A self-hosted, real-time collaborative travel planner — with maps, budgets, packing lists, a journal, and AI built in.

             

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What you get

See all features

Most of what follows is an addon an admin switches on or off. Lists, Costs, Documents, Collab, Vacay and Atlas ship on; Journey, Collections, MCP, AI Parsing and AirTrail ship off and are marked below.

🧭 Planning Day plans: drag places between days and reorder inside a day, with undo. Notes and bookings drag the same way, and a map marker drops straight onto a day Maps: Leaflet, Mapbox GL or MapLibre GL (OpenFreeMap, no token), with clustering, photo markers and route lines. 3D buildings and terrain are Mapbox only Place search: Google Places when a key is set (photos, ratings, opening hours), otherwise OpenStreetMap with no key Place enrichment: descriptions, facts, hours and photo candidates from OpenStreetMap, Wikipedia, Wikidata and Wikimedia Commons POI explore: pull OpenStreetMap POIs by category for the current viewport over Overpass Import: shared Google Maps and Naver Maps lists, plus GPX, KML and KMZ files Export: GPX of a trip's places and tracks, and an ICS feed per trip or across all of them Routes: auto-sort a day (nearest neighbour then 2-opt, locked stops and hotel anchors stay put), driving, walking or cycling profiles over OSRM, then open it in Google Maps or CoMaps Public transport: door-to-door itineraries over Transitous Weather: 16-day forecast from Open-Meteo, no key. Dates outside that window read the archive for the same date instead Day notes: markdown body with an icon and a colour, reordered by drag and drop or moved to another day Trip dates: move a trip and the days re-date themselves, either dragging the bookings along or re-anchoring them. Trips also copy and archive	🧳 Bookings and money Reservations: 16 booking types with status, confirmation code, travellers and attached files Flights and trains: several legs with stopovers, per-leg times and endpoint timezones, against 4,045 bundled airports so local times resolve without a key Accommodation: a stay spans a range of days with a check-in window, and shows on every night it covers Booking import: EML, PDF, PKPass, HTML and TXT confirmations through KItinerary. Needs the kitinerary-extractor binary, which ships in the Docker image AirTrail (off by default): link a self-hosted AirTrail instance to import flights as reservations and keep them in sync Costs: split expenses in integer cents with equal or custom shares, several payers per expense, settle-up suggestions, a settlement log, and CSV export Currencies: a currency per expense with the rate frozen at entry. Rates come from Frankfurter, no key Packing lists: categories, admin-managed templates, assignees, three visibility tiers, and a packed-of-total line. Bags with weight roll-up are a separate admin switch, off by default To-dos: assignee, due date, priority, and a reminder before one falls due Files: attach to a trip, place, day entry or reservation. 50 MB each, 500 MB for video, with trash and restore PDF export: cover page, place photos, day notes, bookings and costs, with an optional page break per day
👥 Collaboration Real-time sync (WebSocket): edits land live for everyone who has that trip open Members: add by email or username, hand ownership to someone else, or add guests who have no login at all Permissions: an admin maps each of 16 trip actions to admin, trip owner, trip member or everybody Invite links: one reusable link per trip with an optional expiry. Admins can also issue signup invites with a use limit that drop the new account straight into a trip Public share: a read-only trip page anyone can open without an account Collab: group chat with replies, reactions and link previews, shared notes with attachments, polls, and a What's Next list of upcoming activities. Each of the four switches on its own 📔 Journal, Atlas and Vacay Journey (off by default): dated entries with story, mood, weather and tags, photos and video from uploads or a linked Immich or Synology Photos library, map views, co-authors, and a public share link Atlas: mark countries and sub-national regions visited on geoBoundaries outlines, plus a bucket list, travel stats and a consecutive-years-travelled count Vacay: leave calendar with half days, public holidays from date.nager.at, school holiday overlays for 16 European countries, carry-over between years, and joint or read-only sharing of a plan Collections (off by default): a place library outside any trip, with labels, ratings, a custom image per place, copy-into-a-trip, and sharing by invite	🧩 Plugins Third-party plugins: install from the TREK registry or sideload a zip, switch on per instance, with their own pages under /plugins/<id> Sandboxed: one child process per plugin, 63 grantable permissions, an admin-edited outbound host allowlist, memory and RPC caps, and daily caps on AI and notification calls Trust: registry downloads are pinned by sha256 and checked against the author's minisign key. A sideloaded zip is marked unverified, and TREK_PLUGINS_ENABLED=false turns the whole system off Extension points: map markers and layers, place details, day schedules, PDF sections, Atlas layers, journal rows, trip warnings, calendar sources, route profiles and notification channels. Plugin pages run in an opaque-origin iframe SDK: trek-plugin-sdk on npm, with a manifest validator, a mock host, and a dev-link mode that runs a local build against real data 🤖 AI and MCP MCP server (off by default): OAuth 2.1 with mandatory PKCE and dynamic client registration. 199 tools, 30 resources, 4 prompts Scopes: 29 scopes in 14 groups, each one tickable on the consent screen. Tokens are bound to the /mcp resource, and every tool call lands in the audit log Reach: create trips and days, edit places, packing lists, to-dos, costs, reservations, collections and journeys, mark countries visited, all inside the scopes the token holds Prompts: trip-summary, plus packing-list and budget-overview when those addons are on Addon-aware: seven addon gates decide which tools and resources a session sees. Flipping one drops live sessions so the surface re-registers Booking extraction (off by default): read a confirmation with a local Ollama server, any OpenAI-compatible endpoint, or Anthropic, configured instance-wide or per user
📱 Mobile and offline Installable: iOS and Android straight from the browser, no App Store. Runs standalone without browser chrome, with the status bar tinted per theme Phone layouts: a separate shell below 768px with its own tokens, a bottom bar and safe-area insets. Which items sit in that bar is up to the user Offline reads: the app shell and every route chunk are precached, and trips, places and file blobs live in a per-user IndexedDB store, so a trip opens with no network Offline writes: mutations queue and replay with an X-Idempotency-Key, so a reconnect cannot double-apply. A stale edit is parked for a keep-mine or keep-theirs choice Offline maps: pre-download a trip's raster tiles, and clear them again API responses are never cached by the service worker. They vary per session, so they always come from the network	⚙️ Admin, accounts and security Login methods: password login, password registration, OIDC login, OIDC registration and passkey login each switch on and off on their own. OIDC_ONLY leaves SSO as the only way in SSO (OIDC): one provider by discovery, with PKCE and id_token verification (Authentik, Keycloak, Google and the like) 2FA: TOTP with ten single-use backup codes, and an admin can require it instance-wide Passkeys: WebAuthn login by fingerprint, face, PIN or security key, off until an admin enables it. A passkey also satisfies the 2FA requirement Hardening: per-IP limits on login, password reset and 2FA attempts, a password policy, secrets encrypted at rest and masked on read, and an SSRF guard on every URL you configure Admin panel: users and invites, the permission matrix, packing templates, categories, addons, plugins, API keys, MCP tokens and OAuth sessions, backups, storage, audit log, and GitHub releases Backups: manual or scheduled hourly, daily, weekly or monthly, with retention in days. The zip carries the at-rest key, so a restore can decrypt its own secrets Storage: pluggable storage backends per content category — keep everything on local disk, or add S3-compatible backends and replicate any category to them, configured entirely from the admin panel Notifications: a per-user matrix of events against in-app, email (SMTP), webhook and ntfy, plus any channel a plugin registers Appearance: light, dark or follow the OS, seven colour schemes plus a custom accent, transparency, compact density, reduce motion, and text size per tier 23 languages: en, de, es, fr, it, nl, hu, ru, zh, zh-TW, pl, cs, ar (right to left), br, id, tr, ja, ko, uk, gr, sv, vi, ca In-app help: the wiki ships inside the image and is served from disk at /help, so the docs match the version you are running

