I built an 18MB Sentry alternative in Go and HTMX

Self-hosting the official Sentry requires 40+ Docker containers and at least 16GB of RAM. That is too heavy for simple side projects or small VPS instances.

So, I built PocketSentry — a drop-in, lightweight alternative in pure Go. It uses less than 20MB of RAM and runs off a local SQLite database.

Here is what the real-time UI looks like:

Key Features

• Single 18MB Binary: The entire UI (built with HTMX and Tailwind CSS) is embedded into the executable using go:embed.
• Zero Dependencies: Runs on a pure-Go SQLite driver (no CGO).
• Auto-Deduplication: Groups identical events using SQLite ON CONFLICT UPSERT to prevent database bloat.
• Drop-in Compatible: Works with official Sentry SDKs out of the box.

Quick Start

1. Run the server:

./pocketsentry --port 8080

2. Point your existing Sentry SDK to it:

sentry_sdk.init(dsn="http://public@localhost:8080/1")

The project is completely free and open-source under the MIT license.

GitHub Repository: https://github.com/apvcode/pocketsentry