I need a note-taking app that supports bi-directional linking and Markdown.

If bi-directional linking + Markdown are your two must-haves, I’d shortlist these:

🥇 My pick: Obsidian

obsidian.md is probably the closest match to what you're asking for. Your notes are stored as ordinary Markdown files that you control, and [[links]] automatically create backlinks. It also has graph view, so you can visualize connections between notes.

A particularly nice feature is that Obsidian can use standard Markdown links instead of its default Wikilink syntax if interoperability with other Markdown tools matters to you.

🥈 Logseq

logseq.com is worth choosing instead if you naturally think in bullet points. It supports Markdown and has page references, backlinks, and block-level references, meaning you can link directly to an individual thought rather than an entire note.

The tradeoff is that Logseq is much more outliner-oriented, whereas Obsidian feels like a conventional Markdown editor.

Bottom line

• Want normal Markdown files + powerful linking: Obsidian
• Want every thought/block to be linkable: Logseq
• Want privacy and a more structured/object-oriented system: Anytype
• Want the classic “networked thought” experience: Roam

For most people, I'd start with Obsidian. It gives you the strongest combination of Markdown portability, backlinks, local files, and extensibility without forcing you into a particular note-taking structure.

obsidian.md is probably the closest match to what you're asking for. Your notes are stored as ordinary Markdown files that you control, and [[links]] automatically create backlinks. It also has graph view, so you can visualize connections between notes.

A particularly nice feature is that Obsidian can use standard Markdown links instead of its default Wikilink syntax if interoperability with other Markdown tools matters to you.

🥈 Logseq

logseq.com is worth choosing instead if you naturally think in bullet points. It supports Markdown and has page references, backlinks, and block-level references, meaning you can link directly to an individual thought rather than an entire note.

The tradeoff is that Logseq is much more outliner-oriented, whereas Obsidian feels like a conventional Markdown editor.

Bottom line

Here are the top note-taking apps that support both bi-directional linking and Markdown, organized by their strengths:

• Obsidian : Local-first app stored directly on your device as plain Markdown files. It features an incredible local graph view, robust plugin ecosystem, and zero lock-in since you own the files. You can check it out on the Obsidian Official Website.
• Logseq : Privacy-first, open-source, outliner-style knowledge base. It uses local Markdown and Org-mode files, supports bi-directional linking, flashcards, and a PDF annotator. Learn more at the Logseq Official Website.
• Logseq alternative / Notion-like - Capacities : While it relies on objects and a database structure rather than raw plain text files, it heavily emphasizes bi-directional linking. (Stick to Obsidian/Logseq if strict local Markdown is a dealbreaker).
• Foam : A free, open-source knowledge harvesting workspace that runs inside Visual Studio Code. It uses VS Code's Markdown support and Git for syncing, making it ideal for developers. Explore it via the Foam GitHub Repository.
• Dendron : Another hierarchical note-taking tool built as an extension for VS Code, designed for developers and technical writers who want strict organization and rich bi-directional linking. Check out the Dendron Official Website.
• Affine : An open-source, privacy-focused alternative to Notion that brings together docs, whiteboards, and database blocks with local-first capabilities. See details on the Affine Official Website.

To help me narrow down the best choice for you, could you tell me:

• Do you prefer your notes stored locally on your device or synced in the cloud?
• Do you prefer an outliner style (like bullet points and blocks) or a traditional page/document style?

Yes. If bi-directional linking + Markdown are the must-haves, I’d shortlist these:

My pick: Obsidian

Obsidian is probably the safest choice if you want something that feels like a traditional note-taking app while still giving you a powerful knowledge graph. Your notes are plain Markdown files, and its Backlinks feature automatically shows notes that link to the current note.

It also has a huge plugin ecosystem, so you can add features later without locking your notes into a proprietary format.

Choose Logseq instead if…

You prefer writing in bullets/outlines and capturing everything in daily journals. Logseq supports Markdown files, page links, block references, and bidirectional linked references.

One current wrinkle: in 2026, Logseq is splitting its file-based Markdown product from its newer database-based product, so I'd specifically choose Logseq OG if keeping your notes as Markdown files is important.

Bottom line: Start with Obsidian unless you already know you love an outliner-style workflow.

