Most "best note-taking app" lists compare editors. But research reading on the web is a four-stage pipeline, and no single application is good at all four:

1. Capture — get the sentence out of the page with its source intact.
2. Organise — put it somewhere you can find it again.
3. Retrieve — search, link, and resurface it while you write.
4. Retain — turn what you read into something you remember.

Tools fail when they claim all four and do two badly. The workable setup picks one tool per stage and makes the handoff between them explicit.

Stage 1 — Capture: WuCai Highlight

The capture layer lives in the browser because that is where reading happens. Select text, keep the quote, add your own note, tag it, and keep the page position so you can return to the paragraph.

What matters here is what the tool stores: the quoted text, the source URL, the annotation, the colour, and a link back to the exact paragraph. A capture tool that omits the URL has produced a quotation with no provenance — the most common failure in personal archives.

WuCai also handles clipping (full article into your notes) and page screenshots when text will not do. Its own limit is format: web pages, not PDFs.

Best for: the capture stage of any web-based reading workflow.

Stage 2 — Organise: Obsidian, Logseq or SiYuan

Your vault is where structure happens. Obsidian's local Markdown files, two-way links and graph view are the reason it dominates this stage; Logseq's outliner and daily notes suit a different thinking style; SiYuan keeps a block-level database over local files.

The handoff is the part people skip. WuCai ships official plugins for all three that write one note per page with template variables — title, URL, domain, tags, the highlight list and your annotations in separate fields, plus the clipped full text if you include it. A walkthrough for the most common case is in syncing highlights to Obsidian.

Best for: everything that is yours — the argument you are building, not the quote you collected.

Stage 3 — Retrieve: Notion (or your vault's search)

Notion earns its place when the unit is a project rather than a note: a database of sources with status fields, a table of claims with links, something a collaborator can also open. Its clipper sends pages in, and the database view is genuinely better than a folder tree for tracking what you have read.

The cost is that Notion is a database you visit, not a surface you read on. Keep the reading in the browser and the management in Notion; do not try to make Notion the capture layer.

Best for: source tracking, shared reading lists and anything with a deadline and a collaborator.

Stage 4 — Retain and cite: Anki, Zotero, MarginNote

• Anki — spaced repetition. If the goal is knowing something, flashcards beat re-reading; the work is in writing the cards, not in the app.
• Zotero — citations and bibliographies. Non-negotiable for academic writing; its connector grabs metadata that no highlighter can reconstruct later.
• MarginNote — PDF study with mind maps and outline extraction. The best fit when a single book is the object of study rather than a stream of articles.

Best for: the stage everyone skips, and the one that determines whether the archive was worth building.

A setup that works

Stage	Tool	Why
Capture	WuCai Highlight	Quote + source + position, in the browser
Organise	Obsidian / Logseq / SiYuan	Local Markdown, links, no lock-in
Retrieve	Vault search, plus Notion for projects	Fast recall, shared when needed
Retain	Anki	Only for what you must actually know
Cite	Zotero	Metadata you cannot recover later

Three tools, one handoff each, and every handoff is a file you could read with a text editor. That last property is what makes a setup survive a vendor changing its pricing.

What to avoid

• Two capture tools. Highlights split across two apps are highlights you will search for twice and find once.
• A clipper as your archive. Clipped pages without annotations are a landfill.
• Folders instead of tags, or tags instead of folders. Past a few hundred items you need both; a tool that offers only one will hurt eventually.
• Saving without a URL. Check the export before you trust it.

FAQ

What is the best tool for taking notes while reading online? The capture layer should be a browser highlighter: select text, keep the quote with its source. WuCai Highlight does that and syncs to the vault apps above.

Do I need Obsidian if I already use a highlighter? Only if you want your notes in Markdown you control. A highlighter stores quotes; a vault stores your thinking around them.

How many tools is too many? More than three. Split by stage, and make each handoff a file format you could read without the app.

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Related: Best web highlighting tools · Sync highlights to Obsidian · Five ways to save a web page · Sync and export options