Open Source Linux Security Software - Page 8
Sort By:
Security Software for Linux
View 747 business solutions-
Demo Series - Small Business Backup By VeeamWatch this on-demand demo series and learn how to protect your Microsoft 365 data with clear, simple, actionable steps that are easy to implement for businesses of all sizes.
-
$300 Free Credits to Build on Google CloudPut your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
-
1
SpiderFoot
Open Source Intelligence Automation.
SpiderFoot is an open source intelligence automation tool. Its goal is to automate the process of gathering intelligence about a given target, which may be an IP address, domain name, hostname or network subnet. SpiderFoot can be used offensively, i.e. as part of a black-box penetration test to gather information about the target or defensively to identify what information your organisation is freely providing for attackers to use against you. -
2
spyware
A complete SpyWare.
A complete local and configurable spyware. This spyware is a python package compiled for Windows. This spyware is not a virus, it does not export any data to a server. Data is stored locally only. Do not use it for illegal purposes. - Save keyboard events - Record from microphone - Save files metadata in CSV file - Screenshots - Pictures from Webcam - Domains and IP addresses from metadata - Save clipboard -
3
Cerbos
Cerbos is the open core, language-agnostic authorization solution
Cerbos is an authorization layer that evolves with your product. It enables you to define powerful, context-aware access control rules for your application resources in simple, intuitive YAML policies; managed and deployed via your Git-ops infrastructure. It provides highly available APIs to make simple requests to evaluate policies and make dynamic access decisions for your application. Decouple authorization management from your core code using the stateless Cerbos solution. Focus on delivering exceptional products, not maintaining the authorization infrastructure. Context-aware role definitions and attribute-based access control. Implement adaptable, granular security policies that exceed standard role-based access control. -
4
Instaloader
Download pictures (or videos) along with their captions
Instaloader is a mature open-source utility for downloading and archiving Instagram content along with rich metadata. It enables users to retrieve posts, stories, reels, highlights, profile pictures, and associated information such as captions, comments, timestamps, and geotags. The tool supports both public and permitted private content when proper authentication is provided, making it useful for research, digital archiving, and social media analysis. Instaloader can be run as a simple command-line tool or used programmatically through its Python module, offering flexibility for automation workflows. It includes smart update mechanisms that resume interrupted downloads and fetch only new media to maintain efficient archives. The project is widely adopted by investigators and analysts who need structured Instagram data collection. In essence, Instaloader provides a robust and highly configurable pipeline for Instagram content retrieval. -
Earn up to 16% annual interest with Nexo.Generate interest, borrow against your crypto, and trade a range of cryptocurrencies — all in one platform. Geographic restrictions, eligibility, and terms apply.
-
5
InterceptSuite
A TLS MITM proxy for Non-HTTP traffic, with support for TLS upgrades
InterceptSuite is a cross‑platform, SOCKS5‑based MITM proxy specially designed to intercept, inspect, analyze, and manipulate encrypted network traffic at the TCP/TLS layer. It goes beyond HTTP‑focused tools like Burp Suite and ZAP by providing universal TLS interception—including STARTTLS and non‑HTTP protocols—offering deep visibility and control for security testing and debugging. InterceptSuite bridges this gap by providing a universal TLS interception engine that works with any protocol, giving security researchers the tools they need to analyze, understand, and test encrypted communications effectively. With Python extension support, users can add custom protocol dissection capabilities tailored to their specific needs. -
6
ntfy.sh
Send push notifications to your phone or desktop using PUT/POST
ntfy is a simple HTTP-based pub-sub notification service for sending push notifications to phones and desktops. It lets users publish messages to topics using basic HTTP requests, scripts, curl commands, or application integrations. The service can be used through the public ntfy.sh instance or self-hosted on private infrastructure. It is useful for server alerts, cron job results, monitoring notifications, CI/CD updates, and personal automation. ntfy includes web, mobile, and command-line clients, making it accessible across different environments. Its main value is providing lightweight, open-source notifications without forcing users into a heavy messaging platform or paid push service. -
7
zapret2
Anti-dpi software
zapret2 is a standalone anti-DPI toolkit designed to alter network traffic behavior without depending on external proxy servers. It targets censorship, throttling, and protocol filtering performed through deep packet inspection. The project supports Linux, OpenWrt-oriented embedded routers, FreeBSD, OpenBSD, and Windows. Its nfqws2 engine retains protocol recognition, reassembly, decryption, profiles, host lists, IP sets, and basic filtering. Traffic-manipulation strategies are moved out of fixed C logic and into Lua scripts. This design makes DPI-response techniques more flexible and easier to adapt as filtering methods change. -
8
The Digital Forensic Tool Testing (DFTT) project creates test images for digital forensic acquisition and analysis tools. These images can be used by a tool developers and owners to test their software.
-
9
AirSnort is a wireless LAN (WLAN) tool which cracks encryption keys on 802.11b WEP networks. AirSnort operates by passively monitoring transmissions, computing the encryption key when enough packets have been gathered.
