Observability & Monitoring

Watchdog

Monitor file system events with API and shell utilities.

Status
Generally available
Last checked
Checked · Oct 13, 2026
License
Open source
Pricing
Free tier · from $0
Visit Watchdog Compare with alternatives

What it is

Watchdog is a powerful tool for monitoring changes in the filesystem. It provides both an API and command-line utilities to track modifications, making it essential for developers working on projects that require real-time updates or automated responses to file changes.

Watchdog stands out with its robust API and cross-platform support, making it an ideal choice for developers who need precise control over filesystem event monitoring.

When it fits — and when it doesn’t

A good fit for

  • Developers working on projects requiring real-time monitoring of file system events

  • Teams needing to automate tasks based on changes in the filesystem

  • Projects that require cross-platform support for file monitoring

Look elsewhere if

  • Scenarios where a cloud-based solution is preferred over local execution

  • Use cases that do not involve real-time or automated responses to file system events

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited support for non-Python environments

    Primary language is Python, with no official support for other languages like JavaScript or Go

  2. 02

    Performance issues on large file systems

    Watchdog can become slow and unresponsive when monitoring directories with a high volume of files

What it does well

  • Real-time monitoring of file system events

  • Cross-platform support (Linux, macOS, Windows)

  • Flexible API for custom event handling

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up Watchdog

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
Get the badge

A small badge for Watchdog’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.

Watchdog — tracked on AI Navigator

Markdown

[![Watchdog — tracked on AI Navigator](https://navigateaitools.com/badge/watchdog.svg)](https://navigateaitools.com/explorer/tool/watchdog)

HTML

<a href="https://navigateaitools.com/explorer/tool/watchdog"><img src="https://navigateaitools.com/badge/watchdog.svg" alt="Watchdog — tracked on AI Navigator" height="58"></a>