At a glance: 8 apps tested across 6 platforms, macOS, Windows, Linux, iOS, Android, web. Notion: 30M+ users, 5 native apps, $10/mo Personal Pro. Obsidian: 2,000+ plugins, native Linux, $8/mo Sync. OneNote: free, Mac + Windows + iOS + Android + web. Evernote: $14.99/mo, web clipper standard. Joplin: open source, end-to-end encryption optional. Atlas: $20/mo Pro, browser-native. Standard Notes: $90/yr, E2E encrypted. Logseq: free, block-based.
Cross-platform note-taking is harder than single-platform note-taking because most "cross-platform" apps are great on 2 platforms and mediocre on 3 others. Sync reliability, app feature parity, and platform-native UX all matter.
This guide ranks 8 apps based on actual cross-platform testing across macOS, Windows, Linux, iOS, Android, and web in 2026.
What Should You Look for in a Cross-Platform Note-Taking App?
For the deeper framework, Cognitive Load, Vendor Lock-in, and Knowledge-Graph Density, applied across eight leading second-brain apps, see our second-brain apps guide.
Five criteria.
Native apps on every platform you use. Web-only is a fallback, not a feature. The good cross-platform apps have native apps on at least 4 of: Mac, Windows, Linux, iOS, Android.
Sync reliability. Sync works fine 99% of the time and breaks at the worst moment. The best apps have version history, conflict resolution, and offline-first sync.
Feature parity across platforms. A great Mac app and a stripped-down iOS app is not real cross-platform. Look for the same features on every platform.
Export portability. If you ever switch apps, can your notes leave cleanly? Markdown export is the gold standard.
Pricing. Cross-platform sync is usually where free tiers stop. Compare paid sync ($8 Obsidian, $10 Notion) against free options (OneNote, Joplin, Apple Notes within Apple).
1. Notion: Best Cross-Platform Overall
Notion has the most polished cross-platform experience. Native apps on Mac, Windows, iOS, Android, plus a web app that's nearly as full-featured as the desktop apps. Sync is fast and reliable.
Best for. Most users who need notes that follow them everywhere. Pricing: Free tier, Personal Pro $10/month. Platforms: Mac, Windows, iOS, Android, web (no native Linux).
2. Obsidian: Best for Power Users and Linux
Obsidian stores notes as local markdown files in a folder you control. Native apps on Mac, Windows, Linux, iOS, Android. Sync via Obsidian Sync ($8/month), iCloud, Dropbox, Git, or any cloud folder.
Best for. Linux users, power users, and anyone who wants file ownership. Pricing: Free for personal use, $8/month Sync, $4/month Publish. Platforms: Mac, Windows, Linux, iOS, Android.
3. OneNote: Best Free Cross-Platform
Microsoft OneNote is free with a Microsoft account. Native apps on Mac, Windows, iOS, Android, plus a strong web app. Notebook → section → page hierarchy works well across devices.
Best for. Surface users, Windows users, and free cross-platform users. Pricing: Free with Microsoft account. Platforms: Mac, Windows, iOS, Android, web (no Linux).
4. Evernote: The Historical Cross-Platform Default
Evernote was the cross-platform notes app for a decade. The web clipper is still best-in-class. Pricing changes hurt its reputation, but the apps remain capable across Mac, Windows, iOS, Android, and web.
Best for. Heavy web clippers and existing Evernote users. Pricing: Free tier (1 device), Personal $14.99/month. Platforms: Mac, Windows, iOS, Android, web.
5. Joplin: Best Open-Source Cross-Platform
Joplin is fully open source and runs on Mac, Windows, Linux, iOS, and Android. Sync via Joplin Cloud ($2.99/mo), Dropbox, OneDrive, WebDAV, or S3, your choice. End-to-end encryption optional.
Best for. Open-source users and anyone who wants control over sync backend. Pricing: Free (Joplin Cloud $2.99/month optional). Platforms: Mac, Windows, Linux, iOS, Android.
