University of Concepción

Visit Publisher homepage Visit journal homepage

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Allied Business Academies

Visit Publisher homepage Visit journal homepage

Business and International Management Strategy and Management

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: University of New Brunswick

Visit Publisher homepage Visit journal homepage

History

A journal of regional history devoted to the study of Atlantic Canada. The essential source for reading and research on the region, Acadiensis is one of Canada's leading scholarly journals.

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Tyumen State University

Insect Science

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Acarologia

Visit Publisher homepage Visit journal homepage

Insect Science

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Tübitak Dergi Park

Visit Publisher homepage Visit journal homepage

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Universidad Católica Santo Toribio de Mogrovejo

Visit Publisher homepage Visit journal homepage

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Belgrade Center for Music and Dance

Visit journal homepage View author guidelines View aims and scope

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Universidad Complutense de Madrid

Visit Publisher homepage Visit journal homepage

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Microbiology Society

Visit Publisher homepage Visit journal homepage

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Institutional Agreement

El acuerdo de Publicar & Leer de UdeC con la Microbiology Society permite a los autores correspondientes afiliados a UdeC publicar en acceso abierto en esta revista sin costo de publicación (APC). El acuerdo está vigente del 1-4-2025 al 30-04-2026.

Go to Journal

Publisher: VD Dakor

Visit journal homepage View author guidelines View aims and scope

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Elsevier

Visit Publisher homepage Visit journal homepage

Safety, Risk, Reliability and Quality Public Health, Environmental and Occupational Health Social Sciences(all)Human Factors and Ergonomics Law Transportation

Accident Analysis & Prevention provides wide coverage of the general areas relating to accidental injury and damage, including the pre-injury and immediate post-injury phases. Published papers deal with medical, legal, economic, educational, behavioral, theoretical or empirical aspects of transportation accidents, as well as with accidents at other sites. Selected topics within the scope of the Journal may include: studies of human, environmental and vehicular factors influencing the occurrence, type and severity of accidents and injury; the design, implementation and evaluation of countermeasures; biomechanics of impact and human tolerance limits to injury; modelling and statistical analysis of accident data; policy, planning and decision-making in safety.Benefits to authorsWe also provide many author benefits, such as free PDFs, a liberal copyright policy, special discounts on Elsevier publications and much more. Please click here for more information on our author services.Please see our Guide for Authors for information on article submission. If you require any further information or help, please visit our support pages: http://support.elsevier.com

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Elsevier

Visit Publisher homepage Visit journal homepage

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: University of Zaragoza

Visit Publisher homepage Visit journal homepage View author guidelines View aims and scope

Social Sciences(all)

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Universidad de Ciencias de la Cultura Física y el Deporte “Manuel Fajardo”

Visit Publisher homepage Visit journal homepage View author guidelines View aims and scope

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Asociacion Científico Cultural en Actividad Física y Deportes

Visit journal homepage View author guidelines View aims and scope

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Universidad Nacional de Educación a Distancia (UNED)

Visit Publisher homepage Visit journal homepage View author guidelines View aims and scope

Psychology(all)

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Routledge

Visit Publisher homepage Visit journal homepage

Medicine(all)Education Library and Information Sciences

Accountability in Research: Policies and Quality Assurance is devoted to the examination and critical analysis of systems for maximizing integrity in the conduct of research. It provides an interdisciplinary, international forum for the development of ethics, procedures, standards policies, and concepts to encourage the ethical conduct of research and to enhance the validity of research results. The journal welcomes divergent views on topics related to the integrity of research from scientists as well as from those in the fields of law, medicine, economics, statistics, management studies, public policy, politics, sociology, history, psychology, philosophy, ethics, and information science. All submitted manuscripts are subject to initial appraisal by the Editor, and if found suitable for further consideration, to peer review by independent, anonymous expert referees. All peer review is single blind and submission is online via ScholarOne Manuscripts.

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Publisher: Growing Science

Visit journal homepage View author guidelines View aims and scope

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Publisher: Wiley

Visit Publisher homepage Visit journal homepage View author guidelines View aims and scope

Accounting & Finance enjoys an excellent reputation as an academic journal that publishes articles addressing significant research questions from a broad range of perspectives. The journal:

publishes significant contributions to the accounting, finance, business information systems and related disciplines;
develops, tests, or advances accounting, finance and information systems theory, research and practice;
publishes theoretical, empirical and experimental papers that significantly contribute to the disciplines of accounting and finance;
publishes articles using a wide range of research methods including statistical analysis, analytical work, case studies, qualitative research, field research and historical analysis; and
applies economic, organizational and other theories to accounting and finance phenomena and publishes occasional special issues on themes such as on research methods in management accounting.

Accounting & Finance is essential reading for academics, graduate students and all those interested in research in accounting and finance. The journal is also widely read by practitioners in accounting, corporate finance, investments, and merchant and investment banking.

Keywords

Accounting, Finance, Auditing, Managerial accounting, Derivatives, Financial accounting, Corporate finance, Investments, Portfolio management, Qualitative, Environmental, Corporate governance, Market microstructure, Capital markets, Valuation, Banking

Loading data ...

Compliant Options - Provided by Journal Checker Tool

Hybrid Journal

Go ahead and submit. Remember to select a CC BY licence to ensure compliance.

Transformative Agreement

Select the open access publishing option with a https://creativecommons.org/licenses/by/2.0/ license to ensure compliance.

Transformative Journal

Select the open access publishing option with a CC BY license to ensure compliance.

Full Open Access

Go ahead and submit. Remember to select a CC BY license to ensure compliance.

Self-Archiving

Following acceptance, please deposit your author accepted manuscript in a repository without embargo.

Self-Archiving using Rights Retention

Your funder’s grant conditions set out how you can retain sufficient rights to self-archive the Author Accepted Manuscript in any OA repository. Publishing fees do not apply with this route.

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Unknown

Go to Journal

Buscador de Revistas

Following fields are empty!

Request Journal

Academy of Marketing Studies Journal

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

Academy of Strategic Management Journal

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

Acadiensis: Journal of the History of the Atlantic Region

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

Acarina

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

Acarologia

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

Acarological Studies

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

Acc Cietna: Para el cuidado de la salud

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

Accelerando: BJMD

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

List Price

Accesos. Revista de investigación artística

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

Access Microbiology

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

Institutional Agreement

Access to Justice in Eastern Europe

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

List Price

Accident Analysis & Prevention

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

List Price

List Price

List Price

List Price

Accident and Emergency Nursing

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

Acciones e Investigaciones Sociales

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

List Price

Acción

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool

List Price

Acción Motriz.com

Compliant Options - Provided by Journal Checker Tool

Unfortunately, this journal has no Plan-S compliant options - Provided by Journal Checker Tool