Bibliographic managers (reference managers)

EndNote
EndNote is a commercial reference management software package from Clarivate, used to manage bibliographies and references when writing essays, reports and articles. 

The online version is free:  https://www.myendnoteweb.com/

It can be accessed from your personal account when logging in to the portal:  https://www.webofscience.com

  How to use the EndNote online tool to create bibliographic references? (step-by-step instructions) https://repository.kpi.kharkov.ua/handle/KhPI-Press/63985
  «EndNote: designing an article’s bibliography according to journal format» training video in Ukrainian from Clarivate https://youtu.be/-XrPhNsat1k
Mendeley A free bibliography manager from Elsevier to help a researcher store, organize, annotate, share, and cite references and research data. Logging-in with a single login and password for all Elsevier products. Available both online and as an add-in. https://www.mendeley.com/
Zotero A free, easy-to-use tool to help you collect, organize, cite, and share research sources. Available both online and as a browser extension or an application. https://www.zotero.org/
Grafiati Online service for automatic registration of bibliographic references and creation of lists of used sources. Both registered and unregistered users can use the service. The basic list of functions is available to users free of charge. The full functionality of the site is available by subscription. https://www.grafiati.com/
ONAFT4Ref Manager ONAFT4Ref Manager - is an online service for automated registration of bibliographic references and bibiliographic descriptions. Registration only according to the standard DSTU 8302:2015 https://4ref.ontu.edu.ua/