6. Atlas: Best Web-First AI-Grounded Cross-Platform
Atlas runs in any browser, no install needed. Upload notes, PDFs, and articles; Atlas builds a mind map across them with source-cited AI Q&A. The web-first model means it works on any device with a browser.
Best for. AI-grounded note-taking across multiple devices without installing apps. Pricing: $20/mo Pro. Try Atlas Platforms: Web (works everywhere, Mac, Windows, Linux, iOS, Android browsers).
7. Standard Notes: Best Privacy-Focused Cross-Platform
Standard Notes is end-to-end encrypted by default. Native apps on Mac, Windows, Linux, iOS, Android, web. The free tier covers plain-text notes; paid tiers add markdown, rich text, themes, and editor extensions.
Best for. Users who want E2E encryption and cross-platform. Pricing: Free tier, Productivity $90/year. Platforms: Mac, Windows, Linux, iOS, Android, web.
8. Logseq: Best Cross-Platform Linked Notes
Logseq is the open-source block-based outliner. Native apps on Mac, Windows, Linux, iOS, Android. Bidirectional links, daily notes, and graph view, all stored as local markdown.
Best for. Researchers and power users who want linked notes with cross-platform support. Pricing: Free. Platforms: Mac, Windows, Linux, iOS, Android.
Comparison Table
| App | Mac | Windows | Linux | iOS | Android | Web | Free | Sync |
|---|---|---|---|---|---|---|---|---|
| Notion | Yes | Yes | Browser | Yes | Yes | Yes | Tier | Built-in |
| Obsidian | Yes | Yes | Yes | Yes | Yes | No | Yes | $8/mo |
| OneNote | Yes | Yes | No | Yes | Yes | Yes | Yes | Built-in |
| Evernote | Yes | Yes | No | Yes | Yes | Yes | 1 device | Built-in |
| Joplin | Yes | Yes | Yes | Yes | Yes | No | Yes | BYO backend |
| Atlas | Browser | Browser | Browser | Browser | Browser | Yes | Tier | Built-in |
| Standard Notes | Yes | Yes | Yes | Yes | Yes | Yes | Tier | Built-in (E2E) |
| Logseq | Yes | Yes | Yes | Yes | Yes | No | Yes | BYO backend |
Best Cross-Platform Note-Taking App by Use Case
Best overall. Notion, most reliable cross-platform sync. Best for Linux. Obsidian, Joplin, Standard Notes, or Logseq. Best free cross-platform. OneNote. Best for privacy. Standard Notes (E2E) or Joplin with E2E enabled. Best web-first. Atlas, no install, works in any browser. Best for power users. Obsidian. Best for Apple-only with cross-platform fallback. Apple Notes plus a web export workflow. Best open-source. Joplin or Logseq.
Cross-Platform Pitfalls to Avoid
Apple-only apps. Apple Notes, Bear, and Craft are excellent on Mac and iOS but useless on Windows and Android. Don't pick these if you cross ecosystems.
Web-only with poor offline. Some "cross-platform" apps are just web apps. They die without internet and feel slow on phones. Atlas works because the web app is fast and PDF synthesis is the workflow.
Different feature sets per platform. Some apps have advanced features on desktop and stripped-down mobile apps. Test the mobile app before committing.
Unreliable sync. Cheap or amateur apps lose notes during sync conflicts. Stick to apps with version history (Notion, Obsidian, Evernote, OneNote).
Sync Reliability and Conflict Resolution
Cross-platform tools live or die on the sync engine. Three patterns dominate.
Operational-transform sync (real-time). Notion and Google Keep use server-authoritative real-time sync. Conflicts resolve in seconds; multi-device editing is fluid. The downside is that the server is the source of truth, which means a vendor outage is a working outage.
File-based sync via cloud storage. Obsidian (over iCloud, Dropbox, OneDrive, or Obsidian Sync), Logseq, and Joplin sync the underlying Markdown files. The user owns the source of truth on disk. The risk is conflict files (note (conflicted copy).md) that the user must merge by hand when two devices edit the same note offline.
End-to-end encrypted sync with conflict awareness. Standard Notes and Obsidian Sync resolve conflicts client-side and surface conflict markers explicitly. Strongest privacy posture; small UX overhead during conflict resolution.
