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Cybersecurity of open source software
Open-source software security is the measure of assurance or guarantee in the freedom from danger and risk inherent to an open-source software system.
Open-source_software_security
Industry forum on software security
The Open Source Security Foundation (OpenSSF) is a cross-industry forum for collaborative improvement of open-source software security. Part of the Linux
Open Source Security Foundation
Open_Source_Security_Foundation
Software with publicly available source code
Open-source software (OSS) is computer software whose source code is publicly available, allowing users to use, study, modify, and distribute it — in contrast
Open-source_software
Freely licensed software with open code
and open-source software (FOSS) is software available under a license that gives users the right to use, share, modify, and distribute the software — modified
Free_and_open-source_software
of free and open-source software (FOSS) packages, computer software licensed under free software licenses and open-source licenses. Software that fits the
List of free and open-source software packages
List_of_free_and_open-source_software_packages
Business model monetizing commercial open-source software
The open-core model is a business model for the monetization of open-source software to which a for-profit company provides significant development support
Open-core_model
Freely accessible creation and refinement of computer programs
Open-source software development (OSSD) is the process by which open-source software, or similar software whose source code is publicly available, is developed
Open-source software development
Open-source_software_development
Free/open-source software – the source availability model used by free and open-source software (FOSS) – and closed source are two approaches to the distribution
Comparison of open-source and closed-source software
Comparison_of_open-source_and_closed-source_software
Social movement
collaboration. Free Software Movement of India International Centre for Free and Open Source Software (ICFOSS) Free Software and Open Source Foundation for
Free_software_movement
Open collaboration movement supporting open-source licenses
The open-source software movement is a social movement that supports the use of open-source licenses for some or all software, as part of the broader
Open-source_software_movement
Business models that can be compatible with open source software projects
Software companies focusing on the development of open-source software (OSS) employ a variety of business models to solve the challenge of making profits
Business models for open-source software
Business_models_for_open-source_software
Policy document by the Open Source Initiative
The Open Source Definition (OSD) is a policy document published by the Open Source Initiative in 1998. Derived from the Debian Free Software Guidelines
The_Open_Source_Definition
accessible either publicly or privately. They are often used by open-source software projects and other multi-developer projects to maintain revision
Comparison of source-code-hosting facilities
Comparison_of_source-code-hosting_facilities
Software released under a license restricting rights
are non-free. Proprietary software may either be closed-source software or source-available software. Some open-source software can be described as proprietary
Proprietary_software
Publishing digital resources with their source files
commonly associated with open-source software, software released with its source code. The concept has also been applied beyond software to other digital resources
Open_source
run on the Android platform which meet guidelines for free software and open-source software. The API column is used to describe which versions of Android
List of free and open-source Android applications
List_of_free_and_open-source_Android_applications
Concept of open-source software applied to AI
of open collaboration in software creation, including AI models and algorithms.[better source needed][better source needed] In the 1990s, open-source software
Open-source artificial intelligence
Open-source_artificial_intelligence
This is a comparison of notable free and open-source configuration management software, suitable for tasks like server configuration, orchestration and
Comparison of open-source configuration management software
Comparison_of_open-source_configuration_management_software
Software licensed to be freely used, modified and distributed
Free software, libre software, libreware sometimes known as freedom-respecting software is computer software distributed under open-source licenses that
Free_software
Examining the embedded components of software
analyzing custom-built software applications to detect embedded open-source software and detect if they are up-to-date, contain security flaws, or have licensing
Software_composition_analysis
Computer security organization
the Open Worldwide Application Security Project (formerly Open Web Application Security Project), is an online community that publishes open-source information
OWASP
Relationship between the technology company and the open source software paradigm
Microsoft, a tech company historically known for its opposition to the open source software paradigm, turned to embrace the approach in the 2010s. From the 1970s
Microsoft_and_open_source
Open source search engine
visualization dashboard for that search engine. It is an open-source project developed by the OpenSearch Software Foundation (a Linux Foundation project) written
