Puranjay Savar Mattas
f1cc8607b0
MACOSX_DEPLOYMENT_TARGET was 27.0 across all 6 build configs (app +
both test targets) - an artifact of Xcode defaulting it to match the
beta SDK this is developed against, not an actual code requirement.
At 27.0 the app would only install for people running a macOS beta
that doesn't even exist for the general public yet.
14.0 is the real floor, already documented as the target in
CLAUDE.md ("macOS 14+ minimum, needed for mature AttributedString/
TextKit 2 APIs") and required independently by @Observable/SwiftData,
which are used throughout (SessionStore, StarStore, TipJarStore,
OfflineCacheStore, APIFailureCenter, etc.). Everything else added
this session - StoreKit 2, ImageRenderer, requestReview, CryptoKit -
is available well before 14, so nothing pushes the floor higher.
README's "macOS 27+" end-user requirement corrected to 14+ to match
(the "Xcode 27+" line just above it is a separate, still-accurate
build-from-source requirement, left alone).
Not compiler-verified against the 14.0 SDK - this project has never
actually been built with this deployment target before (always 27.0
during this session's development), so a real Xcode build now may
surface "only available in macOS 15+/26+" errors on any API used
without realizing it needed newer than 14. Needs an actual build
before submission, not just a lower number in the project file.
4.6 KiB
Outpost
A native Apple ecosystem client for Outline — built for iOS, iPadOS, and macOS from a single SwiftUI codebase, aiming for full editing parity with Outline's web app, including realtime collaborative editing.
macOS only for now. Expect missing features and rough edges. iOS/iPadOS support is planned but not in the current build. See the releases page for changelogs, and open an issue if you hit anything.
Why
Outline's web app is great, but there's no native Apple client with full editing parity. This project connects to a self-hosted Outline instance over its REST API and realtime collaboration socket to provide a proper native experience across the Apple ecosystem.
Requirements
- Xcode 27+ (currently developed against an Xcode 27 beta — this is a hard minimum, not a suggestion)
- macOS 14+ to run the app. iOS/iPadOS support is planned but not in the current build (see the note above)
- A self-hosted (or hosted) Outline instance with API access
Setup
- Clone the repo and open the
.xcodeprojin Xcode. - Generate a scoped API key on your Outline instance (Settings → API Keys).
- On first launch, enter your instance URL and API key — these are stored in Keychain, never in app config or source.
Architecture
See CLAUDE.md and docs/ARCHITECTURE.md for the full technical breakdown: REST layer, Yjs/Hocuspocus realtime sync via YSwift, and the ProseMirror-schema-to-native-editor mapping.
Disclaimer
This project is being built to solve a personal problem — I wanted a genuinely good native knowledge-base client for my own self-hosted Outline instance and none of the existing options fit. It's a personal-use tool first, not a polished product with support guarantees.
Parts of this codebase are AI-assisted (built with the help of AI coding tools). Treat that however you like — review, use, fork, or ignore the code accordingly. No warranty of quality, security, or fitness for any particular use is implied beyond what's stated in the license below.
License
Outpost itself is licensed under the Business Source License 1.1 — the same license family Outline's own server uses, for the same reason. In short: free to read, self-host, and modify for personal or non-commercial use; not free to repackage as a competing hosted product or to distribute under a name/branding that claims official or affiliated status. It converts automatically to Apache License 2.0 on the change date stated in LICENSE. "Outpost" and its logo are trademarks of the project — see the license's trademark notice.
This project is a client only — it does not include, vendor, or redistribute any of Outline's own (also BSL 1.1 licensed) server source.
Credits
The native markdown editor is built on swift-markdown-engine by Luca Chen, licensed under Apache License 2.0. It's vendored directly in Vendor/swift-markdown-engine (see its LICENSE); local fixes made in that copy haven't been upstreamed yet.
Privacy
Outpost collects nothing about you — no analytics, no telemetry, no crash reporting of its own, no age or demographic data, nothing. The only thing stored locally is your Outline server URL and API token (in the device Keychain) and, optionally, a local offline cache of what you've viewed. Everything else goes straight from your device to whatever Outline server you configure — there's no backend in between, and the developer has no access to your data or your server.
Full policy, terms of service, and data-processing statement are on the wiki:
Not affiliated with Outline
This is an independent, unofficial client. Not affiliated with or endorsed by General Outline, Inc.