For multi-device users with high write velocity, server-authoritative sync (Notion) is the most invisible. For users who prioritize data ownership, file-based sync (Obsidian, Joplin) is the only acceptable option. Test the conflict path before committing: edit the same note on two devices offline, then bring both online and see what the tool does.
Privacy and Encryption Across Platforms
Server-authoritative tools. Notion, Google Keep, and OneNote run their AI features in the cloud. Notion publishes a SOC 2 Type II report on the Notion Trust Center and an opt-out for foundation-model training. OneNote inherits Microsoft 365's enterprise governance. Google Keep ties to the Google account's privacy posture; commercial Workspace tenants get DLP and retention controls.
Local-first tools. Obsidian, Joplin, Standard Notes, and Logseq keep the canonical copy on the user's disk. Standard Notes is the only one in this comparison with end-to-end encryption by default; Obsidian Sync adds opt-in E2E encryption.
Atlas. TLS in transit, AES-256 at rest. Vendor SOC 2 Type II in progress at the time of writing. Uploads not used to train third-party foundation models.
For regulated industries, OneNote on Microsoft 365 Business or Enterprise is the only option here that ships DLP and eDiscovery. For maximum personal privacy, Standard Notes is the strongest choice.
Offline Capability
Best offline. Obsidian, Joplin, Logseq, Standard Notes. All four work fully offline because the canonical copy is local; sync is a separate concern.
Cached offline. Notion (selective offline cache, expanded in 2024), OneNote (full desktop offline, mobile selective), Evernote Personal and higher.
Online-required. Atlas AI Q&A (cached PDFs render offline; the AI layer needs a server). Google Keep on the web; the mobile clients cache recent notes.
For users who travel without reliable connectivity, the local-first tools are the safest default. For users who live in coffee shops with Wi-Fi, the cached-offline tools are usually sufficient.
Pricing Across Tiers
| Tool | Free Tier | Personal Paid | Annual Cost (Paid) | Notes |
|---|---|---|---|---|
| Notion | Generous | Plus $10/mo | $120 | AI add-on $10/mo |
| Obsidian | Full | Sync $4/mo | $48 | $50/yr commercial |
| Joplin | Full | Cloud $3/mo | $36 | Self-hosted free |
| Standard Notes | Limited | Pro $9/mo | $108 | E2E by default |
| OneNote | Free w/ MS account | Bundled with M365 | $99-$130 | Copilot $20/mo |
| Logseq | Full | Sync $5/mo | $60 | Open source |
| Evernote | Light | Personal | $130-$180 | Pro $170-$216 |
| Atlas | Yes | Pro $20/mo | $240 | AI synthesis |
For pure cross-platform cost minimization, OneNote on a Microsoft 365 Family plan ($129.99/year shared with up to six users) is the cheapest per-seat option. For Linux compatibility, Obsidian Sync at $48/year is the strongest value.
Vendor Risk and Long-Term Stability
Lowest risk. Obsidian, Joplin, Logseq, Standard Notes. All store the canonical copy in plain text on the user's disk. The editors could shut down tomorrow and the user's vault remains usable.
Moderate risk. Notion, OneNote, Evernote. Backed by larger companies with stable funding, but the data lives in proprietary formats; export tools exist but lossy round-trips are possible.
Lower risk by company size. Microsoft (OneNote) is the largest vendor in this comparison. Notion is well-funded with a public roadmap. Evernote stabilized after the 2023 acquisition.
Younger vendor. Atlas; quarterly Markdown export is the recommended hedge.
The pragmatic rule across all tools: keep a periodic export of important notes outside the vendor's ecosystem regardless of platform.
Final Take
The best cross-platform note-taking app depends on your platform mix. All ecosystems including Linux: Obsidian, Joplin, Standard Notes, or Logseq. Mac/Windows/mobile (no Linux): Notion or OneNote. Free: OneNote or Joplin. Web-first AI-grounded: Atlas. Privacy: Standard Notes. The right pick is the one that runs natively on every device you use without compromise.
