# basil00/WinDivert

WinDivert: Windows Packet Divert

Repository: https://github.com/basil00/WinDivert
Canonical: https://ross.abutalabs.com/products/windivert
Homepage: https://reqrypt.org/windivert.html
Language: C
License: NOASSERTION
License Family: other
Topics: windivert, packet-capture, packet-sniffer, firewall, divert-sockets, network-programming, traffic-analysis
Last push: 2023-03-15T23:09:58+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5493, "days_push": 1267, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3266, forks 604 (observed 2026-08-28T04:07:52.952344+00:00)

## What it is
WinDivert is a user-mode packet interception library for Windows that allows applications to capture, modify, drop, and re-inject network packets via a kernel-mode driver. It provides a simple C API with a high-level filtering language and supports loopback traffic and full IPv6.

## Use cases
- capture and dump network packets on windows
- build a user-mode firewall application
- sniff and analyze network traffic
- redirect tcp streams to a local proxy
- implement a nat or vpn tunnel on windows
- filter or block urls at the packet level
- track network flows and socket operations

## When to choose
- you need user-mode packet interception, modification, or re-injection on windows
- you are building firewalls, sniffers, NATs, VPNs, or tunneling tools for windows
- you need loopback (localhost) traffic capture or full IPv6 support
- you want a simple C API with a high-level packet filter language

## When to avoid
- you are targeting linux, macos, or other non-windows platforms
- you only need passive packet capture without modification (simpler tools like pcap may suffice)
- you cannot install signed kernel drivers or lack administrator privileges
- you need a managed-language library without native interop

## Facets
- artifact type: library
- maturity: stable
- function: networking, security, proxy, developer-tools
- domain: networking, security, windows, developer-tools
- platform: windows, cpp, c
- tags: packet-capture, packet-sniffer, firewall, kernel-driver, traffic-analysis, vpn, nat, ids, tunneling, ipv6, loopback

## Member repositories
- basil00/WinDivert (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:52.952344+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:23:10.746921+00:00, confidence not recorded.
  - readme: https://github.com/basil00/WinDivert (fetched 2026-08-28T04:07:52.952344+00:00, sha 5f4b385f758c)
  - homepage: https://reqrypt.org/windivert.html (fetched 2026-08-29T09:36:34.216598+00:00, sha d059c51134d9)
  - site_page: https://reqrypt.org/windivert-faq.html (fetched 2026-08-29T09:36:34.227223+00:00, sha 6a438c304694)
- Data as of 2026-08-30T08:39:29.467469+00:00.