{"data":{"slug":"diun","name":"Diun","tagline":"MIT notifications when Docker images update","category":"notifications","categoryName":"Notifications","url":"https://crazymax.dev/diun/","github":"https://github.com/crazy-max/diun","pricing":"open-source","hook":"Diun watches container images and notifies you when a new tag or digest appears, so you hear about base-image updates, app releases and security rebuilds without checking every registry by hand.","whatsGood":"MIT (crazy-max/diun), release v4.33.0 (2026-05-30), maintained since 2017, with commits this month. Runs as a single Go binary or a Docker image, reads from your container platforms and config files, and notifies through the services you already use. ★~5k.","theCatch":"It only notifies; it does not update containers the way Watchtower does. The release cadence is a few a year. You still need to decide which updates are safe.","verdict":"A lightweight way to know when your self-hosted images have updates.","addedAt":"2026-10-18","featured":false,"domain":"Comms","subSpecialty":"Notifications","subcategory":"Notifications","tags":["self-host","permissive","security","containers","active"],"capabilities":[],"surfaces":["Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"OSS/MIT","githubStars":4979,"starsPerWeek":11,"access":"free","archived":false,"repo":{"createdAt":"2017-12-30","pushedAt":"2026-10-16","license":"MIT","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"ntfy","name":"ntfy","tagline":"HTTP pub-sub notifications you can curl from cron"},{"slug":"novu","name":"Novu","tagline":"MIT notification workflows with a real 0 USD Cloud"},{"slug":"listmonk","name":"Listmonk","tagline":"AGPL-3.0 self-hosted newsletters and transactional mail"},{"slug":"apprise","name":"Apprise","tagline":"BSD-2-Clause CLI that talks to a hundred notifiers"},{"slug":"gotify","name":"Gotify","tagline":"MIT self-host push server; Android-first, no ntfy.sh twin"}],"links":{"self":"/api/gems/diun","html":"/gems/diun","markdown":"/gems/diun.md","category":"/api/gems?category=notifications","categoryPage":"/stacks/notifications"}}