Best Free AI Guardrails Software of 2026

We are builders on a mission. We're obsessed with building products that make the world a more secure place. Over the course of our careers we've built countless enterprise products at both startups and companies like Splunk, Cisco, Symantec, and McAfee. In every case we had to write security features from scratch. Pangea offers the first Security Platform as a Service (SPaaS) which unifies the fragmented world of security into a simple set of APIs for developers to call directly into their apps.

Codacy is an end-to-end DevSecOps platform designed to enforce code quality, security, and compliance across modern development workflows. It integrates seamlessly with IDEs, repositories, and CI/CD pipelines to provide continuous analysis and real-time feedback. The platform performs static and dynamic testing, dependency scanning, and infrastructure checks to identify vulnerabilities early and throughout the software lifecycle. Codacy’s AI Guardrails feature ensures that both human-written and AI-generated code meet organizational standards by detecting risks and automatically fixing issues. It also offers automated pull request reviews, quality metrics, and test coverage tracking to improve development efficiency. Centralized policies allow organizations to maintain consistent standards across teams and projects. With support for multiple programming languages and easy integration into existing workflows, Codacy simplifies secure coding practices. It helps teams reduce manual review effort while improving code reliability and maintainability. By combining security, quality, and AI protection, Codacy empowers teams to ship faster with confidence.

Akto is an open source, instant API security platform that takes only 60 secs to get started. Akto is used by security teams to maintain a continuous inventory of APIs, test APIs for vulnerabilities and find runtime issues. Akto offers tests for all OWASP top 10 and HackerOne Top 10 categories including BOLA, authentication, SSRF, XSS, security configurations, etc. Akto's powerful testing engine runs variety of business logic tests by reading traffic data to understand API traffic pattern leading to reduced false positives. Akto can integrate with multiple traffic sources - Burpsuite, AWS, postman, GCP, gateways, etc.

LLM Guard offers a suite of protective measures, including sanitization, harmful language detection, data leakage prevention, and defense against prompt injection attacks, ensuring that your engagements with LLMs are both safe and secure. It is engineered for straightforward integration and deployment within real-world environments. Though it is fully functional right from the start, we want to emphasize that our team is continuously enhancing and updating the repository. The essential features require only a minimal set of libraries, and as you delve into more sophisticated capabilities, any additional necessary libraries will be installed automatically. We value a transparent development approach and genuinely welcome any contributions to our project. Whether you're assisting in bug fixes, suggesting new features, refining documentation, or promoting our initiative, we invite you to become a part of our vibrant community and help us grow. Your involvement can make a significant difference in shaping the future of LLM Guard.

Guardrails play an essential role in the upkeep of AI systems, and LangWatch serves to protect both you and your organization from the risks of disclosing sensitive information, prompt injection, and potential AI misbehavior, thereby safeguarding your brand from unexpected harm. For businesses employing integrated AI, deciphering the interactions between AI and users can present significant challenges. To guarantee that responses remain accurate and suitable, it is vital to maintain consistent quality through diligent oversight. LangWatch's safety protocols and guardrails effectively mitigate prevalent AI challenges, such as jailbreaking, unauthorized data exposure, and irrelevant discussions. By leveraging real-time metrics, you can monitor conversion rates, assess output quality, gather user feedback, and identify gaps in your knowledge base, thus fostering ongoing enhancement. Additionally, the robust data analysis capabilities enable the evaluation of new models and prompts, the creation of specialized datasets for testing purposes, and the execution of experimental simulations tailored to your unique needs, ensuring that your AI system evolves in alignment with your business objectives. With these tools, businesses can confidently navigate the complexities of AI integration and optimize their operational effectiveness.

Lunary serves as a platform for AI developers, facilitating the management, enhancement, and safeguarding of Large Language Model (LLM) chatbots. It encompasses a suite of features, including tracking conversations and feedback, analytics for costs and performance, debugging tools, and a prompt directory that supports version control and team collaboration. The platform is compatible with various LLMs and frameworks like OpenAI and LangChain and offers SDKs compatible with both Python and JavaScript. Additionally, Lunary incorporates guardrails designed to prevent malicious prompts and protect against sensitive data breaches. Users can deploy Lunary within their VPC using Kubernetes or Docker, enabling teams to evaluate LLM responses effectively. The platform allows for an understanding of the languages spoken by users, experimentation with different prompts and LLM models, and offers rapid search and filtering capabilities. Notifications are sent out when agents fail to meet performance expectations, ensuring timely interventions. With Lunary's core platform being fully open-source, users can choose to self-host or utilize cloud options, making it easy to get started in a matter of minutes. Overall, Lunary equips AI teams with the necessary tools to optimize their chatbot systems while maintaining high standards of security and performance.

Overseer AI serves as a sophisticated platform aimed at ensuring that content generated by artificial intelligence is not only safe but also accurate and in harmony with user-defined guidelines. The platform automates the enforcement of compliance by adhering to regulatory standards through customizable policy rules, while its real-time content moderation feature actively prevents the dissemination of harmful, toxic, or biased AI outputs. Additionally, Overseer AI supports the debugging of AI-generated content by rigorously testing and monitoring responses in accordance with custom safety policies. It promotes policy-driven governance by implementing centralized safety regulations across all AI interactions and fosters trust in AI systems by ensuring that outputs are safe, accurate, and consistent with brand standards. Catering to a diverse array of sectors such as healthcare, finance, legal technology, customer support, education technology, and ecommerce & retail, Overseer AI delivers tailored solutions that align AI responses with the specific regulations and standards pertinent to each industry. Furthermore, developers benefit from extensive guides and API references, facilitating the seamless integration of Overseer AI into their applications while enhancing the overall user experience. This comprehensive approach not only safeguards users but also empowers businesses to leverage AI technologies confidently.

LangDB provides a collaborative, open-access database dedicated to various natural language processing tasks and datasets across multiple languages. This platform acts as a primary hub for monitoring benchmarks, distributing tools, and fostering the advancement of multilingual AI models, prioritizing transparency and inclusivity in linguistic representation. Its community-oriented approach encourages contributions from users worldwide, enhancing the richness of the available resources.

Alice is an enterprise-grade AI security and trust platform designed to protect applications, agents, and foundation models from adversarial threats. Formerly known as ActiveFence, the company leverages its proprietary Rabbit Hole intelligence engine, built on billions of real-world toxic and abusive data samples, to deliver unmatched safety coverage. Alice protects more than 50% of global online experiences, monitoring over 1 billion daily AI-human interactions across 120+ languages. Its WonderSuite platform provides comprehensive safeguards, including pre-launch stress testing with WonderBuild, dynamic runtime guardrails through WonderFence, and continuous automated red-teaming via WonderCheck. These solutions help organizations defend against prompt injection, jailbreaks, model exploitation, and policy misalignment risks. By aligning defenses with regulatory and compliance requirements, Alice supports responsible AI governance and enterprise risk management. Trusted by leading tech companies and model labs, Alice empowers businesses to deploy GenAI systems securely and scale innovation without fear.