{"data":{"slug":"onesignal","name":"OneSignal","tagline":"Multi-channel messaging SaaS; Free now capped at 1k mobile MAU","category":"notifications","categoryName":"Notifications","url":"https://onesignal.com","github":null,"pricing":"freemium","hook":"OneSignal is the push/email/in-app suite when Knock is workflow-orchestration-first and ntfy is self-host curl.","whatsGood":"Push (mobile+web), in-app, email, Journeys. Free still useful for small apps: web push (10k/send), 10k emails/mo, mobile push/in-app under the Free MAU cap. Mature SDKs and dashboard.","theCatch":"Closed SaaS. LOUD (2026): Free mobile push/in-app limited to 1,000 MAU (new orgs Sep 1, existing Oct 1) — overage pauses mobile until Growth (from about $19/mo + per-MAU). Not Novu/Knock twins. SMS/RCS extra.","verdict":"Messaging SaaS. Free for tiny MAU; Growth meters mobile hard after 1k.","addedAt":"2026-09-04","featured":false,"domain":"Comms","subSpecialty":"Notifications","capabilities":["push","email","in-app"],"surfaces":["Self-host","Hosted"],"ecosystem":["Multi-platform"],"licenseModel":"Freemium","githubStars":null},"related":[{"slug":"ntfy","name":"ntfy","tagline":"HTTP pub-sub notifications you can curl from cron"},{"slug":"novu","name":"Novu","tagline":"MIT notification workflows with a real 0 USD Cloud"},{"slug":"listmonk","name":"Listmonk","tagline":"AGPL-3.0 self-hosted newsletters and transactional mail"},{"slug":"apprise","name":"Apprise","tagline":"BSD-2-Clause CLI that talks to a hundred notifiers"},{"slug":"gotify","name":"Gotify","tagline":"MIT self-host push server; Android-first, no ntfy.sh twin"}],"links":{"self":"/api/gems/onesignal","html":"/gems/onesignal","markdown":"/gems/onesignal.md","category":"/api/gems?category=notifications","categoryPage":"/stacks/notifications"}}