Project Summary
qBittorrent is an advanced, multi-platform Bittorrent client written in C++/Qt5, using the libtorrent-rasterbar library by Arvid Norberg. qBittorrent is fast, stable, and light, maintaining consistent feature parity with uTorrent. It supports Unicode and provides a robust and extensible integrated search engine. UPnP-port-forwarding/NAT-PMP, encryption (Vuze compatible), FAST extension (mainline) and PeX support (uTorrent compatible) are all supported "out-of-the-box," without the need for extensive user configuration. The GUI is advanced without being cumbersome and a Web UI is also provided for remote control of transfers and access to the integrated search. qBittorrent aims to meet the needs of most users while using as little CPU and memory as possible.
In a Nutshell, qBittorrent...
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has a well established, mature codebase
maintained by a very large development team
with increasing Y-O-Y commits -
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took an estimated 316 years of effort (COCOMO model)
starting with its first commit in September, 2006
ending with its most recent commit 1 day ago
GNU General Public License v2.0 or later
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryJul 31 2025 — Aug 30 2025
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12 Month SummaryAug 30 2024 — Aug 30 2025
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Static Analysis ( Generated by Coverity Scan for qbittorrent/qBittorrent )
Repository URL: https://github.com/qbittorrent/qBittorrent
Version: 2c6c61c
- 2025-08-01
- Last Analyzed
- 942,634
- Lines of Code Analyze
- 1.37
- Defect Density
Defects by status for current build
- 494
- Total defects
- 94
- Outstanding
- 394
- Fixed
CWE Top 25 defects
| ID | CWE-Name | Number of Defects |
|---|---|---|
| 190 | Integer Overflow or Wraparound | 8 |