Open Source Alternatives to Antithesis

Sponsors of OpenWALDO, a community-driven initiative for open-source AI training data, and provider of enterprise Linux, HPC, and AI infrastructure software.

Open source

Agentic endpoint security for AI coding, providing visibility, governance, and real-time protection.

Open source

An open-source framework for building, operating, and benchmarking Multimodal Language Model (MLM) agents across diverse environments.

Open source · Self-hostable

An applied cybersecurity research lab using AI agents to autonomously discover, exploit, and verify software vulnerabilities.

Open source · Self-hostable

Causari provides structured causal knowledge to AI agents for tracing cause and effect, finding historical patterns, and searching for impactful events.

Open source · Self-hostable

Octopus Deploy provides a unified platform for continuous delivery, automating deployments, runbooks, and operations for modern applications.

Open source · Self-hostable

Cloud-based browser API for AI agents, simplifying web automation with anti-bot protection and session persistence.

Open source · Self-hostable

Track experiments, validate models, and collaborate with confidence using Skore, the methodology layer for AI coding tools.

Open source

BenchFlow is a frontier environment lab that builds environments for AI agents to learn and be evaluated on real computer work.

Open source

Cua provides an open-source framework and cloud desktops for AI agents to control operating systems and desktop applications across Linux, Windows, macOS, and Android.

Open source

Open-source platform for programmatically authoring, scheduling, and monitoring data pipelines.

Open source · Self-hostable

Experimental open-source framework for building self-building autonomous agents with a novel function framework.

Open source · Self-hostable

Policy guardrails for coding agents to block dangerous tool calls before they are fired.

Open source

An autonomous developer pipeline that builds applications phase by phase against a Git repository.

Open source · Self-hostable

Container-native virtualization for Kubernetes, enabling VMs and containers to run side-by-side.

Open source · Self-hostable

An open-source lifecycle management tool delivered as a single Go binary to guide ideas through capture, requirements, planning, development, testing, and release.

Open source

A production-ready, lightweight open-source virtualization platform for environments from homelabs to hyperscale infrastructure.

Open source

Open-core company building tools for modern backend engineers to ship faster and better.

Open source · Self-hostable

ARMO provides an open-source Kubernetes security platform, Kubescape, for end-to-end security from development to production.

Open source · Self-hostable

Open-source autonomous AI agent platform that automates complex digital workflows.

Open source · Self-hostable

Open-source platform for managing secrets and sensitive data for developers.

Open source · Self-hostable

An open-source platform for building and running AI coding agents that automate software development tasks.

Open source · Self-hostable

Building general-purpose AI for a future of material abundance.

Open source · Self-hostable

Infrastructure for the robotics data loop.

Open source · Self-hostable

A global non-profit foundation dedicated to improving software security through open community collaboration.

Open source · Self-hostable

Open-source infrastructure for coding agents, enabling AI to plan, generate, and deploy software autonomously.

Open source · Self-hostable

Open-source AI agent framework for automating tasks across messaging platforms and software systems.

Open source · Self-hostable

An open-source red-teaming toolkit for testing the security of LLM-powered agents, auditing prompt injection, memory poisoning, and tool abuse.

Open source

A service written as a plain Go function, supervised by lesiw.io/proc for reliability and distribution.

Open source

Open-source framework enabling autonomous AI agents to make frictionless web3 payments via web2 infrastructure.

Open source · Self-hostable

Linuxed provides an AI-powered platform for Linux system administration, automation, and infrastructure management.

Open source · Self-hostable

An open-source platform for developing AI-powered autonomous software engineering agents.

Open source · Self-hostable

A free, open-source, self-hosted universal artifact repository manager.

Open source · Self-hostable

An open-source framework for automating web browsers for testing and administration tasks.

Open source · Self-hostable

Independent defensive security research focused on detection engineering, threat analysis, and open-source tooling for defenders.

Open source

Open-source AI platform for securely deploying intelligent agents, private enterprise search, and complex document workflows on an organization's own data.

Open source · Self-hostable

An open-source, autonomous AI agent for complex tasks using terminal, browser, and editor interactions.

Open source · Self-hostable