Engineering software, built for the firms that build infrastructure.
TAGCSOFT is the operating layer for TAGE engineering tools — identity, licensing, and project workflows in one place. Hydronium is the first desktop app on top of it.
One platform. A growing toolkit.
TAGCSOFT is the identity and licensing layer for every tool TAGE builds. Log In once, work everywhere.
TAGCSOFT
Plan projects, track time, and run your engineering office. The original tool on the platform — and the one that keeps the lights on.
Hydronium
Hydronium performs hydrology and hydraulics analysis for municipal drainage and Low-Impact-Design systems. Desktop app, signed and licensed through TAGCSOFT.
TAGCONNECT
A lightweight desktop client that signs you in once and unlocks every TAGE-built tool you’re licensed for. You won’t think about it much — that’s the point.
Why TAGCSOFT
We don’t sell software at engineers. We build the software we wished we had — and then we open the door.
Engineering-first
Designed by working civil engineers, for the day-to-day reality of running projects, fielding RFIs, and meeting deadlines.
Single sign-on across tools
One TAGCSOFT account. Every TAGE-built tool. Licenses follow the user, not the laptop.
Built and owned by working engineers
Independent. Quietly opinionated. Not chasing acquisitions or hype cycles — just shipping useful tools that earn their keep.