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OpenIPAM
What it is
OpenIPAM is a free, open-source tool for managing IP addresses and keeping network and infrastructure inventory. It handles CIDR subnets, address assignments and reservations, duplicate-IP conflict detection, VLANs, IP ranges, and subnet calculations. DHCP tracking covers scopes, leases, reservations, options, and utilization. The inventory supports 14 host types, including hardware lifecycle tracking, locations and racks, maintenance windows, and company records. It can run in a browser using local storage or with an optional Python Flask backend and server-side SQLite for multi-user access. Server mode supports SAML 2.0 single sign-on with Microsoft Entra ID, authenticated routes, and a REST API for entity management, search, dashboard statistics, and JSON backup or import. CSV host import and backup and restore covering DHCP data are supported. The project describes signed session cookies with an eight-hour lifetime and user-attributed audit entries. Browser-mode data stays in the browser; server-mode data is stored in a server-side SQLite file. The browser version can be opened from downloaded files, and the repository includes a Linux setup script for the backend.
For and against
For
- Tracks DHCP scopes, leases, and utilization
- Inventory supports 14 host types
- Browser mode keeps data in the browser
- Server mode includes a REST API and SAML SSO
Against
- Role-based access control is a listed contribution area
- DNS management is a listed contribution area
- Advanced reporting is a listed contribution area
The verdict
OpenIPAM brings address management, DHCP tracking, and infrastructure inventory together, with browser and server modes. Teams needing role-based access control, DNS records, topology views, or advanced reporting should note those listed gaps.
Who it suits
OpenIPAM suits homelabs, small businesses, network engineers, and IT departments managing addresses and asset records. Browser storage offers a local option, while the backend supports multi-user access.
Plans and prices
Free
Browser-only or Flask server mode · IPAM/CMDB features · self-hosted deployment
Read 15 Oct 2026 · github.com
OpenIPAM
Open-source · zero cost · browser-only or self-hosted backend
Read 7 Oct 2026 · github.com
On the record
- API
- Server mode provides a REST API with CRUD endpoints for entities, cross-entity search, dashboard statistics, and JSON backup or import.github.com · read 7 Oct 2026
- API authentication
- The server code allows health and authentication routes without a session and gates other API routes behind login and role checks.github.com · read 15 Oct 2026
- Audit history
- Create, update, and delete operations are logged with old and new values, and IP assignment history is retained.github.com · read 15 Oct 2026
- Authentication
- Server mode supports SAML 2.0 single sign-on with Microsoft Entra ID and requires authentication for routes.github.com · read 7 Oct 2026
- Backups and import
- It supports CSV host import and JSON database backup and restore, including DHCP data.github.com · read 7 Oct 2026
- Browser requirements
- Supported browsers are the latest two versions of Chrome, Firefox, Safari, and Edge with WebAssembly and ES6 support.github.com · read 15 Oct 2026
- Browser support
- The project lists current two-version support for Chrome, Firefox, Safari, and Edge and requires WebAssembly and ES6+ support.github.com · read 7 Oct 2026
- CMDB
- The inventory supports 14 host types, hardware lifecycle tracking, locations and racks, maintenance windows, and company records.github.com · read 7 Oct 2026
- CMDB host types
- The inventory supports 14 host categories such as virtual machines, physical systems, containers, firewalls, routers, switches, databases, and printers.github.com · read 15 Oct 2026
- Conflict detection
- The application flags duplicate addresses, subnet mismatches, and inappropriate network or broadcast addresses.github.com · read 15 Oct 2026
- Data privacy
- The README states that browser-mode data stays in the browser, while server mode stores data in a server-side SQLite file.github.com · read 7 Oct 2026
- Deployment
- The browser version can be opened from downloaded files, and the repository includes a Linux setup script for its optional backend.github.com · read 7 Oct 2026
- Deployment modes
- It can run entirely in a browser or use a Python Flask backend for shared server access.github.com · read 15 Oct 2026
- DHCP
- It tracks DHCP scopes, leases, reservations, options, and utilization.github.com · read 7 Oct 2026
- DHCP management
- DHCP features cover scopes, leases, reservations, options, and visual utilization indicators.github.com · read 15 Oct 2026
- Hardware lifecycle
- Host records can track warranties, end-of-life dates, purchases, vendors, models, and asset tags.github.com · read 15 Oct 2026
- Import and backup
- The product imports and exports host CSV files and supports full JSON backup and restore.github.com · read 15 Oct 2026
- Installation requirements
- Linux setup requires Python 3, pip, a virtual environment, and the xmlsec development library for SAML; macOS setup uses Homebrew for libxmlsec1 and pkg-config.github.com · read 15 Oct 2026
