Svix is $45/mo (Starter). Plumb is a self-hosted alternative at $0.99/mo. Here's when each makes sense.
| Plumb | Svix | |
|---|---|---|
| Hosting | Self-hosted, your infra | Open source core. Advanced features require paid license. |
| Data location | Your server, your disk | Your server (if self-hosted) |
| Free tier | 5 relays | Paid only |
| Pro pricing | $0.99/mo | $45/mo (Starter) |
| Dependencies | None (single binary + SQLite) | Docker, Postgres, etc. |
| Setup time | ~30 seconds | 15-30 minutes (self-host) |
| Dashboard | Built-in at /ui | Web UI |
| License | BSL 1.1 | Open source |
Plumb is a single Go binary with embedded SQLite. Install it with one command, and you are running in under a minute. Your data stays on your server.
curl -fsSL https://stockyard.dev/plumb/install.sh | sh
Choosing between Plumb and Svix is less about which tool is better and more about what kind of infrastructure you want to maintain. Svix at $45/mo (Starter) handles hosting, backups, and uptime for you. Plumb at $0.99/mo shifts that responsibility to you — but also shifts the control. If you already run servers, Plumb adds negligible operational burden. If you do not, Svix removes it entirely.
Plumb runs as a single static binary with an embedded SQLite database. There is no application server, no cache layer, no background worker. One process handles HTTP requests and reads from and writes to the database file directly. This simplicity is the entire point — fewer moving parts means fewer things that can break at 2 AM.
Both Plumb and Svix offer self-hosted options, but the operational requirements differ. Open source core. Advanced features require paid license. Plumb is a single binary with embedded SQLite — no containers, no external databases, no orchestration. The practical difference: Plumb runs on a $5 VPS with no configuration. Self-hosting Svix typically requires a more substantial infrastructure investment.
Switching from Svix to Plumb is straightforward for most teams. Export your data from Svix (most services offer CSV or JSON export), then POST each record to Plumb's API. A migration script that reads the export and writes to /api/ endpoints typically takes less than 50 lines of code. The reverse migration is equally simple — Plumb's SQLite database is a standard file you can query with any SQLite client.
Single binary. Free to start. $0.99/mo for Pro.