dgtlmoon
dgtlmoon is the GitHub identity of Leigh Morresi, an open-source developer and entrepreneur behind changedetection.io. The project monitors web pages, feeds and APIs for changes and sends alerts, with a free self-hosted Apache-2.0 implementation and a hosted service that financially supports the project.
At a Glance
- Smart shoppers and bargain hunters
- Developers and self-hosting/home-lab users
- Data journalists and researchers
- Network security, aerospace and data-science professionals
- +1 more
AI Tools by dgtlmoon
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changedetection.io
Open Source Web Change Monitor
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Latest News
Changelog: fixes for locale-formatted restock prices, release metadata/container publishing and Unix-time notification formatting
GitHub repository activity: Spanish translation update and continued maintenance; repository showed 2,589 commits
Release 0.60.8: HTTP browser caching, reverse-proxy language routing fixes, stronger import/API type verification, LLM UI improvements and first PWA work
Release 0.60.7: parallel favicon fetching, history-diff UI improvements, license cleanups and optional sharing controls
Products & Services
Apache License 2.0 Python application for monitoring web pages, HTML/XML/JSON feeds and API responses, comparing snapshots and delivering notifications. Available through Docker, Docker Compose or pip. Source: https://github.com/dgtlmoon/changedetection.io
Cloud-hosted monitoring service at changedetection.io; $8.99/month, up to 5,000 URL watches, approximately five-minute rechecks per runner, a real Chrome browser, geographic/Tor proxies, automatic updates and 85+ notification formats. Source: https://changedetection.io/
Built-in API for programmatic watch, tag/group, notification and history management, documented as API v1. Source: https://changedetection.io/docs/api_v1/index.html
Browser extension for adding the current web page to monitoring, distributed through the Chrome Web Store and linked from the project README. Source: https://github.com/dgtlmoon/changedetection.io
Market Position
Positioned as a simple, privacy-friendly and extensible open-source alternative to hosted page-monitoring services such as Visualping and Follow That Page: it can be self-hosted, supports unlimited local watches/checks subject to the operator's resources, offers Docker/API/browser automation, and also has a low-cost managed option. Its differentiators are broad notification support, restock/price detection, conditional rules and deep self-hosting control. Sources: https://github.com/dgtlmoon/changedetection.io and https://news.ycombinator.com/item?id=29779618
Leadership
Founders
Leigh Morresi (dgtlmoon)
Long-time open-source enthusiast who started with Linux kernel 2.0 and dial-up bulletin boards; described by opensource.com as a product owner and entrepreneur. The dgtlmoon GitHub profile links to changedetection.io, and the repository credits dgtlmoon as its principal maintainer. Sources: https://opensource.com/article/22/9/changedetection-io-open-source-website-changes and https://github.com/dgtlmoon
Founding Story
Morresi built changedetection.io as a simple, self-hostable way to watch websites and get change notifications, addressing the need to track pages, feeds, prices and availability without relying on a proprietary service. The initial vision evolved into an open-source project supported by a hosted subscription; the project README says it is intended for content edits, conditional changes, price changes and restock alerts.
Business Model
Revenue Model
Open-source self-hosting is free under Apache License 2.0. Revenue comes from the official hosted/cloud subscription, which provides managed browsers, proxies, updates and support and is used to financially support the open-source project. Commercial support is also offered. Sources: https://changedetection.io/ and https://github.com/dgtlmoon/changedetection.io
Pricing Tiers
Cancel anytime; up to 5,000 URL watches, rechecks from about five minutes per runner, one real Chrome browser, European/US/Tor proxy locations, 85+ notification formats, filters and URL import. Source: https://changedetection.io/
Target Markets
- Smart shoppers and bargain hunters
- Developers and self-hosting/home-lab users
- Data journalists and researchers
- Network security, aerospace and data-science professionals
- Organizations needing website compliance, availability or defacement monitoring
- Price-drop, product availability and restock monitoring
- News, blog, documentation and content-change tracking
- Security advisories and software-release monitoring
- Website defacement and compliance monitoring
- Monitoring JSON APIs, XML/RSS feeds and other machine-readable endpoints
- Authenticated or JavaScript-heavy sites requiring browser automation
- The project README says the software is depended on by network security, aerospace, data-science and data-journalist professionals, but does not name customer organizations. Source: https://github.com/dgtlmoon/changedetection.io