OpenSearch_(software)
notable software packages which were published as free and open-source software, or into the public domain, but were made proprietary software, or otherwise
List of formerly open-source or free software
List_of_formerly_open-source_or_free_software
Open-source network analysis and threat detection software
Suricata is an open-source network analysis and threat detection software. The features include intrusion detection system (IDS) and intrusion prevention
Suricata_(software)
Measures taken to improve the security of an application
Application security (AppSec) includes all tasks that introduce a secure software development life cycle to development teams. Its final goal is to improve
Application_security
The following is a list of notable software packages and applications licensed under an open-source license or in the public domain for use in the health
List of open-source health software
List_of_open-source_health_software
(HOST) program, which promotes open security. Open Solutions Alliance Open Source Initiative "DON Open Source Software Guidance". United States Navy. Retrieved
Open Source Software Institute
Open_Source_Software_Institute
Canadian-American computer scientist and cybersecurity executive
cybersecurity, open-source software security and software supply chain risk. He served as general manager of the Open Source Security Foundation (OpenSSF), a
Omkhar_Arasaratnam
cellphones. There is an open-source baseband project, OsmocomBB. Generally, the phones included on this list contain copyleft software other than the Linux
List of open-source mobile phones
List_of_open-source_mobile_phones
Non-profit organization promoting open-source software
adopted The Open Source Definition (OSD) for open-source software, based on the Debian Free Software Guidelines. They also established the Open Source Initiative
Open_Source_Initiative
Open source approach to computer security
Open security is the use of open source philosophies and methodologies to approach computer security and other information security challenges. Traditional
Open_security
Security information and event management system
OSSIM (Open Source Security Information Management) was formerly an open source security information and event management system, integrating a selection
OSSIM
aid, financial aid, technical aid, governance, etc. of free and open-source software (FOSS) as a whole, or of one or more specific FOSS projects. For
List of free and open-source software organizations
List_of_free_and_open-source_software_organizations
Monetary reward for completing a project task
An open-source bounty is a monetary reward for completing a task in an open-source software project. Bounties are usually offered as an incentive for fixing
Open-source_bounty
These tables compare free software / open-source operating systems. Where not all of the versions support a feature, the first version which supports it
Comparison of open-source operating systems
Comparison_of_open-source_operating_systems
Computer security software
OpenVAS and Greenbone Sustainable Resilience. Metasploit Project OpenVAS Security Administrator Tool for Analyzing Networks (SATAN) SAINT (software)
Nessus_(software)
Data and process for mutating a software resource to a desired state
patch is data for modifying an existing software resource such as a program or a file, often to fix bugs and security vulnerabilities. To patch is also the
Patch_(computing)
Software discovery and hosting platform for B2B and open source software
SourceForge is a web service that provides a centralized software discovery platform, including an online platform for managing and hosting open-source
SourceForge
Password management system in macOS
is free, open source software released under the terms of the APSL-2.0. The command line equivalent of Keychain Access is /usr/bin/security. The keychain
Keychain_(software)
Open source security software project
global collective of software developers, designers, advocates, activists, and trainers who develop open-source mobile security software and operating system
Guardian_Project_(software)
Open standard for software bill of materials
specification is recognized as the international open standard for security, license compliance, and other software supply chain artifacts as ISO/IEC 5962:2021
Software Package Data Exchange
Software_Package_Data_Exchange
Operating system for mobile devices
based on a modified version of the Linux kernel and other free and open-source software. First released in 2008, Android is the world's most widely used
Android_(operating_system)
Operating system
OpenBSD is a security-focused, free software, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created OpenBSD
OpenBSD
Free reverse engineering tool developed by the National Security Agency
Ghidra (/ˈɡiːdrə/ GEE-druh) is a free and open source reverse engineering tool developed by the National Security Agency (NSA) of the United States. The
Ghidra
Exploitable weakness in a computer system
compromise its security. Despite a system administrator's best efforts to achieve complete correctness, virtually all hardware and software contain bugs
Vulnerability (computer security)
Vulnerability_(computer_security)
Tools used to make software
components used to build a software artifact, including any open source and proprietary software components. It is the software analogue to the traditional
Software_supply_chain
Finding flaws in the security of information systems
OSS Scanning - Open Source Software Scanning (see Open-source software security) RASP - Runtime Application Self-Protection SCA - Software Composition Analysis
