Open source focus
Open Source Alternatives to Reality Defender
60 open source Cybersecurity options similar to Reality Defender, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Each profile notes license and self-hosting where we have it.
Nagomi Security63CybersecuritySan Francisco, United States$30.0MOpen source
TandemTrace35Agentic AIOpen source
Vibranium Dome23AI AgentsOpen source · Self-hostable
0sec11CybersecurityTel Aviv, IsraelOpen source · Self-hostable
Aitrustapp4Trust and SafetyOpen source
- ExploitcheckCybersecurity
Open source
Forter85FintechNew York, United States$550.0MOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
SafeBreach69EnterpriseTel Aviv, Israel$140.5MOpen source
Zenity66CybersecuritySan Francisco, United States$59.5MOpen source
Perception Point65EnterpriseTel Aviv, Israel$38.0MOpen source
Coro65EnterpriseNew York, United States$235.0MOpen source
TwelveLabs64Video IntelligenceSan Francisco, United States$68.0MOpen source
Protect AI64CybersecuritySeattle, United States$105.0MOpen source
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Oligo Security63EnterpriseTel Aviv, Israel$70.0MOpen source · Self-hostable
CyCognito63EnterprisePalo Alto, United States$153.0MOpen source
Intezer63EnterpriseTel Aviv, Israel$58.0MOpen source
Artemis Global Technologies62CybersecuritySan Francisco, United States$85.0MOpen source
Spacelift61Infrastructure as CodeWarsaw, Poland$73.6MOpen source
Seemplicity61EnterpriseTel Aviv, Israel$182.0MOpen source
MetricStream61Governance, Risk, and Compliance (GRC)San Jose, United States$65.0MOpen source
Shufti Pro61Identity VerificationLondon, United Kingdom$21.0MOpen source
Netography60CybersecurityColumbia, United States$35.0MOpen source
Netskope58CybersecuritySanta Clara, United States$1.5BOpen source
Ray Security57EnterpriseSan Francisco, United States$11.0MOpen source
Token Security57EnterpriseSan Francisco, United States$27.0MOpen source
Boost Security57CybersecuritySan Francisco, USA$12.0MOpen source
Backslash Security57CybersecurityTel Aviv, Israel$27.0MOpen source
MANIFEST56LegalNew York, United States$23.0MOpen source
- BRBria56Generative AITel Aviv, Israel$130.5M
Open source
HoneyHive55CybersecuritySan Francisco, United States$10.0MOpen source
XPOZ55MediaTel Aviv, Israel$1.5MOpen source
Mobb55CybersecurityTel Aviv, Israel$5.4MOpen source
KTrust54EnterpriseTel Aviv, Israel$5.3MOpen source
Knostic54Cybersecurity$14.3MOpen source
Enso Security52EnterpriseTel Aviv, Israel$6.0MOpen source
OpenSpace50SpaceTechSan Francisco, United StatesOpen source
Visual Layer50DatabaseTel Aviv, Israel$7.0MOpen source · Self-hostable
Torch Security49CybersecurityLeawood, United StatesOpen source
Oplane49CybersecurityMalmö, Sweden$4.5MOpen source
Argon Security47EnterpriseTel Aviv, IsraelOpen source
MalantAI46CybersecurityTel Aviv, IsraelOpen source
- APApproov45CybersecurityLondon, United Kingdom$8.6M
Open source
BlockSec45Web3Singapore, Singapore$1.0MOpen source
Mayhem Security45CybersecurityBethesda, United StatesOpen source
Scribe Security43Supply ChainTel Aviv, IsraelOpen source
Slauth.io43EnterpriseAshburn, United States$1.5MOpen source · Self-hostable
Cyviation43CybersecurityTel Aviv, Israel$4.0MOpen source
Microsoft43Operating SystemRedmond, United StatesOpen source
Hacktron AI Inc.43CybersecuritySan Francisco, United States$1.0MOpen source
Paart40AI GovernanceSan Francisco, United StatesOpen source
Codavel38CybersecurityPorto, PortugalOpen source
SOC Prime36CybersecurityBoston, United States$21.5MOpen source
Dustico34EnterpriseTel Aviv, IsraelOpen source · Self-hostable
Virtual Vision34Spatial Computing & XRMontreal, CanadaOpen source
Secuvy32CybersecurityOttawa, CanadaOpen source
Bell Cyber28CybersecurityTel Aviv, IsraelOpen source
GeeTest CAPTCHA25CybersecurityShanghai, ChinaOpen source
Palo Alto Networks Cortex XDR23CybersecuritySanta Clara, United StatesOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Nagomi Security | Cybersecurity | Open source | San Francisco, United States | $30.0M | 63 | |
| TandemTrace | Agentic AI | Open source | — | — | 35 | |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 | |
| 0sec | Cybersecurity | Open source · Self-hostable | Tel Aviv, Israel | — | 11 | |
| Aitrustapp | Trust and Safety | Open source | — | — | 4 | |
| Cybersecurity | Open source | — | — | — | ||
