Caddy vs SafeLine
| Tagline | Automatic HTTPS web server and reverse proxy with zero config TLS | Web application firewall and reverse proxy to block attacks and exploits |
| Category | Self-Hosting Platforms & PaaS | Self-Hosting Platforms & PaaS |
| Replaces | Heroku, Netlify, Render | Heroku, Netlify, Render |
| GitHub stars | 73k | 22k |
| Language | Go | Docker |
| License | Apache-2.0 | GPL-3.0 |
| Self-host difficulty | 3/5 Moderate | 3/5 Moderate |
| Deploy options | Docker Docker Compose Manual | Docker Docker Compose |
| Managed hosting | ||
| Last updated | today | yesterday |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
Caddy
- Not a full PaaS; no git push deploy, build pipelines, or app lifecycle management
- No built-in CI/CD integration; needs to be combined with other tools for deployments
- Dashboard and metrics require third-party tools (Prometheus, Grafana) — none built-in
- No managed database provisioning or environment variable secrets management
SafeLine
- Not a PaaS replacement in the traditional sense; focused solely on WAF/security, not app deployment
- Bot management and advanced DDoS protection lag behind commercial WAF offerings like Cloudflare
- No built-in CDN or global edge network for performance benefits
- API security coverage (GraphQL, gRPC) is more limited than enterprise WAF solutions
Bottom line
Both are a similar lift to self-host; choose Caddy for the larger community and ecosystem. Caddy has seen more recent development. Open each guide below for deploy steps and the full feature gap.