Executes commands in response to file modifications.

Software development often involves running the same commands over and over. Boring! watchexec is a simple, standalone tool that watches a path and runs a command whenever it detects modifications.

Pgpool-II is a middleware that works between PostgreSQL servers and a PostgreSQL database client.

Pgpool-II saves connections to the PostgreSQL servers, and reuse them whenever a new connection with the same properties (i.e. username, database, protocol version) comes in. It reduces connection overhead, and improves system's overall throughput.