Selected publications & references

  1. Canellas JVdS, Borges FCP. How should retrospectively registered protocols be interpreted in systematic reviews? Systematic Reviews. 2026;15:210. doi:10.1186/s13643-026-03278-8.
  2. Ferreira RT et al. What evidence syntheses reveal about PROSPERO, INPLASY, OSF, the Research Registry, and protocols.io: a meta-research study. Frontiers in Research Metrics and Analytics. 2026;11:1738112. doi:10.3389/frma.2026.1738112.
  3. Borges FCP et al. Contemporary practices in scoping review protocol registration: a meta-research analysis of high-impact health journals (2024–2025). BMC Medical Research Methodology. 2026;26:194. doi:10.1186/s12874-026-02919-9.
  4. Canellas et al. The international platform of registered systematic review and meta-analysis protocols (INPLASY) at 3 years: an analysis of 4,658 registered protocols on inplasy.com, platform features, and website statistics. Frontiers in Research Metrics and Analytics, 2023. Read article.
  5. Solla F, Bertoncelli CM, Rampal V. Does the PROSPERO registration prevent double review on the same topic? BMJ Evidence-Based Medicine, 2020. Read article.
  6. McMaster University. COVID-END resources for researchers. Guidance on identifying ongoing reviews and avoiding duplication, June 2020, section 2.2.2. View guidance (PDF).
INPLASY® · International Platform of Registered Systematic Review and Meta-analysis ProtocolsUpdated 16 September 2026