Open source alternatives to Courier

One project on starwire does the same job. Ranked by how much of what Courier does each one covers, read from its README and website. Ties go to the most active.

What Courier does

One API for email, SMS and pushcore
Routing across channelscore
Notification templates
User preferences
In-app inbox
Delivery logs and analytics
Provider integrations

Each dot in the table is one job, in this order. Square dots are core jobs and count double. Full means yes, half means partly. "See the evidence" under a project shows the line behind each one. Coverage is what a project documents, not how well it works or how hard it is to move to. How we score this

Project	Covers	Stars	Commits, 12 weeks	Last release	Closed vs opened	Setup	License
notifkitSelf-hosted notification service sending email, SMS and push through one call	Replaces it89%	176+2	263	9 days ago	Too few	Needs a server	MIT
Covers all 2 core jobs. Not shown: In-app inbox.See the evidence One API for email, SMS and pushcoreYesOne API call handles push, email, SMS, chat, and webhooks Routing across channelscoreYesThat call tries push, then email if push fails. Notification templatesYestemplate rendering, and delivery tracking User preferencesYesPreferences, consent, quiet hours, retries In-app inboxNot shownNeither the README nor the website mentions it. Delivery logs and analyticsYesan admin dashboard, and delivery logs built in Provider integrationsYesprovider accounts you already have

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