What is pocketsentry?

PocketSentry is a lightweight alternative to self-hosted Sentry, the popular error tracking service. Sentry's official self-hosted version requires running more than 40 Docker containers, consumes at least 16 GB of RAM, and depends on a stack of infrastructure components including Kafka, Redis, ClickHouse, and PostgreSQL. PocketSentry replaces all of that with a single executable file about 18 megabytes in size. The key design choice is compatibility. PocketSentry speaks the same network protocol as Sentry's servers, so existing Sentry SDKs for Python, JavaScript, Go, and other languages connect to it with no code changes. The only configuration needed is changing the DSN, which is the address and project key your application uses to report errors, to point at the local PocketSentry server instead of Sentry's cloud. Data is stored in a SQLite file on disk, which means no separate database to install or maintain. The binary is written in Go without CGO, meaning it has no dependency on system C libraries and can run as-is on Linux, including inside a Docker container if preferred. A built-in dashboard shows incoming errors in near real time, refreshing every two seconds. Errors are automatically grouped by project, message text, and severity level, with a counter showing how many times each unique error has been seen. Duplicate events do not each get their own entry. Beyond basic error capture, PocketSentry includes: detailed stack traces with syntax highlighting, breadcrumbs showing the sequence of user actions before an error occurred, JavaScript source map support for unminifying browser error locations, performance monitoring that tracks slow requests and displays a waterfall view of nested operations, release tracking to associate errors with specific versions of an application, webhook notifications to Telegram or Discord when new unique errors appear, a Telegram bot that lets team members resolve errors without opening the dashboard, and a retention policy that deletes old events automatically. The dashboard is protected by optional username and password. The error ingestion endpoint is unauthenticated by design, matching Sentry's model. PocketSentry is MIT licensed and the full README is longer than what was shown.