Having had only a short view on MdSilo I'm not able to distinguish all similarities or differences. Logseq is clearly defined as an outliner (every block is a bullet point) but all the other features look pretty similar.
Especially that Logseq as well as MdSilo are living in (chromium-alike) browsers working on local files (accessible as plain text) is a feature which I can't underline enough as this allows to use your notetaking environment idependently of user privileges.
Is anybody able to add something for a contrasting juxtaposition? With now 1000+ pages generated during heavy usage of Logseq during the last weeks it is unlikely for me to switch but might be helpful for other users.
Indirect Mentions seem to be worth a closer look. Do we see this feature in Logseq as well?