MyIP (IPCheck.ing) is an open-source web IP toolbox that detects local/public IPs, runs DNS leak and WebRTC checks, speed/latency/MTR tests, availability and whois lookups.

11.8k stars1.2k forksMITlast commit Actively maintained

Domain-Monitor is a SaaS domain and website monitoring service that checks domain registration/expiry, DNS and WHOIS changes, and site uptime, and sends alerts to notify operators of expirations, outages, or suspicious changes.
MyIP (IPCheck.ing) is an open-source web IP toolbox that detects local/public IPs, runs DNS leak and WebRTC checks, speed/latency/MTR tests, availability and whois lookups.

11.8k stars1.2k forksMITlast commit Actively maintained
Self-hostable domain portfolio manager that auto-fetches DNS/WHOIS/SSL data, tracks changes, monitors uptime, and sends configurable renewal and security alerts.

1.5k stars116 forksMITlast commit Actively maintained
Open source PHP app to manage domains, SSL certificates, registrars, hosting, DNS, IPs, and related internet assets, with reporting and optional WHM/cPanel data warehousing.

597 stars118 forksGPL-3.0last commit Likely dormant
Monitor domain names via RDAP, track full lifecycle history, receive alerts, and automatically attempt domain registration when domains enter deletion or become available.

393 stars31 forksAGPL-3.0last commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 3 of 4 shipped a commit in the last six months. Licences in this list: MIT, GPL-3.0, AGPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Core Network Services (DNS, DHCP, IPAM).