The article databases listed below are excellent resources for locating scholarship. Some just contain descriptions of the articles, whereas others include the full text of each article. You may want to search more than one to be most comprehensive.
Subject-Specific
The databases below focus on a particular field or discipline:
Interdisciplinary
The databases below allow you to search across multiple disciplines:
The links below will take you to databases that feature newspapers. The articles that appear in these databases will not be formatted as nicely as what you're likely used to on an app, their interfaces usually make it possible to do more sophisticated searching (they are designed for researchers, not casual readers). Many more are listed on the Newspaper Research Guide (including links to newspapers you can access directly).
The links below will take you to lists of other research tools that might be useful. For a list of other tools (listed by subject), please see the Research Guides page.