Notion alternatives that respect your privacy (2026)

Quick Answer. The strongest privacy-first Notion alternatives in 2026 are Standard Notes (E2EE by default, FOSS, mature), Anytype (peer-to-peer sync, end-to-end encrypted, no central server), Filarr (per-file AES-256-GCM, local-first workspace), and Logseq (FOSS, local Markdown). Obsidian and AppFlowy are local-first but require setup for full encryption. Each fits a different threat model.

Notion stores everything on its servers, holds the encryption keys, and is increasingly using customer data for AI features. If your threat model includes any of: data breach, subpoena, vendor shutdown, or AI training on your private notes — Notion's "encryption at rest" doesn't help. The keys are theirs.

This article surveys the credible privacy-first alternatives in 2026, explains what to look for cryptographically, who wins on which dimension, and how to migrate.

What makes a notes app "privacy-first"?

Four properties matter, and they're independent of each other.

1. End-to-end encryption (E2EE). Your data is encrypted on your device with a key the service does not have. The server stores ciphertext only — even a malicious admin or a subpoena cannot decrypt it. When applied to storage rather than communication, this is also called zero-knowledge encryption. The two terms overlap but aren't synonyms — see end-to-end vs zero-knowledge encryption for the distinction.

2. Local-first. The primary copy of your data lives on your disk, not on the provider's servers. You can read, search, and edit your notes with no network. The cloud, if there is one, is a synchronization channel — not the source of truth. See what is local-first software for the full definition.

3. Open source. Cryptographic claims are only verifiable when the code is auditable. The OWASP "Open Design" principle applies: security should not depend on hiding implementation details. Apps under FOSS, BSL, or similar source-available licenses let security researchers verify the encryption is implemented correctly.

4. No tracking, no AI ingestion. The privacy model breaks if the app phones home, runs analytics, or feeds your notes into an AI training pipeline. Default-off telemetry is the bare minimum.

Apps that hit all four are rare. Most pick two or three.

Which Notion alternatives are encrypted by default?

Encryption claims vary widely. Some apps encrypt by default, others require setup, and the cryptographic choices differ.

Obsidian

Obsidian stores notes as plain Markdown on your local disk — they are not encrypted at rest by default. For sync between devices, Obsidian's official Sync service uses E2EE with AES-256 (scrypt-derived keys). E2EE has to be enabled when creating the remote vault; it isn't on by default. Obsidian Sync also doesn't encrypt all metadata: file paths, timestamps, and version history are visible to the server in plaintext for routing reasons.

Standard Notes

Standard Notes encrypts all notes, tags, and attachments end-to-end by default using AES-256-GCM (and XChaCha20-Poly1305 in newer client versions). Acquired by Proton in 2024, it inherits Proton's privacy-focused infrastructure. The server is a blind storage relay — it cannot decrypt anything. This is the most mature E2EE notes app in the space, with the longest track record.

Anytype

Anytype synchronizes via peer-to-peer (P2P) rather than a centralized server. End-to-end encryption applies by default to all data, which is replicated across nodes you control. The architecture is object-based — paragraphs, database rows, images are individually encrypted objects in a graph database — rather than file-based. This is rigorous but makes data export harder than with file-based apps.

Joplin

Joplin offers strong E2EE but it is not enabled by default — you must turn it on in settings. It synchronizes via your choice of Dropbox, OneDrive, Nextcloud, or a self-hosted Joplin Server. Encryption uses AES-256 applied locally before upload. The reliance on user setup means non-technical users may run unencrypted by accident.

AppFlowy

AppFlowy is local-first by default — your data lives on your machine and syncs through AppFlowy Cloud or self-hosted infrastructure. Standard cloud sync is encrypted at rest with keys AppFlowy holds, which is closer to Dropbox than to Standard Notes in security model. AppFlowy's standout privacy feature is its local AI Vault Workspace add-on: AI models run on your hardware so prompts and notes never leave your machine for inference. Verify current pricing on appflowy.com/pricing before committing.

Filarr

Filarr encrypts everything on disk by default with AES-256-GCM and a per-file FEK / single-KEK architecture. No account is required for the local workspace; the cloud sync is opt-in and zero-knowledge — keys never leave your device, the server stores opaque encrypted blobs only. KDF uses PBKDF2-SHA-512 (600,000 iterations) plus Argon2id (64 MiB memory cost, 3 iterations, 4 parallelism). Multi-profile isolation gives each profile its own keys: profile A cannot decrypt profile B. See Filarr's security architecture for the full threat model.