-
Build Agents and Models on One PlatformGemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
-
10
KeyStore Explorer
Free GUI replacement for Java command-line utilities keytool/jarsigner
KeyStore Explorer is a free GUI replacement for the Java command-line utilities keytool and jarsigner. -
11
BrowserBox
Remote isolated browser API for security
Remote isolated browser API for security, automation visibility and interactivity. Run-on our cloud, or bring your own. Full scope double reverse web proxy with a multi-tab, mobile-ready browser UI frontend. Plus co-browsing, advanced adaptive streaming, secure document viewing and more! But only in the Pro version. BrowserBox is a full-stack component for a web browser that runs on a remote server, with a UI you can embed on the web. BrowserBox lets your provide controllable access to web resources in a way that's both more sandboxed than, and less restricted than, traditional web <iframe> elements. Build applications that need cross-origin access, while delivering complex user stories that benefit from an encapsulated browser abstraction. Since the whole stack is written in JavaScript you can easily extend it to suit your needs. The technology that puts unrestricted browser capabilities within reach of a web app has never before existed in the open. -
12
Impacket
A collection of Python classes for working with network protocols
Impacket is a collection of Python classes designed for working with network protocols. It was primarily created in the hopes of alleviating some of the hindrances associated with the implementation of networking protocols and stacks, and aims to speed up research and educational activities. It provides low-level programmatic access to packets, and the protocol implementation itself for some of the protocols, like SMB1-3 and MSRPC. It features several protocols, including Ethernet, IP, TCP, UDP, ICMP, IGMP, ARP, NMB and SMB1, SMB2 and SMB3 and more. Impacket's object oriented API makes it easy to work with deep hierarchies of protocols. It can construct packets from scratch, as well as parse them from raw data. -
13
Pomerium
Pomerium is an identity and context-aware access proxy
Secure, context-aware access that just works. Access internal resources securely. Implement zero trust. Achieve compliance. All without the headache of a VPN. For teams that prefer a hosted solution while keeping data governance. For organizations that need advanced scaling, access control, and governance capabilities. IT and developers need a scalable access control solution to keep users productive, happy, and secure. Pomerium uses identity and context to ensure secure access to internal applications, servers, and infrastructure even from untrusted networks. Pomerium adds authentication and authorization to any application or server, giving IT Management a centralized panel for organization-wide control. Assert compliance in your current architecture without giving up control over data tenancy. Pomerium supports your infrastructure and can be deployed in all environments: cloud, hybrid, or on-prem. From AWS to Kubernetes and more, your internal and 3rd-party apps are covered. -
14
Tamper Dev
Extension that allows you to intercept and edit HTTP/HTTPS requests
If you are a developer, you can use Tamper Dev to debug your websites, or if you are a pentester, you can use it to search for security vulnerabilities by inspecting the HTTP traffic from your browser. Unlike most other extensions, Tamper Dev allows you to intercept, inspect and modify the requests before they are sent to the server. This extension provides functionality similar to Burp Proxy, MITM Proxy, OWASP ZAP, Tamper Data, and Postman Proxy, but without the need of additional software, with full support of HTTPS connections, and trivial to set-up (just install). -
15
Trape
OSINT tool for tracking users and analyzing browser data online
Trape is an open source OSINT analysis and research tool designed to track and analyze users on the internet in real time. The project focuses on demonstrating how web browsers can reveal sensitive information about users while interacting with websites and online services. It provides researchers, security professionals, and organizations with a platform for studying how attackers could gather intelligence through social engineering techniques. The tool can clone websites and monitor interactions in order to collect data from visitors, allowing investigators to observe user behavior and session activity. Trape was originally created to educate the public about how large internet services may obtain confidential information such as session status or browser details without users realizing it. Over time, it has evolved into a research platform that helps analysts track cybercriminal activity and study online tracking mechanisms. -
16
privacy.sexy
Open-source tool to enforce privacy & security best-practices
Enforce privacy & security best practices on Windows, macOS, and Linux, because privacy is sexy. Regularly applying your configuration with privacy.sexy is recommended, especially after each new release and major operating system updates. Each version updates scripts to enhance stability, privacy, and security. -
17
A KeePass plugin that downloads and stores favicons. A favicon is the little icon / logo used to identify many websites, typically displayed in the browser's address bar, bookmark list and on tabs.
-
18
The goal of this project is to create a GnuPG front end for Mac OS X. To that extent, it will make installing GnuPG on OS X easier and provide inter application services to access GPG. Also, GPGME wrapper in ObjC will be done.