AI usage

We use LLM-assisted coding tools across parts of this codebase. Nothing ships that a maintainer has not read and understood: every change goes through a pull request, is reviewed and tested, and has a human who can answer for it. "The AI wrote that" is not an answer any of us would accept from ourselves.

See How we use AI in TREK for the details.

Get started in 30 seconds

ENCRYPTION_KEY=$(openssl rand -hex 32) docker run -d -p 3000:3000 \
  -e ENCRYPTION_KEY=$ENCRYPTION_KEY \
  -v ./data:/app/data -v ./uploads:/app/uploads mauriceboe/trek

Open http://localhost:3000. On first boot TREK seeds an admin account — if you set ADMIN_EMAIL/ADMIN_PASSWORD those are used, otherwise the credentials are printed to the container log (docker logs trek).

Docker Compose  ·  Helm / Kubernetes  ·  Install as PWA  ·  Reverse Proxy

Tech stack

Real-time sync via WebSocket (ws). Backend on NestJS 11. State with Zustand. Auth via JWT + OAuth 2.1 + OIDC + Passkeys (WebAuthn) + TOTP MFA. Weather via Open-Meteo (no key required). Maps with Leaflet and Mapbox GL.

Docker Compose (production)

The repository ships a ready-to-use docker-compose.yml with secure defaults and every option documented inline. Download it, then:

docker compose up -d

See Install with Docker Compose for the full walkthrough.

Helm (Kubernetes)

helm repo add trek https://chart.liketrek.com
helm repo update
helm install trek trek/trek

See charts/README.md for values.

Install as App (PWA)

TREK works as a Progressive Web App — no App Store needed.

1. Open TREK in the browser (HTTPS required)
2. iOS: Share ▸ Add to Home Screen
3. Android: Menu ▸ Install app (or Add to Home Screen)

TREK then launches fullscreen with its own icon, just like a native app.

Updating

See Updating — Docker Compose, Docker run, Helm, Portainer, Unraid and Proxmox, plus the encryption-key note.

Reverse Proxy

For production, put TREK behind a TLS-terminating reverse proxy. TREK uses WebSockets for real-time sync, so the proxy must support WebSocket upgrades on /ws.

If you use the MCP addon, the proxy must also pass the Mcp-Session-Id header through in both directions on /mcp — Nginx and Caddy do this by default, but a proxy that strips it makes every tool call open a new session instead of reusing one. See the Reverse Proxy wiki page for details.

Nginx

server {
    listen 80;
    server_name trek.yourdomain.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    server_name trek.yourdomain.com;

    ssl_certificate     /etc/ssl/fullchain.pem;
    ssl_certificate_key /etc/ssl/privkey.pem;

    # 500 MB covers backup-restore uploads (capped at 500 MB server-side).
    client_max_body_size 500m;

    location / {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    location /ws {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 86400;
    }

    # Only needed if you use the MCP addon. Responses are Server-Sent Events,
    # so buffering must be off or tool results arrive late.
    location /mcp {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_buffering off;
        proxy_read_timeout 3600s;
    }
}

Caddy

trek.yourdomain.com {
    reverse_proxy localhost:3000
}

Caddy handles TLS and WebSockets automatically.

Environment variables

Every variable, its default and what it does: see Environment Variables.

Star History

Data sources

The Atlas map's country and sub-national (province/county) boundaries come from geoBoundaries (Runfola et al., 2020), licensed CC BY 4.0. See NOTICE.md for full third-party attributions.

License

TREK is AGPL v3. Self-host freely for personal or internal company use. If you modify and offer TREK as a network service to third parties, your modifications must be open-sourced under the same licence.