Open source focus

Open Source Alternatives to Katalon

18 open source Software Testing options similar to Katalon, 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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Selenium10
Open Source
An open-source framework for automating web browsers for testing and administration tasks.
Open source · Self-hostable
Liblab55
Developer ToolsAustin, United States$42.0M
SDK-as-a-service platform for API providers, offering code generation and SDK management to enhance developer experience.
Open source · Self-hostable
Pulumi66
Infrastructure as CodeSeattle, United States$228.5M
Modern infrastructure as code platform enabling developers to manage cloud resources using familiar programming languages.
Open source · Self-hostable
Gitpod63
Developer ToolsTübingen, Germany$28.0M
Cloud Development Environments for efficient and secure team software development.
Open source · Self-hostable
Logz.io63
EnterpriseTel Aviv, Israel$132.0M
Logz.io provides an observability platform for cloud-native businesses, combining open-source tools for monitoring and security.
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
WireMock53
Enterprise$6.5M
Industry-standard API simulation and mocking platform for reliable software development and testing.
Open source · Self-hostable
Tidelift50
SaaSBoston, United States$15.0M
Platform providing managed open source software with security, maintenance, and licensing assurances for enterprises.
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
keyval29
EnterpriseTel Aviv, Israel
Odigos provides an open-source software solution for developers to enable distributed tracing for their applications using OpenTelemetry and eBPF, accelerating production issue resolution.
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
Nexspence10
Open Source
A free, open-source, self-hosted universal artifact repository manager.
Open source · Self-hostable
Flagon8
Feature Flags
The hub for everything you run: projects, environments, and teams, with feature flags, config, secrets, and events built-in.
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
Jenkins Dev Internal7
Developer Tools
An open-source automation server for building, testing, and deploying software.
Open source
Khook7
Kubernetes
A single static binary that transforms a new Kubernetes cluster into a deployable environment.
Open source
InfluxData58
DatabaseSan Francisco, United States$200.1M
Creator of InfluxDB, an open-source time series database for managing and analyzing high-volume, high-speed data.
Open source · Self-hostable
Solo.io56
Artificial IntelligenceCambridge, USA$174.8M
Enterprise agentic AI orchestration
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
SeleniumAn open-source framework for automating web browsers for testing and administration tasks.	Open Source	Open source · Self-hostable	—	—	10
LiblabSDK-as-a-service platform for API providers, offering code generation and SDK management to enhance developer experience.	Developer Tools	Open source · Self-hostable	Austin, United States	$42.0M	55
PulumiModern infrastructure as code platform enabling developers to manage cloud resources using familiar programming languages.	Infrastructure as Code	Open source · Self-hostable	Seattle, United States	$228.5M	66
GitpodCloud Development Environments for efficient and secure team software development.	Developer Tools	Open source · Self-hostable	Tübingen, Germany	$28.0M	63
Logz.ioLogz.io provides an observability platform for cloud-native businesses, combining open-source tools for monitoring and security.	Enterprise	Open source · Self-hostable	Tel Aviv, Israel	$132.0M	63
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
WireMockIndustry-standard API simulation and mocking platform for reliable software development and testing.	Enterprise	Open source · Self-hostable	—	$6.5M	53
TideliftPlatform providing managed open source software with security, maintenance, and licensing assurances for enterprises.	SaaS	Open source · Self-hostable	Boston, United States	$15.0M	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
keyvalOdigos provides an open-source software solution for developers to enable distributed tracing for their applications using OpenTelemetry and eBPF, accelerating production issue resolution.	Enterprise	Open source · Self-hostable	Tel Aviv, Israel	—	29
fixupx.comThe world's leading software development platform for version control and collaboration.	Web Development	Open source · Self-hostable	San Francisco, United States	—	26
NexspenceA free, open-source, self-hosted universal artifact repository manager.	Open Source	Open source · Self-hostable	—	—	10
FlagonThe hub for everything you run: projects, environments, and teams, with feature flags, config, secrets, and events built-in.	Feature Flags	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
Jenkins Dev InternalAn open-source automation server for building, testing, and deploying software.	Developer Tools	Open source	—	—	7
KhookA single static binary that transforms a new Kubernetes cluster into a deployable environment.	Kubernetes	Open source	—	—	7
InfluxDataCreator of InfluxDB, an open-source time series database for managing and analyzing high-volume, high-speed data.	Database	Open source · Self-hostable	San Francisco, United States	$200.1M	58
Solo.ioEnterprise agentic AI orchestration	Artificial Intelligence	Open source · Self-hostable	Cambridge, USA	$174.8M	56