-
19
Headlamp
A Kubernetes web UI that is fully-featured, user-friendly
Out of the box, Headlamp is a fully functional Kubernetes UI. By leveraging its powerful plugin system, builders can shape Headlamp to fit their bespoke use cases, products, and environments. Headlamp adapts not only to a user's cluster configuration (multiple or single clusters, permissions-based UI, etc.), but its powerful plugin system allows builders to customize the experience with new functionality that fits their products. Headlamp’s plugin system makes it possible to create custom experiences with minimal effort; add/extend views, customize branding, etc. Headlamp adapts to a user’s cluster permissions. It checks RBAC and displays actions like delete or edit only if the user has permission to do so. Keeping with Headlamp’s goal of supporting a fully customizable experience, it can be run as a web app, desktop app, or both. -
20
Hikari
LLVM Obfuscator
All releases prior to and including LLVM8 are signed using this PGP Key from Naville. Verifiable on his Keybase. Security is not now, and will never be based purely on Obscurity. The "Security Companies" might say so to sell more of their products. But no, binary obfuscation won't magically fix all your exploits and bugs, (If not introducing more). Designing an Obfuscator is hard, and keeping the source open definitely leaks the pattern to crackers which could potentially make the crackers' life easier if they have the right skillset. While every reasonable attempt has been made in Hikari to reduce such patterns from appearing, however, with overkill weapons like symbolic execution, binary obfuscation can still be defeated much easier, even so-called VM-based obfuscation. DOI 10.1145/2991079.2991114 explained this in great detail. I would implement a few anti-SE mechanisms in the future in an attempt to cause (even) more trouble to attackers, though. -
21
Mitaka
Browser extension for fast OSINT searches and IOC investigation
Mitaka is a browser extension designed to streamline Open Source Intelligence (OSINT) investigations by enabling quick searches and scans directly from the browser. It allows security researchers, analysts, and investigators to easily examine various indicators of compromise (IoCs) such as IP addresses, domains, URLs, hashes, email addresses, and more. Instead of manually copying and pasting suspicious indicators into multiple intelligence platforms, users can simply highlight a value on any webpage and access multiple OSINT services through a context menu. Mitaka automatically detects the type of indicator and generates appropriate search options for relevant threat intelligence services. Mitaka also includes a refanging capability that converts obfuscated indicators, such as example[.]com or hxxp://example.com, into valid formats that can be analyzed immediately. -
22
Ray Tracing in One Weekend Book Series
The Ray Tracing in One Weekend series of books
The Ray Tracing in One Weekend series of books are now available to the public for free online. They are now released under the CC0 license. This means that they are as close to public domain as we can get. (While that also frees you from the requirement of providing attribution, it would help the overall project if you could point back to this web site as a service to other users.) These books are formatted for printing directly from your browser, where you can also (on most browsers) save them as PDF. In Ray Tracing in One Weekend, you will build a simple brute-force path tracer. Continuing with Ray Tracing: The Next Week, you will add textures, volumes (like fog), rectangles, instances, lights, and support for lots of objects using a bounding volume hierarchy (BVH). Finally, with Ray Tracing: The Rest Of Your Life, we'll dive into the math of creating a very serious ray tracer. -
23
proxy.py
Utilize all available CPU cores for accepting new client connections
proxy.py is made with performance in mind. By default, proxy.py will try to utilize all available CPU cores to it for accepting new client connections. This is achieved by starting AcceptorPool which listens on configured server port. Then, AcceptorPool starts Acceptor processes (--num-acceptors) to accept incoming client connections. Alongside, if --threadless is enabled, ThreadlessPool is setup which starts Threadless processes (--num-workers) to handle the incoming client connections. Each Acceptor process delegates the accepted client connection to a threadless process via Work class. Currently, HttpProtocolHandler is the default work class. HttpProtocolHandler simply assumes that incoming clients will follow HTTP specification. Specific HTTP proxy and HTTP server implementations are written as plugins of HttpProtocolHandler. -
24
testssl.sh
Testing TLS/SSL encryption anywhere on any port
testssl.sh is a free command-line tool that checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more. testssl.sh is free and open-source software. You can use it under the terms of GPLv2, please review the License before using it. Works for Linux, Mac OSX, FreeBSD, NetBSD and WSL/MSYS2/Cygwin out of the box, no need to install or configure something, no gems, CPAN, pip or the like. OpenBSD only needs bash to be postinstalled. You can test any SSL/TLS enabled and STARTTLS service, not only webservers at port 443. Several command line options help you to run your test and configure your output. If a particular check cannot be performed because of a missing capability on your client side, you'll get a warning. You can look at the code, see what's going on and you can change it. -
25
xxHash
Extremely fast non-cryptographic hash algorithm
xxHash is an extremely fast non-cryptographic hash algorithm, working at RAM speed limit. It is proposed in four flavors (XXH32, XXH64, XXH3_64bits and XXH3_128bits). The latest variant, XXH3, offers improved performance across the board, especially on small data. It successfully completes the SMHasher test suite which evaluates collision, dispersion and randomness qualities of hash functions. Code is highly portable, and hashes are identical across all platforms (little / big endian). Performance on large data is only one part of the picture. Hashing is also very useful in constructions like hash tables and bloom filters. In these use cases, it's frequent to hash a lot of small data (starting at a few bytes). Algorithm's performance can be very different for such scenarios, since parts of the algorithm, such as initialization or finalization, become fixed cost. The impact of branch misprediction also becomes much more present.
