Open source agent security
Stars are shown for context and are not part of any score. Archived or stalled projects are flagged: several went quiet after their company was acquired. Snapshot taken 2026-09-24.
| Repository | Stars | Contributors | Last push | Status |
|---|---|---|---|---|
| promptfoo/promptfoo | 25,404 | 350 | 2026-09-24 | Active |
| Portkey-AI/gateway | 13,071 | 123 | 2026-05-25 | Active |
| data-privacy-stack/presidio | 11,010 | 216 | 2026-09-23 | Active |
| modelcontextprotocol/inspector | 10,937 | 140 | 2026-09-24 | Active |
| NVIDIA/garak | 9,341 | 137 | 2026-09-16 | Active |
| guardrails-ai/guardrails | 7,443 | 79 | 2026-09-22 | Active |
| NVIDIA-NeMo/Guardrails | 7,184 | 128 | 2026-09-21 | Active |
| openfga/openfga | 5,846 | 117 | 2026-09-24 | Active |
| agentgateway/agentgateway | 5,015 | 260 | 2026-09-23 | Active |
| microsoft/PyRIT | 4,534 | 175 | 2026-09-23 | Active |
| IBM/mcp-context-forge | 4,522 | 177 | 2026-09-23 | Active |
| meta-llama/PurpleLlama | 4,405 | 73 | 2026-08-18 | Active |
| protectai/llm-guard | 3,208 | 24 | 2026-07-08 | Archived |
| snyk/agent-scan | 3,081 | 22 | 2026-09-23 | Active |
| confident-ai/deepteam | 2,939 | 27 | 2026-09-21 | Active |
| docker/mcp-gateway | 1,581 | 38 | 2026-09-23 | Active |
| cisco-ai-defense/mcp-scanner | 1,074 | 26 | 2026-09-19 | Active |