| Forter | Fintech | Open source | New York, United States | $550.0M | 85 | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| SafeBreach | Enterprise | Open source | Tel Aviv, Israel | $140.5M | 69 | |
| Zenity | Cybersecurity | Open source | San Francisco, United States | $59.5M | 66 | |
| Perception Point | Enterprise | Open source | Tel Aviv, Israel | $38.0M | 65 | |
| Coro | Enterprise | Open source | New York, United States | $235.0M | 65 | |
| TwelveLabs | Video Intelligence | Open source | San Francisco, United States | $68.0M | 64 | |
| Protect AI | Cybersecurity | Open source | Seattle, United States | $105.0M | 64 | |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 | |
| Oligo Security | Enterprise | Open source · Self-hostable | Tel Aviv, Israel | $70.0M | 63 | |
| CyCognito | Enterprise | Open source | Palo Alto, United States | $153.0M | 63 | |
| Intezer | Enterprise | Open source | Tel Aviv, Israel | $58.0M | 63 | |
| Artemis Global Technologies | Cybersecurity | Open source | San Francisco, United States | $85.0M | 62 | |
| Spacelift | Infrastructure as Code | Open source | Warsaw, Poland | $73.6M | 61 | |
| Seemplicity | Enterprise | Open source | Tel Aviv, Israel | $182.0M | 61 | |
| MetricStream | Governance, Risk, and Compliance (GRC) | Open source | San Jose, United States | $65.0M | 61 | |
| Shufti Pro | Identity Verification | Open source | London, United Kingdom | $21.0M | 61 | |
| Netography | Cybersecurity | Open source | Columbia, United States | $35.0M | 60 | |
| Netskope | Cybersecurity | Open source | Santa Clara, United States | $1.5B | 58 | |
| Ray Security | Enterprise | Open source | San Francisco, United States | $11.0M | 57 | |
| Token Security | Enterprise | Open source | San Francisco, United States | $27.0M | 57 | |
| Boost Security | Cybersecurity | Open source | San Francisco, USA | $12.0M | 57 | |
| Backslash Security | Cybersecurity | Open source | Tel Aviv, Israel | $27.0M | 57 | |
| MANIFEST | Legal | Open source | New York, United States | $23.0M | 56 | |
| BRBria | Generative AI | Open source | Tel Aviv, Israel | $130.5M | 56 | |
| HoneyHive | Cybersecurity | Open source | San Francisco, United States | $10.0M | 55 | |
| XPOZ | Media | Open source | Tel Aviv, Israel | $1.5M | 55 | |
| Mobb | Cybersecurity | Open source | Tel Aviv, Israel | $5.4M | 55 | |
| KTrust | Enterprise | Open source | Tel Aviv, Israel | $5.3M | 54 | |
| Knostic | Cybersecurity | Open source | — | $14.3M | 54 | |
| Enso Security | Enterprise | Open source | Tel Aviv, Israel | $6.0M | 52 | |
| OpenSpace | SpaceTech | Open source | San Francisco, United States | — | 50 | |
| Visual Layer | Database | Open source · Self-hostable | Tel Aviv, Israel | $7.0M | 50 | |
| Torch Security | Cybersecurity | Open source | Leawood, United States | — | 49 | |
| Oplane | Cybersecurity | Open source | Malmö, Sweden | $4.5M | 49 | |
| Argon Security | Enterprise | Open source | Tel Aviv, Israel | — | 47 | |
| MalantAI | Cybersecurity | Open source | Tel Aviv, Israel | — | 46 | |
| APApproov | Cybersecurity | Open source | London, United Kingdom | $8.6M | 45 | |
| BlockSec | Web3 | Open source | Singapore, Singapore | $1.0M | 45 | |
| Mayhem Security | Cybersecurity | Open source | Bethesda, United States | — | 45 | |
| Scribe Security | Supply Chain | Open source | Tel Aviv, Israel | — | 43 | |
| Slauth.io | Enterprise | Open source · Self-hostable | Ashburn, United States | $1.5M | 43 | |
| Cyviation | Cybersecurity | Open source | Tel Aviv, Israel | $4.0M | 43 | |
| Microsoft | Operating System | Open source | Redmond, United States | — | 43 | |
| Hacktron AI Inc. | Cybersecurity | Open source | San Francisco, United States | $1.0M | 43 | |
| Paart | AI Governance | Open source | San Francisco, United States | — | 40 | |
| Codavel | Cybersecurity | Open source | Porto, Portugal | — | 38 | |
| SOC Prime | Cybersecurity | Open source | Boston, United States | $21.5M | 36 | |
| Dustico | Enterprise | Open source · Self-hostable | Tel Aviv, Israel | — | 34 | |
| Virtual Vision | Spatial Computing & XR | Open source | Montreal, Canada | — | 34 | |
| Secuvy | Cybersecurity | Open source | Ottawa, Canada | — | 32 | |
| Bell Cyber | Cybersecurity | Open source | Tel Aviv, Israel | — | 28 | |
| GeeTest CAPTCHA | Cybersecurity | Open source | Shanghai, China | — | 25 | |
| Palo Alto Networks Cortex XDR | Cybersecurity | Open source | Santa Clara, United States | — | 23 |