Different strengths
Obsidian is outstanding for networked Markdown, plugins, and local-first note graphs.
Shelf is outstanding when most of your corpus is PDFs and class notes you need to read, highlight, ask an LLM about, and quiz from.
PDFs without plugin fatigue
Shelf’s reader, highlights, tabs, and split view are built-in. You do not need a plugin stack to annotate a coaching PDF and ask a follow-up question on the selection.
LLM grounded in the library
Tutor retrieves from indexed Shelf pages with citations and scope filters. Many Obsidian AI plugins chat with notes; fewer deliver a full library + quiz + planner product around that chat.
Basic Structure doctrine limits Parliament's power to amend the Constitution beyond its core identity.
Kesavananda Bharati (1973) established that certain features cannot be destroyed by amendment.
Explain this highlight
When Obsidian is better
Prefer Obsidian if your primary artifacts are Markdown evergreen notes, you love local files and plugins, and PDFs are occasional attachments.
When Shelf is better
Prefer Shelf if you searched for an Obsidian alternative for students that includes PDFs, ask-an-LLM, quizzes, and a calendar — or you want Notion + NotebookLM + notes without maintaining the glue.
Using both
Some learners keep evergreen notes in Obsidian and exam PDFs in Shelf. Others move the whole study loop into Shelf’s all-in-one workspace. See /features/all-in-one-study-workspace.
Basic Structure doctrine limits Parliament's power to amend the Constitution beyond its core identity.
Kesavananda Bharati (1973) established that certain features cannot be destroyed by amendment.
Explain this highlight