Capell is a Laravel CMS built on Filament for large applications: reusable structure for developers, safer publishing for editors and optional features through extensions. capell.app
ALT Capell logo and the words “The extensible, open-source CMS for Laravel” above three feature points, with a glowing sunrise line over a dark teal background.
Before deployment, one diagnostics view checks sites, languages, themes, migrations and queues. Site admins see PageSpeed status on the page list, while upgrades keep durable logs and declared rollback rules.
PHPStan level 8 and 20,000+ tests enforce those boundaries, including tests that fail if editor internals or model IDs reach public HTML. Capell is open source. Start with the code: github.com/capell-app/capell