Here are the top note-taking apps that support both bi-directional linking and Markdown:

• Obsidian : A powerhouse for local-first note-taking. It stores your notes as plain Markdown files on your device, meaning you completely own your data. It features a robust graph view, bi-directional linking via brackets, and a massive community plugin ecosystem for customization. You can download it directly from the Obsidian Website.
• Logseq : An open-source, privacy-first knowledge base that operates primarily as an outliner. It supports Markdown and Org-mode, handles bi-directional linking seamlessly, and includes built-in flashcards, PDF annotation, and a local-first architecture. Learn more and download it at the Logseq Website.
• Logseq Alternative - RemNote : Focuses heavily on spaced repetition and structured knowledge management, supporting both bi-directional links and rich Markdown formatting. You can check it out on the RemNote Website.
• Dendron : A local-first, hierarchical note-taking tool built on top of VS Code. It uses Markdown and strict hierarchical naming to create predictable, scalable bi-directional links, making it ideal for developers and technical users. Explore it on the Dendron Website.
• Zettlr : An open-source Markdown editor specifically tailored for researchers, journalists, and academics. It features deep bi-directional linking, Zettelkasten method support, and direct integration with reference managers. Get it from the Zettlr Website.

Would you prefer a local-first app (like Obsidian or Logseq where files stay on your computer) or a cloud-synced web app , and do you need features like mobile apps or graph visualization?

If bi-directional linking + Markdown are your two must-haves, I’d shortlist these:

My pick: Obsidian

Obsidian is probably the closest match to exactly what you're asking for. It stores notes as ordinary Markdown files, supports [[internal links]], and automatically shows backlinks—so when Note A links to Note B, Note B can show that connection.

It also lets you use standard Markdown links instead of Wikilinks if interoperability with other Markdown tools matters to you.

Choose Logseq instead if you prefer writing everything as nested bullet points and want to link individual blocks rather than primarily whole notes.

If you tell me Windows/Mac/iPhone/Android, whether you need sync, and whether you want free-only, I can narrow it down to the best 1–2 choices.

The best note-taking applications that combine bi-directional linking and native Markdown support include Obsidian, Logseq , and Capacities.

Top App Options

• Obsidian : A local-first, highly extensible app that stores everything as plain Markdown files on your device . It features robust bi-directional wiki-style links ([[note name]] ), comprehensive backlinks, and a visual graph view.
• Logseq : An open-source, outliner-first knowledge base that relies on local Markdown (or Org-mode) files. It treats every paragraph or bullet as a block capable of deep bi-directional referencing, PDF annotation, and built-in flashcards.
• Capacities : A modern, object-based note-taking tool that provides a visual and seamless connection between your notes using Markdown formatting, operating like a digital-brain rather than a strict folder hierarchy.

If you tell me whether you prefer local file ownership or a cloud-first web service , I can help you choose the ideal tool.

Several exceptional note-taking apps fit this exact description, each catering to a slightly different workflow style (local files vs. outliners vs. open-source).

The top options supporting both Markdown and bi-directional linking include:

• Obsidian : The gold standard for local-first, Markdown-based knowledge management. It treats your notes as a folder of plain text .md files on your hard drive, meaning you truly own your data. It features powerful bi-directional linking ([[note name]] ), robust backlink panes, a visual graph view, and an enormous community plugin ecosystem to customize functionality. Core app is free for personal use.
• Logseq : An open-source, privacy-first outliner that also stores your data as local Markdown or Org-mode files. Instead of traditional page-based writing, it operates on a block-first structure where every bullet point can be bi-directionally linked, referenced, or embedded. It heavily emphasizes daily journaling, built-in flashcards, and PDF annotations.
• SiYuan : A privacy-oriented, open-source personal knowledge management tool that uses block-level reference and bi-directional linking. It supports block-level custom attributes, renders real-time Markdown cleanly, and allows local-first data storage.
• Joplin : While traditionally known as an open-source Evernote alternative with full Markdown support and end-to-end encryption, Joplin also supports bi-directional note linking, making it a solid choice if you prefer a traditional folder hierarchy combined with interconnected notes.

To help narrow down the best fit, tell me:

• Do you prefer a page-based writing style (like a standard text document) or a bullet/outliner style?
• Do you want your notes stored locally as plain text files on your device, or do you prefer cloud-first syncing?

