Family Communication & Household Wiki

Two underserved problems: the family group chat (where decisions actually happen) and the household runbook (where's the water shutoff, when does the trash come, what's the Wi-Fi password for guests, who's the pediatrician). For the calendar overlap see Family Calendars; for photo sharing specifically see also Self-Hosted Photos & Media; for the deeper notes / wiki layer see Self-Hosted Notes & Wiki; for vital-document storage see Insurance & Vital Documents.

Family group messaging

• ★ iMessage — free; Apple-house default; rich reactions, replies, group photos. Now supports RCS to Android (iOS 18+) so green-bubble fights are softening.
• ★ WhatsApp — free; the default outside the US; cross-platform; encrypted by default; Meta-owned (privacy caveat).
• ★ Signal — free OSS; the privacy default; encrypted; cross-platform; the "we care about who reads our family chat" answer.
• Telegram — free + paid Premium; less encrypted-by-default; popular in some communities.
• Facebook Messenger — free; declining for family use.
• Cozi messages — bundled in the Cozi app; thin (see Family Calendars).
• Discord — free + paid; over-engineered for "are you home from school" but works for tech-comfortable older families.

Photo sharing within the family

• ★ ★ Apple Shared Albums (iCloud) — free; the Apple-house default; up to 100 collaborators, per-album sharing, comments + reactions; works on Apple TV.
• ★ Google Photos shared albums — free + paid storage; cross-platform; partner sharing auto-shares specific people's faces.
• Google Photos Family Library — free; share a single library across the family.
• Amazon Photos — free with Prime; less sticky.
• Immich — free OSS; self-host Google-Photos clone; great for "we don't want our family photos in any cloud." See Self-Hosted Photos & Media.
  • https://github.com/immich-app/immich
• Photoprism, Ente — alternatives; see Self-Hosted Photos & Media.
• FamilyAlbum (mixi) — free + paid; kids-photo-flavored; share with grandparents who don't tech.
• Tinybeans — paid + free; same idea.

Household runbook / family wiki

The "where's the water shutoff, what's the alarm code, what's the Wi-Fi password for guests, who do we call for X, when does the trash come" knowledge.

• ★ Notion — free + paid; the most-used family wiki; one page per topic; mobile-friendly; shareable. Easy for non-technical family members.
• ★ Obsidian — free + paid sync; plain Markdown; backed by your own files; works offline; iCloud / Syncthing for sync. The "I want my notes to outlive any vendor" answer. See Self-Hosted Notes & Wiki.
• ★ TriliumNext — free OSS; self-host hierarchical notes with scripting; the geek-flavored Notion alternative.
• Anytype — free; "local-first, encrypted Notion"; growing.
• Apple Notes — free; shared notes; the lazy-but-defensible default; works fine for many families.
• Google Docs — free; one shared doc; less structure but familiar.

What goes in the runbook (the canonical list)

• Utility shut-offs: water main, gas main, electrical breaker panel — with photos + diagrams.
• HVAC: filter size, filter brand, last replacement, schedule.
• Wi-Fi: SSID, password, guest network info, router model, ISP account number.
• Trash + recycling schedule + sorting — see Trash & Recycling.
• Important contacts: pediatrician, vet, family doctor, dentist, plumber, electrician, HVAC tech, locksmith, neighbor with a key.
• Emergency contacts — see Emergency & Disaster Prep.
• Appliance manuals + warranties — links / PDFs / Centriq pointers (see Home Maintenance Scheduling).
• Subscription list — what bills come monthly + what we pay (see Subscription Management).
• Insurance policies — agent contact + policy numbers (see Insurance & Vital Documents).
• Kids' info: school, schedule, allergies, blood type, current meds.
• House quirks: "the dishwasher rattles unless you push it back," "the basement light needs to be left on for the dehumidifier."
• Babysitter brief — see Babysitter & Tutoring; a printable PDF of the above.

Family video calls / "checking in"

• FaceTime, Google Meet, Zoom — free; for grandparents.
• Marco Polo — paid + free; video-message app (asynchronous); huge with extended families.
• Group video in WhatsApp / Signal — free; up to ~32.

License / pricing

• iMessage, WhatsApp, Signal, Telegram, FB Messenger, FaceTime, Google Meet: free.
• Marco Polo: paid + free.
• Apple Shared Albums, Google Photos: free + paid storage tiers.
• Immich, Photoprism: OSS, free, self-host.
• FamilyAlbum, Tinybeans: paid + free.
• Notion: free + paid.
• Obsidian: free + paid sync.
• TriliumNext, Anytype: OSS, free.
• Apple Notes, Google Docs: free.

Pick this if…

• Default family chat, US Apple-house: iMessage.
• Default family chat, international / mixed: WhatsApp or Signal.
• Privacy default: Signal.
• Default photo share, Apple-house: Shared Albums.
• Default photo share, mixed OS: Google Photos.
• Default photo share, self-host: Immich.
• Family wiki, easy for everyone: Notion.
• Family wiki, durable, plain-text: Obsidian + iCloud / Syncthing.
• Family wiki, the laziest defensible: Apple Notes shared.
• Async video calls with extended family: Marco Polo.