Open source focus

Open Source Alternatives to Stone Software

29 open source Software Development options similar to Stone Software, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

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TanStack50
Software DevelopmentSan Francisco, Canada$1.0M
Developer tools for building modern web applications.
Open source · Self-hostable
vxtwitter.com31
Web DevelopmentSan Francisco, United States
The world's leading platform for software development and version control, enabling collaboration and code hosting for millions of developers.
Open source · Self-hostable
Ubuntu70
Operating SystemsLondon, United Kingdom$63.0M
A popular open-source Linux distribution.
Open source · Self-hostable
Elementor69
WebsiteRamat Gan, Israel$65.8M
Elementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.
Open source · Self-hostable
Codefresh62
EnterpriseBrisbane, Australia$42.0M
Octopus Deploy provides a unified platform for continuous delivery, automating deployments, runbooks, and operations for modern applications.
Open source · Self-hostable
Appwrite58
EnterpriseSan Francisco, United States$37.0M
Open-source backend-as-a-service platform for building scalable applications.
Open source · Self-hostable
Odigos56
Enterprise$13.0M
Open-source project for instant distributed tracing and metrics using eBPF and OpenTelemetry.
Open source · Self-hostable
MetalBear56
Software DevelopmentSan Francisco, United States$12.5M
Open-core company building tools for modern backend engineers to ship faster and better.
Open source · Self-hostable
KiloClaw54
Artificial Intelligence
A managed, private, and production-grade environment for OpenClaw, offering access to over 500 AI models and essential tools.
Open source · Self-hostable
All-Hands AI49
Agentic AIBoston, United States$5.0M
An open-source platform for building and running AI coding agents that automate software development tasks.
Open source · Self-hostable
Open Source Endowment45
Open SourceSan Francisco, United States$750K
A nonprofit endowment aiming to permanently solve the funding problem for open-source software maintainers.
Open source · Self-hostable
OWASP38
CybersecurityRaleigh, USA
A global non-profit foundation dedicated to improving software security through open community collaboration.
Open source · Self-hostable
fixupx.com26
Web DevelopmentSan Francisco, United States
The world's leading software development platform for version control and collaboration.
Open source · Self-hostable
Node.js26
Software Development
An open-source, cross-platform JavaScript runtime environment.
Open source · Self-hostable
ChartDB26
Software DevelopmentTel Aviv, Israel
Visualize, edit, and collaborate on database schemas instantly with a powerful DB diagram editor.
Open source · Self-hostable
Pretext18
Web Development
A zero-dependency TypeScript library for multiline text measurement and layout entirely in userland, bypassing DOM performance bottlenecks.
Open source · Self-hostable
Cloud Native Computing Foundation15
Cloud ComputingIrvine, United States
The Cloud Native Computing Foundation (CNCF) is an open-source software foundation that aims to make cloud-native computing universal and sustainable.
Open source · Self-hostable
esbuild14
Developer Tools
Extremely fast JavaScript bundler and minifier for the web, written in Go.
Open source · Self-hostable
I3
i313
Software Development
A highly configurable and efficient tiling window manager for X11.
Open source · Self-hostable
Eclipse Foundation10
Open SourceBrussels, Belgium
A non-profit organization stewarding open source software projects, communities, and collaborative industry ecosystems.
Open source · Self-hostable
WebDriverIO10
Developer Tools
An open-source, Node.js-based framework for web and mobile automation testing.
Open source · Self-hostable
.NET8
Software DevelopmentRedmond, USA
A free, cross-platform, open-source developer platform for building many types of applications.
Open source · Self-hostable
Harikrut Technolab8
WordPress Plugins
WordPress & WooCommerce plugin studio building open-source and custom plugins.
Open source
TestCafe7
Developer Tools
An open-source Node.js tool for automated web testing, simplifying end-to-end test creation and execution across browsers.
Open source · Self-hostable
Nextdoctor6
Developer Tools
Live memory monitoring, diagnostics, and auto-tuning for your Next.js dev server.
Open source
Cadenceos6
Operating System
CadenceOS is an open-source operating system designed for web-based applications and cloud-native environments, offering a secure and flexible platform.
Open source · Self-hostable
Ucoder2
Developer ToolsWest Bengal, India
UCoder provides privacy-first developer tools and services, including an analytics solution and web development.
Open source
Boringstack
Developer Tools
Pre-configured GitHub templates for building modern web applications with UI, API, and infrastructure.
Open source · Self-hostable
RU
Rubish
Software Development
A UNIX shell written entirely in Ruby, offering deep integration with Ruby code.
Open source