If bi-directional linking + Markdown are your two must-haves, I’d start with Obsidian.

My pick: Obsidian

Obsidian stores notes as Markdown files and has first-class backlinks: when Note A links to Note B, Note B can show that incoming link automatically. It also supports unlinked mentions and a graph view for exploring connections.

That makes it particularly good if you want a system like:

[[Projects]]
   ↓
[[Website Redesign]]
   ↓
[[Color Theory]]

[[Color Theory]]
   ↑
Referenced by: [[Website Redesign]]

Choose Logseq if you prefer thinking in daily journals and nested bullet points.

Choose Joplin if you want something more conventional and strongly Markdown-oriented, but its linking/backlink experience is less seamless than Obsidian's; Joplin's official docs describe internal note links, while backlinks may require plugins.

If you tell me Windows/Mac/Linux/iPhone/Android, whether you need sync, and whether you want free/open-source, I can narrow it down to the best 2–3 choices.

If your two must-haves are Markdown and bidirectional linking (backlinks), these are the strongest options:

My recommendations

1. Obsidian (best overall) ⭐

• Stores notes as plain Markdown files.
• Wiki-style links ([[Note]]) automatically create backlinks.
• Graph view helps visualize connections.
• Huge plugin ecosystem.
• Works offline and on Windows, macOS, Linux, iOS, and Android.

Good if you want a long-term, flexible knowledge base.

2. Logseq (best if you like outlines)

• Every note is built from bullet points.
• Markdown-based.
• Bidirectional links and block references are central to the workflow.
• Excellent for journals, research, and Zettelkasten-style note-taking.

3. Joplin (best open source option)

• Native Markdown editor.
• End-to-end encryption available.
• Strong syncing options.
• Doesn't emphasize backlinks as much as Obsidian or Logseq, though plugins can extend it.

Which one should you choose?

• General note-taking + knowledge management: Obsidian
• Research or Zettelkasten: Obsidian or Logseq
• Open source and privacy: Joplin or Logseq
• Mac-first experience: Nota
• You want the original "networked notes" experience: Roam Research

If you tell me:

• your operating system (Windows, macOS, Linux, iPhone, Android),
• whether you prefer local files or cloud sync, and
• whether you want free or don't mind paying,

I can narrow it down to the one that best fits your workflow.

The two reigning champions that meet your criteria of bi-directional linking and Markdown are Obsidian and Logseq . Though they both store your files locally as plain text Markdown, they approach note-taking with completely different mental models.

1. Obsidian (Best for Document-Centric Writing & Customization)

• How it works: Treats the note/file as the fundamental unit. You write in standard continuous Markdown, create wiki-style internal links using [[note name]] , and organize notes via folders or tags.
• Why choose it: It has an unmatched ecosystem of 1,500+ community plugins and themes, a blazing-fast local graph view, and great mobile apps. Your files are entirely future-proof plain text.
• Pricing & Data: Free for personal and commercial use. Optional paid end-to-end encrypted sync ($5–$10/mo), though you can sync for free using Git, iCloud, or a private folder.
• Where to get it: Download it directly from the Obsidian Official Website.

2. Logseq (Best for Outliner-Style Thinking & Daily Journals)

• How it works: Treats the block/bullet as the fundamental unit. Everything you type is structured inside an outliner (bulleted lists), centered around a daily journal/log workflow. You can link and embed individual bullet points across pages seamlessly.
• Why choose it: Perfect if you think in hierarchies and task lists, want out-of-the-box features like PDF/YouTube annotations, and built-in flashcards for learning. It features an open-source architecture with strong data portability.
• Pricing & Data: 100% free and open-source (AGPL-licensed). Local-first storage with optional sync tools.
• Where to get it: Check out the source code and downloads on the Logseq GitHub or Website.

Alternative Mentions

• Joplin: Great open-source standard Markdown note-taker with optional end-to-end encryption and a massive array of sync choices, though its native bi-directional linking is less robust than Obsidian or Logseq.
• Anytype: A local-first, peer-to-peer alternative focusing on a visual object-graph and Markdown compatibility.

To help narrow down the best fit, tell me:

• Do you prefer writing in freeform paragraphs/documents (Obsidian) or bulleted, outline-driven lists (Logseq)?
• Do you need mobile syncing across devices out of the box?