Open source focus

Open Source Alternatives to B12

11 open source AI Website Builder options similar to B12, 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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LLMStack15
Agentic AI
Open-source, no-code platform for building and deploying AI agents, workflows, and generative AI applications.
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
Flectra27
Open SourceAhmedabad, India
Open-source ERP and CRM software to streamline business operations and enhance productivity.
Open source · Self-hostable
Dolibarr18
Open Source
Open-source ERP and CRM web suite for businesses of all sizes.
Open source · Self-hostable
Lastsaas2
SaaS Boilerplate
LastSaaS is an open-source SaaS boilerplate designed for AI-assisted development, offering a complete foundation for launching SaaS businesses.
Open source
OpenOps53
EnterpriseSan Francisco, United States$125K
No-code, open-source cloud automation platform for FinOps and custom solutions.
Open source · Self-hostable
Kantu26
Workflow Automation
Open-source browser extension and RPA software for automating web and desktop workflows.
Open source · Self-hostable
Faremeter22
Fintech
Open-source framework enabling autonomous AI agents to make frictionless web3 payments via web2 infrastructure.
Open source · Self-hostable
ERPNext20
Enterprise SoftwareBangalore, India
Open-source ERP system for small and medium-sized businesses.
Open source · Self-hostable
Camunda Inc.19
Process AutomationBerlin, Germany
Company
Open source · Self-hostable
WP Job Manager16
WordPress PluginDublin, Ireland
A free WordPress job board plugin
Open source

Company	Sector	License	HQ	Funding	Score
LLMStackOpen-source, no-code platform for building and deploying AI agents, workflows, and generative AI applications.	Agentic AI	Open source · Self-hostable	—	—	15
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
FlectraOpen-source ERP and CRM software to streamline business operations and enhance productivity.	Open Source	Open source · Self-hostable	Ahmedabad, India	—	27
DolibarrOpen-source ERP and CRM web suite for businesses of all sizes.	Open Source	Open source · Self-hostable	—	—	18
LastsaasLastSaaS is an open-source SaaS boilerplate designed for AI-assisted development, offering a complete foundation for launching SaaS businesses.	SaaS Boilerplate	Open source	—	—	2
OpenOpsNo-code, open-source cloud automation platform for FinOps and custom solutions.	Enterprise	Open source · Self-hostable	San Francisco, United States	$125K	53
KantuOpen-source browser extension and RPA software for automating web and desktop workflows.	Workflow Automation	Open source · Self-hostable	—	—	26
FaremeterOpen-source framework enabling autonomous AI agents to make frictionless web3 payments via web2 infrastructure.	Fintech	Open source · Self-hostable	—	—	22
ERPNextOpen-source ERP system for small and medium-sized businesses.	Enterprise Software	Open source · Self-hostable	Bangalore, India	—	20
Camunda Inc.Company	Process Automation	Open source · Self-hostable	Berlin, Germany	—	19
WP Job ManagerA free WordPress job board plugin	WordPress Plugin	Open source	Dublin, Ireland	—	16