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 2026-10-14.
| Repository | Stars | Contributors | Last push | Status |
|---|---|---|---|---|
| promptfoo/promptfoo | 26,000 | 390 | 2026-10-14 | Active |
| Portkey-AI/gateway | 13,189 | 123 | 2026-05-25 | Active |
| data-privacy-stack/presidio | 11,329 | 216 | 2026-10-09 | Active |
| modelcontextprotocol/inspector | 11,075 | 140 | 2026-10-14 | Active |
| NVIDIA/garak | 9,575 | 145 | 2026-10-14 | Active |
| guardrails-ai/guardrails | 7,520 | 79 | 2026-10-09 | Active |
| NVIDIA-NeMo/Guardrails | 7,298 | 129 | 2026-10-14 | Active |
| openfga/openfga | 5,973 | 120 | 2026-10-13 | Active |
| agentgateway/agentgateway | 5,345 | 273 | 2026-10-14 | Active |
| pomerium/pomerium | 5,044 | 104 | 2026-10-14 | Active |
| IBM/mcp-context-forge | 4,633 | 180 | 2026-10-14 | Active |
| cerbos/cerbos | 4,623 | 35 | 2026-10-14 | Active |
| microsoft/PyRIT | 4,621 | 202 | 2026-10-14 | Active |
| meta-llama/PurpleLlama | 4,431 | 73 | 2026-10-12 | Active |
| protectai/llm-guard | 3,217 | 24 | 2026-07-08 | Archived |
| snyk/agent-scan | 3,138 | 22 | 2026-10-14 | Active |
| confident-ai/deepteam | 3,014 | 27 | 2026-10-01 | Active |
| docker/mcp-gateway | 1,600 | 38 | 2026-09-23 | Active |
| cisco-ai-defense/mcp-scanner | 1,089 | 27 | 2026-10-14 | Active |