Security_testing
Swiss software development company
develops open source software and commercial software for continuous code quality and code security. Sonar is a company that develops open source software and
Sonar_(company)
Overview of and topical guide to free software
proliferation Software patents and free software SCO–Linux controversies Mozilla software rebranded by Debian Open-source software security Trusted Computing
Outline_of_free_software
Free optical character recognition engine
free software, released under the Apache License. Originally developed by Hewlett-Packard as proprietary software in the 1980s, it was released as open source
Tesseract_(software)
Belgian international nonprofit association (AISBL)
Eclipse open source software development community. It has over 300 members, and represents the world's largest sponsored collection of Open Source projects
Eclipse_Foundation
Systemless root solution for Android
Magisk is a free and open-source software used for userspace systemless rooting of Android devices, developed by topjohnwu. Magisk supports devices running
Magisk_(software)
Open-source Java security framework
"sheeroh", a Japanese word for castle (Japanese: 城)) is an open source software security framework that performs authentication, authorization, cryptography
Apache_Shiro
Cybersecurity regulation in the European Union
The revised bill includes an exception for open-source software. This was welcomed by many open source organizations, though Debian criticized its effect
Cyber_Resilience_Act
Instructions a computer can execute
(COTS) or open-source software. Software quality assurance is typically a combination of manual code review by other engineers and automated software testing
Software
Program automating data flow between software
"NiagaraFiles" software previously developed by the US National Security Agency (NSA), which is also the source of a part of its present name – NiFi. It was open-sourced
Apache_NiFi
Linux security sandbox tool
a security sandbox tool designed to enhance the security of applications by isolating them in a sandbox environment. It is a free and open-source software
Firejail
Software that controls computer-graphics hardware
A free and open-source graphics device driver is a software stack which controls computer-graphics hardware and supports graphics-rendering application
Free and open-source graphics device driver
Free_and_open-source_graphics_device_driver
AI Infrastructure Identity company
built-in proxy. Teleport began as an open-source library used by the Gravity project to enable secure software deployments into restricted and regulated
Teleport_(software)
Instant messaging client
implemented a security by design approach, with security and privacy as core values.[citation needed] Wire is 100% open source with its source code available
Wire_(software)
Decentralised chat and collaboration software
Element (formerly Riot and Vector) is a free and open-source software instant messaging client implementing the Matrix protocol. Element was originally
Element_(software)
Free and open-source disk encryption utility
VeraCrypt is a free and open-source utility for on-the-fly encryption (OTFE). The software can create a virtual encrypted disk that works just like a regular
VeraCrypt
Software engineering agent developed by OpenAI
needed] In March 2026, OpenAI introduced Codex Security, an application-security agent designed to identify and fix software vulnerabilities. By March
OpenAI_Codex_(AI_agent)
Open-source intrusion prevention system
2013. It is free and open-source software with a GNU General Public License version 2. In 2009, Snort entered InfoWorld's Open Source Hall of Fame as one
Snort_(software)
AI-dependent computer programming
maintainability, and an increased risk of introducing security vulnerabilities in the resulting software. The concept refers to a coding approach that relies
Vibe_coding
Process of changing installed software to newer versions
allow for security updates to be applied quickly and widely. Update managers of Linux such as Synaptic allow users to update all software installed on
Software_update
Subculture of individuals
academic movement unrelated to computer security and most visibly associated with free software, open source and demoscene. It also has a hacker ethic
Hacker_culture
Open-source platform for continuous inspection of code quality
Advanced Security, lists known vulnerabilities (CVEs) in third-party dependencies, generates software bill of materials (SBOMs) and enforces open source license
SonarQube
Source-available software licensing scheme by Microsoft
the Open Source Initiative as open source licenses and are regarded by the Free Software Foundation as free software licenses. Other shared source licenses
Shared_Source_Initiative
Acronym for a common web hosting solution
computing magazine, as he demonstrated that a bundle of free and open-source software "could be a feasible alternative to expensive commercial packages"
LAMP_(software_bundle)
American software company
Fortify Software, later known as Fortify Inc., is a California-based software security vendor, founded in 2003 and acquired by Hewlett-Packard in 2010
Fortify_Software
Implementation of TLS in Rust
Rustls (pronounced "rustles") is an open-source implementation of the Transport Layer Security (TLS) cryptographic protocol written in the Rust programming
Rustls
Patched software backdoor
code on an affected system through OpenSSH, a set of networking utilities. The backdoor was discovered by software developer Andres Freund. It was later