Which are fully open source?

License models in this space fall into three categories: full FOSS, Business Source License (BSL), and open core.

Logseq and Standard Notes are full FOSS. Logseq is AGPL-3.0; Standard Notes' desktop client, server, and mobile apps are AGPL-3.0. Either can be inspected, forked, and self-hosted without restrictions.

AppFlowy is open core. The Flutter/Rust desktop client is open source. Some backend orchestration — cloud routing, billing, certain enterprise features — is proprietary. You can self-host AppFlowy, but with caveats around premium features.

Outline uses BSL. Source is available, free to self-host for internal organizational use, but third-party SaaS deployment is forbidden — protecting Outline's own managed cloud business.

AFFiNE is more contested. The Community Edition (Blocksuite editor, frontend) is MIT-licensed, but the backend server packages required to self-host real-time collaboration sit under a separate Enterprise Edition license that forbids production use without a paid subscription. The OSS community has flagged this as "open washing" — the marketing leans on the MIT badge while critical components are proprietary.

Filarr uses BSL 1.1 with a fixed Change Date of April 19, 2030. On that date, the desktop client code automatically converts to Apache 2.0 — fully permissive, no exceptions. The cloud backend (api.filarr.com), billing, and Cloudflare R2 sync logic stay proprietary. See why Filarr chose BSL 1.1 for the licensing rationale.

How do synchronization architectures compare?

How your data syncs determines how well it survives — server outages, vendor shutdowns, cross-device latency. Three patterns dominate.

Centralized cloud sync. Obsidian Sync, Standard Notes, Filarr, AppFlowy Cloud. Your client encrypts data locally and sends ciphertext to the vendor's central server. If the vendor disappears, your local data is intact (in local-first apps) but sync stops working. Pricing as of writing (April 2026):

Obsidian Sync: from $5/month (verify at obsidian.md/sync)
Filarr: €4/month (10 GB, Solo) or €8/month (50 GB, Pro), 30-day free trial
Standard Notes: paid tiers via Proton (verify at standardnotes.com/plans)

For Filarr's centralized sync specifically: an ECDH P-256 multi-device pairing protocol exchanges keys directly between your devices through the server, but the server cannot reconstruct them. Storage is on Cloudflare R2, Europe region.

Peer-to-peer (P2P). Anytype's Any-Sync protocol replicates your encrypted data across your devices and optional decentralized nodes — no central authority. If Anytype the company shuts down, your data still syncs between your active devices. Most resilient architecture in the list, also the most operationally complex.

Self-hosted. Trilium, SilverBullet, Logseq (with custom sync), Joplin (with Joplin Server). You run the sync infrastructure: TLS certificates, reverse proxy, backups, security patching. You get total sovereignty — and the burden of operations.

Looking forward: the IETF's Messaging Layer Security (MLS) protocol — RFC 9420 is establishing primitives for group key agreement that could enable real-time, end-to-end encrypted document collaboration at scale. Currently focused on messaging, MLS's logarithmic operations point toward a future where collaborative editing on encrypted local-first data becomes computationally feasible.

What are the self-hosted Notion alternatives?

Self-hosting flips the trust model: instead of trusting a vendor's cloud, you trust your own infrastructure. Several alternatives support self-hosting fully or partially.

Outline (BSL) — the closest team-wiki replacement for Notion. Free to self-host for internal organizational use. Provides real-time collab, SSO, version history. Limit: third-party SaaS hosting is forbidden by the license.
AppFlowy (open core) — Notion-style databases, Kanban, and pages. The desktop client and a community AppFlowy Cloud are fully self-hostable. Limit: some enterprise orchestration features remain proprietary.
Trilium Notes (AGPL) — note-taking with rich hierarchies. Star-topology sync where clients connect to a self-hosted server instance. You manage TLS and reverse proxy.
Joplin (AGPL) — notes app with optional E2EE. Synchronizes via Joplin Server (which you self-host) or via your own Nextcloud, WebDAV, or S3 bucket.
SilverBullet (MIT) — Markdown-based personal knowledge management with a self-hosted server backend.
Anytype (open source) — technically not "self-hosted" in the classic sense, but its peer-to-peer Any-Sync protocol removes the need for any central server. Your devices sync directly.
Filarr — the desktop client is BSL 1.1 and runs entirely locally with no required server. For cloud sync between devices, Filarr uses its managed zero-knowledge service; a fully self-hosted sync backend is not currently supported.

