Most of our library databases have options to create your own account within their platform (e.g. EBSCO, ProQuest, Google Scholar) to save and organize sources. However, these don't work to save sources from multiple platforms.
To organize sources you find from different platforms, there are stand-alone options called citation management software. If you have an in-depth project, it might be worth your time to learn one of these tools. Most have the ability to:
Popular citation management software options include:
Some researchers prefer organizing with other technologies; spreadsheets, folders, or other techniques.