ResearchRabbit
ResearchRabbit helps you discover papers by building your own citation network. Just start by using one or more seed papers. On this basis it will find more papers relevant to your topic of interest. The tool also boosts your literature search while you are not actively using it. ResearchRabbit says it works as a Spotify for Papers. By adding papers to your collection, ResearchRabbit learns what you are interested in and improves its recommendations.
ResearchRabbit also includes helpful functions like adding labels to the entries in your network, downloading PDFs of papers and receiving alerts for new papers related to your research topic. It also helps with literature management and enables collaboration with other researchers.