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Top 23 C++ Security Projects
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x64dbg
An open-source user mode debugger for Windows. Optimized for reverse engineering and malware analysis.
Several months have passed since the last part was posted. Maintainers of x64dbg have continued to improve its functionality. They also opened a task to update the development tools. So in this post, we will continue the analysis based on commit f518e50 code and, where possible, we'll compare it with the commit 9785d1a, which is accurate at the time of writing.
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InfluxDB
InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.
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keepassxc
KeePassXC is a cross-platform community-driven port of the Windows application “Keepass Password Safe”.
Project mention: EU issues US-bound staff with burner phones over spying fears | news.ycombinator.com | 2025-04-14 -
Project mention: SQL powered operating system instrumentation, monitoring, and analytics | news.ycombinator.com | 2024-09-10
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Project mention: NSA Ghidra open-source reverse engineering framework | news.ycombinator.com | 2024-05-28
Rizin[1]/Cutter[2] projects are stored like text files that work well with git, you could try those tools.
[1] https://rizin.re
[2] https://cutter.re
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Wazuh
Wazuh - The Open Source Security Platform. Unified XDR and SIEM protection for endpoints and cloud workloads.
View the Project on GitHub
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Use tools like Falco to monitor for suspicious activities that might indicate the abuse of capabilities.
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CodeRabbit
CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
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zeek
Zeek is a powerful network analysis framework that is much different from the typical IDS you may know.
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nsjail
A lightweight process isolation tool that utilizes Linux namespaces, cgroups, rlimits and seccomp-bpf syscall filters, leveraging the Kafel BPF language for enhanced security.
Project mention: Nsjail: A light-weight process isolation tool for Linux | news.ycombinator.com | 2025-02-04 -
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keystone
Keystone assembler framework: Core (Arm, Arm64, Hexagon, Mips, PowerPC, Sparc, SystemZ & X86) + bindings (by keystone-engine)
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wtf
wtf is a distributed, code-coverage guided, customizable, cross-platform snapshot-based fuzzer designed for attacking user and / or kernel-mode targets running on Microsoft Windows and Linux user-mode (experimental!). (by 0vercl0k)
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usbguard
USBGuard is a software framework for implementing USB device authorization policies (what kind of USB devices are authorized) as well as method of use policies (how a USB device may interact with the system)
Project mention: European govt air-gapped systems breached using custom malware | news.ycombinator.com | 2024-10-09https://usbguard.github.io/ for Linux, amongst others. Mostly to be found in the context of 'anti-forensics' there.
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herpaderping
Process Herpaderping proof of concept, tool, and technical deep dive. Process Herpaderping bypasses security products by obscuring the intentions of a process.
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stegseek
:zap: Worlds fastest steghide cracker, chewing through millions of passwords per second :zap:
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Bareos
Bareos is a cross-network Open Source backup solution (licensed under AGPLv3) which preserves, archives, and recovers data from all major operating systems.
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openvpn3
OpenVPN 3 is a C++ class library that implements the functionality of an OpenVPN client, and is protocol-compatible with the OpenVPN 2.x branch.
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SaaSHub
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C++ Security discussion
C++ Security related posts
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Wazuh: Your Open-Source Security Superhero
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Google to Buy Wiz for $32B
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Google Pixel 4a old firmware is gone, trapping users on the buggy battery update
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Passkey technology is elegant, but it's most definitely not usable security
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Debian opens a can of username worms
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FIDO Alliance publishes new spec to let users move Passkeys across providers
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European govt air-gapped systems breached using custom malware
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A note from our sponsor - SaaSHub
www.saashub.com | 23 Apr 2025
Index
What are some of the best open-source Security projects in C++? This list will help you:
# | Project | Stars |
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1 | x64dbg | 45,888 |
2 | keepassxc | 22,911 |
3 | OSQuery | 22,386 |
4 | cutter | 16,387 |
5 | Wazuh | 12,218 |
6 | monero | 9,391 |
7 | falco | 7,823 |
8 | zeek | 6,807 |
9 | i2pd | 3,430 |
10 | nsjail | 3,192 |
11 | openrasp | 2,856 |
12 | Snort | 2,847 |
13 | edb-debugger | 2,793 |
14 | keystone | 2,388 |
15 | sandboxed-api | 1,688 |
16 | wtf | 1,566 |
17 | concrete | 1,336 |
18 | BLUESPAWN | 1,252 |
19 | usbguard | 1,191 |
20 | herpaderping | 1,128 |
21 | stegseek | 1,103 |
22 | Bareos | 1,060 |
23 | openvpn3 | 1,046 |