If your priority is "no vendor server, ever", look at Anytype (P2P) or Trilium (self-hosted server you control). If your priority is "team wiki, like Notion, on my infra", Outline and AppFlowy are the strongest matches.

Which Notion alternatives are best for specific use cases?

The functional fit depends on what you actually do.

Personal knowledge management (PKM) and research:

Obsidian wins on plugin ecosystem, themes, and community. Local Markdown, fast indexing.
Logseq for outliner-style workflows. Strong on hierarchical bullet-point thinking.
Trilium for deep, complex hierarchies — uniquely supports cloning notes into multiple locations.

Team documentation and private wikis:

Outline for corporate team wikis with real-time collab and SSO.
AppFlowy for Notion-style databases, Kanban boards, and local AI processing.
AFFiNE for hyper-merged docs, databases, and visual whiteboards. Self-hosting is limited by license.

Secure journaling and high-sensitivity workspaces:

Standard Notes for plain text or rich text journaling with E2EE everywhere.
Filarr when you need encrypted files alongside encrypted notes, or cryptographically isolated multi-profile workspaces (one per client, one per project, one personal).

How does Filarr fit in?

Filarr targets the intersection of cryptographic security and rich personal knowledge management. It's built with Electron, available on Windows and Linux today, with macOS coming.

The product combines encrypted file storage with a TipTap-based note editor (block-based, wiki-links, transclusion, daily notes, flashcards), a knowledge graph view that maps notes plus files plus folders, an infinite canvas, and multi-profile isolation where each profile has its own encryption keys.

The cryptographic implementation:

AES-256-GCM cipher with per-file keys (KEK/FEK architecture)
KDF stack: PBKDF2-SHA-512 (600,000 iterations) plus Argon2id (64 MiB memory, 3 iterations, 4 parallelism) — defense against both GPU and ASIC brute-force
Optional TOTP 2FA (RFC 6238) with 8 single-use backup codes
Optional zero-knowledge cloud sync via Cloudflare R2 (Europe), opt-in only

What Filarr does not do (as of April 2026):

No real-time multi-user collaboration. E2EE collaboration on encrypted local-first data is still a research problem.
No mobile app. Desktop only.
No plugin ecosystem comparable to Obsidian.
No SOC2 or HIPAA certification.
macOS not yet shipped.

Pricing: Free local plan with no feature gating, no time limit, no account required. Optional cloud sync via Solo (€4/month, 10 GB) or Pro (€8/month, 50 GB). Pricing details.

How do you migrate from Notion to each alternative?

Notion exports as a ZIP containing Markdown and CSV files. Quality of import varies sharply.

To AppFlowy: the most complete native importer. Configure Notion's export as "Text & Markdown", drop the ZIP into AppFlowy. Folder hierarchy and basic database structures rebuild automatically. Complex relational databases and formula columns need manual reconfiguration.

To Obsidian: native Markdown import. Body content transfers cleanly. Notion databases become YAML frontmatter — to query them, you'll need the Dataview community plugin and to write queries.

To Trilium: native Markdown import, but cleanup-heavy. Notion's export intermingles HTML and Markdown unpredictably. Expect to use Trilium's JavaScript scripting engine to recreate database logic.

To Anytype: the hardest migration. Anytype's object-based architecture doesn't map cleanly to file-based Markdown — you'll manually reassign Notion pages to Anytype object types and rebuild relations.

To Standard Notes and Joplin: standard Markdown import. Joplin's Turndown HTML-to-Markdown plugin helps clean up Notion's verbose HTML.

To Filarr: drag the unzipped Markdown folder and assets into a Filarr profile. Wiki-links and transclusion are supported natively in Filarr's TipTap editor. Notion databases don't have a direct equivalent — you'll either rebuild as folders plus tags or work with what's there. Migration is deliberate, not one-click.

Which alternative should you choose?

There is no single "best" privacy-first Notion alternative. The market has split into two clusters: collaborative platforms (AppFlowy, Outline, AFFiNE) that approximate Notion's team features with better privacy guarantees, and individual-sovereignty platforms (Standard Notes, Obsidian, Logseq, Filarr) that prioritize local-first encryption over real-time collaboration.

Pick by threat model and workflow — and verify each app's current state before committing your data to it.

Download Filarr — free, encrypted, local-first →