WinDivert
The premium Open Source alternative to Npcap
🎯 Best for:Developers building firewalls, traffic shapers, or VPNs on Windows.
What is WinDivert?
Replaces standard network drivers for user-mode packet interception. It allows applications to capture, modify, or drop network packets using a kernel-level driver.
Tech Stack
CVPN & Network
Why WinDivert?
- • High performance
- • No kernel programming needed
- • Powerful filtering language
Limitations
- • Requires driver signing
- • Windows only
- • Steep learning curve
3/3/2026
Last Update
588
Forks
56
Issues
Other
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to WinDivert instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on Npcap)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%