--- title: "casdoor vs RulesEngine" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/casdoor-casdoor-vs-microsoft-rulesengine" tools: ["casdoor-casdoor", "microsoft-rulesengine"] --- # casdoor vs RulesEngine *GraphCanon updated Jul 15, 2026* ## Verdict Pick casdoor when casdoor is primarily Go; RulesEngine is C#; pick RulesEngine when rulesEngine is primarily C#; casdoor is Go. [casdoor](https://casdoor.ai) reports 14k GitHub stars, 1.7k forks, and 100 open issues, last pushed Jul 10, 2026. [RulesEngine](https://microsoft.github.io/RulesEngine/) has 4.3k stars, 615 forks, and 53 open issues, last pushed Jul 3, 2026. Figures are from public GitHub metadata via [casdoor's repository](https://github.com/casdoor/casdoor) and [RulesEngine's repository](https://github.com/microsoft/RulesEngine). | | [casdoor](/tools/casdoor-casdoor.md) | [RulesEngine](/tools/microsoft-rulesengine.md) | | --- | --- | --- | | Tagline | An open-source Agent-first Identity and Access Management (IAM) / LLM MCP & agent gateway and auth server | A fast and reliable .NET Rules Engine with extensive Dynamic expression support | | Stars | 13,923 | 4,308 | | Forks | 1,734 | 615 | | Open issues | 100 | 53 | | Language | Go | C# | | Adopt for | Casdoor is an open-source solution for identity and access management (IAM), with robust agent-first capabilities that integrate with various authentication protocols including OAuth, OIDC, SAML, CAS, LDAP, SCIM, WebAuth | - | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | MIT | | Categories | AI Agents, Evaluation & Observability | Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [casdoor](/tools/casdoor-casdoor.md) | [RulesEngine](/tools/microsoft-rulesengine.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Active (82%) | | Days since push | 0d | 12d | | Open issues (now) | 100 | 53 | | Full report | [trust report](/tools/casdoor-casdoor/trust.md) | [trust report](/tools/microsoft-rulesengine/trust.md) | ## Decision facts: casdoor - **Adopt for:** Casdoor is an open-source solution for identity and access management (IAM), with robust agent-first capabilities that integrate with various authentication protocols including OAuth, OIDC, SAML, CAS, LDAP, SCIM, WebAuth ## Choose when ### Choose casdoor if… - casdoor is primarily Go; RulesEngine is C#. - License: casdoor is Apache-2.0, RulesEngine is MIT. - Tags unique to casdoor: agent, agi, ai-gateway, auth. - Also covers AI Agents. - casdoor ships Docker support for self-hosted deployment. - When you require a comprehensive IAM tool that supports multiple authentication methods such as OAuth, OIDC, SAML, CAS, LDAP, and more. ### Choose RulesEngine if… - RulesEngine is primarily C#; casdoor is Go. - License: RulesEngine is MIT, casdoor is Apache-2.0. - Tags unique to RulesEngine: c#, dotnet, engine, expression-evaluator. ## When NOT to use casdoor - If your project requires proprietary technology exclusivity and cannot utilize open-source tools like Casdoor licensed under Apache-2.0. - When the depth of integration with specific authentication methods (e.g., some advanced SAML configurations) is critical, and you find that other competitors offer more specialized or better-detailed/ - +customizable versions of support for those methods. - If your environment strictly requires closed-source components for security reasons, thus Casdoor would not be a suitable choice due to its open nature. ## When NOT to use RulesEngine - Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. ## Common questions ### What is the difference between casdoor and RulesEngine? casdoor: An open-source Agent-first Identity and Access Management (IAM) / LLM MCP & agent gateway and auth server. RulesEngine: A fast and reliable .NET Rules Engine with extensive Dynamic expression support. See the comparison table for live GitHub stats and shared categories. ### When should I choose casdoor over RulesEngine? Choose casdoor over RulesEngine when casdoor is primarily Go; RulesEngine is C#; License: casdoor is Apache-2.0, RulesEngine is MIT; Tags unique to casdoor: agent, agi, ai-gateway, auth; Also covers AI Agents; casdoor ships Docker support for self-hosted deployment; When you require a comprehensive IAM tool that supports multiple authentication methods such as OAuth, OIDC, SAML, CAS, LDAP, and more. ### When should I choose RulesEngine over casdoor? Choose RulesEngine over casdoor when RulesEngine is primarily C#; casdoor is Go; License: RulesEngine is MIT, casdoor is Apache-2.0; Tags unique to RulesEngine: c#, dotnet, engine, expression-evaluator. ### When should I avoid casdoor? If your project requires proprietary technology exclusivity and cannot utilize open-source tools like Casdoor licensed under Apache-2.0. When the depth of integration with specific authentication methods (e.g., some advanced SAML configurations) is critical, and you find that other competitors offer more specialized or better-detailed/ +customizable versions of support for those methods. If your environment strictly requires closed-source components for security reasons, thus Casdoor would not be a suitable choice due to its open nature. ### When should I avoid RulesEngine? Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. ### Is casdoor or RulesEngine more popular on GitHub? casdoor has more GitHub stars (13,923 vs 4,308). Stars measure visibility, not whether either tool fits your constraints. ### Are casdoor and RulesEngine open source? Yes - both are open-source projects on GitHub (casdoor: Apache-2.0, RulesEngine: MIT). ### Where can I find alternatives to casdoor or RulesEngine? GraphCanon lists graph-backed alternatives at [casdoor alternatives](/tools/casdoor-casdoor/alternatives) and [RulesEngine alternatives](/tools/microsoft-rulesengine/alternatives) ([casdoor markdown twin](/tools/casdoor-casdoor/alternatives.md), [RulesEngine markdown twin](/tools/microsoft-rulesengine/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/casdoor-casdoor-vs-microsoft-rulesengine.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, casdoor or RulesEngine? casdoor: Very active. RulesEngine: Active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for casdoor and RulesEngine? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [casdoor trust report](/tools/casdoor-casdoor/trust); [RulesEngine trust report](/tools/microsoft-rulesengine/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=casdoor-casdoor`](/api/graphcanon/graph?tool=casdoor-casdoor) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_