XZ_Utils_backdoor
An open-source voting system (OSVS), also known as open-source voting (or OSV), is a voting system that uses open-source software (and/or hardware) that
Open-source_voting_system
German organization promoting open source software
network of companies and organizations developing, building and using open source software. OSBA focusses on German OSS topics and is organized within APELL
Open_Source_Business_Alliance
Minho Municipality began switching to free and open-source software. IOSSPL is a free and open source software used for public libraries in Romania. In 2017
Adoption of free and open-source software by public institutions
Adoption_of_free_and_open-source_software_by_public_institutions
Nonprofit foundation
X/Open in 1996, to become The Open Group. Despite the similarities in name, OSF was unrelated to the Free Software Foundation (FSF), or the Open Source
Open_Software_Foundation
Canadian software company
Open Text Corporation (styled as opentext) is a global software company that develops and sells information management software. OpenText, headquartered
OpenText
Belgian security company
Gitleaks, joined Aikido Security and started the open-source project Betterleaks. Aikido Security develops application security software that includes code
Aikido_Security
Encrypted messaging application
Free and open-source software portal SimpleX Chat is a free and open-source cross-platform end-to-end encrypted instant messaging app and console application
SimpleX_Chat
Open-source web application security scanner
listed in the 2015 InfoWorld Bossie award for "The best open source networking and security software". Some of the built-in features include: An intercepting
ZAP_(software)
Open software in the military industry refers to the use of open-source software (OSS) applications, frameworks, and tools in various military contexts
Open Software in the Military Industry
Open_Software_in_the_Military_Industry
Protection of computer systems from information disclosure, theft or damage
Open source approach to computer security Outline of computer security – Overview of and topical guide to computer security OWASP – Computer security
Computer_security
Free and open-source office software suite
Apache OpenOffice is an open-source office productivity software suite developed by the Apache Software Foundation. It was created as a successor project
Apache_OpenOffice
Free software data integrity tool
Open Source Tripwire is a free software security and data integrity tool for monitoring and alerting on specific file change(s) on a range of systems originally
Open_Source_Tripwire
Annual software engineering conference
Free and Open source Software Developers' European Meeting (FOSDEM) is an annual software engineering conference. It is non-commercial and volunteer-organized
FOSDEM
was made open source and became OpenOffice.org. Sun continues developing the commercial version which periodically integrates the open source code with
List_of_spreadsheet_software
develop open source solutions locally. Due to its role in promoting Open Source software in wider business and public applications, the Open Source Day Conference
Open_Source_Day
Vulnerability scanner for large language models
license was later updated to Apache 2.0. The software is now homed at Nvidia, where it lives as an open-source project with long-term support, and has been
Garak_(software)
Set of computer programs providing encrypted communication sessions
proprietary software. Although source code is available for the original SSH, various restrictions are imposed on its use and distribution. OpenSSH was created
OpenSSH
Public directory of free and open source software (FOSS)
services suite and online community platform that aims to index the open-source software development community. It was founded by former Microsoft managers
Open_Hub
Hardware authentication token
hardware and software of Nitrokey are open-source. The free software and open hardware enables independent parties to verify the security of the device
Nitrokey
European open standard think tank
OpenForum Europe (OFE) is a European open source software and open standard not-for-profit think tank. Its key objective is to contribute to achieve an
OpenForum_Europe
Category of cloud computing
Miriam (2014). "OpenSaaS: Using Free and Open Source Software as Software-as-a-Service". International Free and Open Source Software Law Review. 6: 61–68
Software_as_a_service
American application security company
Black Duck Software is a private company that develops and markets software and services for application security. Founded in 2002 by Doug Levin, it is
Black_Duck_Software
Open-source autonomous AI assistant software
turned vibe coder Peter Steinberger, OpenClaw was first published in November 2025 under the name Warelay. The software was derived from Clawd (now Molty)
OpenClaw
| Home automation | Open Source Software | Security | Metrics". "Mark J Cox | Home automation | Open Source Software | Security | Metrics". Notes Review
Modedit
Unix-based network security monitoring framework
Free and open-source software portal Zeek is a free and open-source software network analysis framework. Vern Paxson began development work on Zeek in
Zeek
systems. For SCM software not suitable for source code, see Comparison of open-source configuration management software. The following table contains relatively
Comparison of version-control software
Comparison_of_version-control_software
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