Company	Sector	License	HQ	Funding	Score
TanStackDeveloper tools for building modern web applications.	Software Development	Open source · Self-hostable	San Francisco, Canada	$1.0M	50
vxtwitter.comThe world's leading platform for software development and version control, enabling collaboration and code hosting for millions of developers.	Web Development	Open source · Self-hostable	San Francisco, United States	—	31
UbuntuA popular open-source Linux distribution.	Operating Systems	Open source · Self-hostable	London, United Kingdom	$63.0M	70
ElementorElementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.	Website	Open source · Self-hostable	Ramat Gan, Israel	$65.8M	69
CodefreshOctopus Deploy provides a unified platform for continuous delivery, automating deployments, runbooks, and operations for modern applications.	Enterprise	Open source · Self-hostable	Brisbane, Australia	$42.0M	62
AppwriteOpen-source backend-as-a-service platform for building scalable applications.	Enterprise	Open source · Self-hostable	San Francisco, United States	$37.0M	58
OdigosOpen-source project for instant distributed tracing and metrics using eBPF and OpenTelemetry.	Enterprise	Open source · Self-hostable	—	$13.0M	56
MetalBearOpen-core company building tools for modern backend engineers to ship faster and better.	Software Development	Open source · Self-hostable	San Francisco, United States	$12.5M	56
KiloClawA managed, private, and production-grade environment for OpenClaw, offering access to over 500 AI models and essential tools.	Artificial Intelligence	Open source · Self-hostable	—	—	54
All-Hands AIAn open-source platform for building and running AI coding agents that automate software development tasks.	Agentic AI	Open source · Self-hostable	Boston, United States	$5.0M	49
Open Source EndowmentA nonprofit endowment aiming to permanently solve the funding problem for open-source software maintainers.	Open Source	Open source · Self-hostable	San Francisco, United States	$750K	45
OWASPA global non-profit foundation dedicated to improving software security through open community collaboration.	Cybersecurity	Open source · Self-hostable	Raleigh, USA	—	38
fixupx.comThe world's leading software development platform for version control and collaboration.	Web Development	Open source · Self-hostable	San Francisco, United States	—	26
Node.jsAn open-source, cross-platform JavaScript runtime environment.	Software Development	Open source · Self-hostable	—	—	26
ChartDBVisualize, edit, and collaborate on database schemas instantly with a powerful DB diagram editor.	Software Development	Open source · Self-hostable	Tel Aviv, Israel	—	26
PretextA zero-dependency TypeScript library for multiline text measurement and layout entirely in userland, bypassing DOM performance bottlenecks.	Web Development	Open source · Self-hostable	—	—	18
Cloud Native Computing FoundationThe Cloud Native Computing Foundation (CNCF) is an open-source software foundation that aims to make cloud-native computing universal and sustainable.	Cloud Computing	Open source · Self-hostable	Irvine, United States	—	15
esbuildExtremely fast JavaScript bundler and minifier for the web, written in Go.	Developer Tools	Open source · Self-hostable	—	—	14
I3i3A highly configurable and efficient tiling window manager for X11.	Software Development	Open source · Self-hostable	—	—	13
Eclipse FoundationA non-profit organization stewarding open source software projects, communities, and collaborative industry ecosystems.	Open Source	Open source · Self-hostable	Brussels, Belgium	—	10
WebDriverIOAn open-source, Node.js-based framework for web and mobile automation testing.	Developer Tools	Open source · Self-hostable	—	—	10
.NETA free, cross-platform, open-source developer platform for building many types of applications.	Software Development	Open source · Self-hostable	Redmond, USA	—	8
Harikrut TechnolabWordPress & WooCommerce plugin studio building open-source and custom plugins.	WordPress Plugins	Open source	—	—	8
TestCafeAn open-source Node.js tool for automated web testing, simplifying end-to-end test creation and execution across browsers.	Developer Tools	Open source · Self-hostable	—	—	7
NextdoctorLive memory monitoring, diagnostics, and auto-tuning for your Next.js dev server.	Developer Tools	Open source	—	—	6
CadenceosCadenceOS is an open-source operating system designed for web-based applications and cloud-native environments, offering a secure and flexible platform.	Operating System	Open source · Self-hostable	—	—	6
UcoderUCoder provides privacy-first developer tools and services, including an analytics solution and web development.	Developer Tools	Open source	West Bengal, India	—	2
BoringstackPre-configured GitHub templates for building modern web applications with UI, API, and infrastructure.	Developer Tools	Open source · Self-hostable	—	—	—
RURubishA UNIX shell written entirely in Ruby, offering deep integration with Ruby code.	Software Development	Open source	—	—	—