What is License Borrowing in network CAD setups?

License borrowing allows an engineer to disconnect their laptop from the corporate network and 'borrow' a license from the server for a set number of days (usually up to 30 days). The server locks that seat as checked out, and the engineer can work completely offline in the field. When the borrow period expires, the license automatically returns to the server pool, even if the laptop is not reconnected.

Are floating licenses more expensive than named subscriptions?

Yes, vendors typically charge an upfront premium (often 1.5x to 2x the cost of a standard standalone license) for floating rights. However, because one floating license can easily serve 2 to 3 designers, the total cost for teams larger than 15 engineers is significantly lower than buying individual named subscriptions for everyone.

What license servers do CAD systems use?

The most common local network license server technology is Revenera's FLEXlm (FlexNet Publisher) or LMTools, which uses secure encryption keys to monitor concurrency. Vendors also offer proprietary cloud-based floating servers that do not require local server hardware.

Shared Floating Server10 Validated Engines

Network & Floating License CAD (2026) — Shared Server Seats

Network licensing—also known as Floating or Concurrent licensing—is the gold standard for enterprise CAD management. In this model, your company purchases a 'pool' of licenses (e.g., 20 seats) and installs them on a central license server on your local network. When an engineer launches the CAD software, the program requests a license from the server. If a seat is available, the server 'checks out' the license, and the engineer can work. When they close the program, the license is instantly returned to the server pool. This floating mechanism optimizes software utilization, allowing a team of 100 designers to work smoothly with a pool of only 30 or 40 floating licenses.

Core Takeaway:Network licensing is highly efficient for global engineering organizations with design offices in different time zones, allowing seats to float seamlessly across shifts.

Enterprise Admin GuideFloating License Server Setup

FLEXlm Server Daemon Optimization & Borrowing Pools

Deploying concurrent floating network licenses is the most efficient configuration for global teams. Centralizing license keys inside local server engines (like Revenera FLEXlm or LMTools) optimizes seat ratios. Review our systems engineering guidelines below:

Options Files Setup

Configure `adskflex.opt` or local equivalents to reserve critical floating seats for lead project engineers and automatically reclaim idle seats after 15 minutes of viewport inactivity.

Borrow Parameters

Set the maximum borrowing duration to exactly 7 or 14 days instead of the 30-day default. This protects the floating seat pool from being locked on offline field laptops indefinitely.

Dual-Daemon Ports

Always bind both the license manager (`lmgrd`, default port 27000) and the vendor-specific daemon (`adskflex`, etc.) to fixed TCP ports inside your firewall to allow stable VPN routing.

IT Savings:Floating license sharing operates on an average 2.5:1 ratio. For a team of 100 designers, a pool of only 40 floating licenses is typically sufficient, shaving 60% off enterprise capital budgets.

Network / Floating License Matrix: side-by-side catalog standards

CAD Platform	Editor Score	License Server Tech	License Borrowing Limit	Enterprise Premium	Global Rights Support
Altium Designer	★ 4.9	Cloud floating login	Up to 30 Days offline	15-20% floating key premium	Included in enterprise seats
Revit	★ 4.9	Cloud floating login	Up to 30 Days offline	15-20% floating key premium	Included in enterprise seats
SolidWorks	★ 4.9	Cloud floating login	Up to 30 Days offline	15-20% floating key premium	Included in enterprise seats
ArchiCAD	★ 4.8	Cloud floating login	Up to 30 Days offline	15-20% floating key premium	Included in enterprise seats

Ranked Network / Floating License Solutions & Review Index

1.
AD
Altium Designerfrom $3850 · Windows
★ 4.9/ 5 Rating
The professional standard for PCB and electronics design.
View full benchmarks and compatibility layers →
2.
R
Revitfrom $355 · Windows
★ 4.9/ 5 Rating
The de-facto standard for Building Information Modeling (BIM).
View full benchmarks and compatibility layers →
3.
S
SolidWorksfrom $1295 · Windows
★ 4.9/ 5 Rating
The de-facto industry standard for 3D parametric mechanical design.
View full benchmarks and compatibility layers →
4.
A
ArchiCADfrom $1800 · Windows / macOS
★ 4.8/ 5 Rating
The BIM software of choice for design-oriented architects.
View full benchmarks and compatibility layers →
5.
A
AutoCADfrom $255 · Windows / macOS / Web / Android / iOS
★ 4.8/ 5 Rating
The global industrial standard for 2D drafting and 3D modeling.
View full benchmarks and compatibility layers →
6.
PC
PTC Creofrom $2430 · Windows
★ 4.8/ 5 Rating
The original parametric 3D CAD powerhouse.
View full benchmarks and compatibility layers →
7.
SN
Siemens NXfrom $6000 · Windows / Linux
★ 4.8/ 5 Rating
Powerful high-end CAD/CAM/CAE suite for advanced manufacturing.
View full benchmarks and compatibility layers →
8.
AI
Autodesk Inventorfrom $315 · Windows
★ 4.7/ 5 Rating
Professional-grade 3D mechanical design and simulation.
View full benchmarks and compatibility layers →
9.
C
CATIAfrom $4500 · Windows
★ 4.7/ 5 Rating
The high-end PLM standard for Aerospace and Automotive engineering.
View full benchmarks and compatibility layers →
10.
N
nanoCADFreemium · Windows
★ 3.9/ 5 Rating
Professional-grade 2D/3D CAD with native DWG compatibility, powerful API for customization, and competitive pricing.
View full benchmarks and compatibility layers →

Frequently Asked Questions

What is License Borrowing in network CAD setups?: License borrowing allows an engineer to disconnect their laptop from the corporate network and 'borrow' a license from the server for a set number of days (usually up to 30 days). The server locks that seat as checked out, and the engineer can work completely offline in the field. When the borrow period expires, the license automatically returns to the server pool, even if the laptop is not reconnected.
Are floating licenses more expensive than named subscriptions?: Yes, vendors typically charge an upfront premium (often 1.5x to 2x the cost of a standard standalone license) for floating rights. However, because one floating license can easily serve 2 to 3 designers, the total cost for teams larger than 15 engineers is significantly lower than buying individual named subscriptions for everyone.
What license servers do CAD systems use?: The most common local network license server technology is Revenera's FLEXlm (FlexNet Publisher) or LMTools, which uses secure encryption keys to monitor concurrency. Vendors also offer proprietary cloud-based floating servers that do not require local server hardware.

Find compatible design platforms

Run the CAD Matchmaker workspace. Specify your custom team parameters, local OS configurations, and design requirements to generate a complete visual comparison profile.

Launch Matchmaker →