Open source focus
Attestely is open source
Open Source Alternatives to Attestely
60 open source Cybersecurity options similar to Attestely, 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.
MANIFEST56LegalNew York, United States$23.0MOpen source
- ActradeckAI Coding Assistant
Open source
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Galileo Technologies, Inc.61AI ObservabilitySan Francisco, United States$45.0MOpen source
Backslash Security57CybersecurityTel Aviv, Israel$27.0MOpen source
Knostic54Cybersecurity$14.3MOpen source
Oplane49CybersecurityMalmö, Sweden$4.5MOpen source
Arcade46Artificial IntelligenceSan Francisco, USA$60.0MOpen source
Slauth.io38EnterpriseAshburn, United States$1.5MOpen source · Self-hostable
- Svitch26AI GovernanceSan Francisco, United States
Open source
Vibranium Dome23AI AgentsOpen source · Self-hostable
0sec11CybersecurityTel Aviv, IsraelOpen source · Self-hostable
DocsGPT8Open SourceOpen source · Self-hostable
- IronweftAgentic AISan Francisco, United States
Open source
MarchwardAgentic AISan Francisco, United StatesOpen source
Snyk85AI Coding AssistantBoston, United States$488.5MOpen source · Self-hostable
Google DeepMind83Frontier AI LabLondon, United Kingdom$676.7MOpen source
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
Codeium71Artificial IntelligenceMountain View, United States$396.7MOpen source
Sourcegraph (Cody)66AI Coding AssistantSan Francisco, United States$301.0MOpen source
Aikido Security65CybersecurityGhent, Belgium$84.4MOpen source
Protect AI64CybersecuritySeattle, United States$105.0MOpen source
CopilotKit64Agentic AISan Francisco, United States$42.0MOpen source
Chainguard62CybersecuritySeattle, United States$385.0MOpen source · Self-hostable
Giskard60Artificial IntelligenceParis, France$2.5MOpen source
Mend60Open SourceTel Aviv, Israel$121.5MOpen source · Self-hostable
Overops59EnterpriseSan Francisco, United States$49.5MOpen source
Clutch Security59CybersecuritySan Francisco, United States$10.0MOpen source
Agency58Agentic AISan Francisco, United States$20.0MOpen source
Boost Security57CybersecuritySan Francisco, USA$12.0MOpen source
Pynt55CybersecurityTel Aviv, Israel$6.0MOpen source
Graphite55AI Coding AssistantSan Francisco, United StatesOpen source
Vijil55Agentic AISan Francisco, United States$17.0MOpen source
Bito54AI Coding AssistantSan Francisco, United States$5.7MOpen source
Piiano54EnterpriseTel Aviv, Israel$9.0MOpen source
Lunar.dev53EnterpriseTel Aviv, Israel$6.0MOpen source
Tinfoil50CybersecuritySan Francisco, United States$500.3MOpen source
DataFlint49AI CopilotSan Francisco, United StatesOpen source
bolt.new49AI Coding AssistantSan Francisco, United StatesOpen source
Torch Security49CybersecurityLeawood, United StatesOpen source
Fiddler Labs48AI ObservabilityMountain View, United StatesOpen source
- TRTruffle Security47CybersecuritySan Francisco, United States$30.0M
Open source
ORY47Identity & Access ManagementBerlin, Germany$17.0MOpen source · Self-hostable
Antithesis46CybersecuritySan Francisco, United States$117.5MOpen source
Mayhem Security45CybersecurityBethesda, United StatesOpen source
- GRGreptile44AI Coding AssistantSan Francisco, United States$6.5M
Open source
- CRCrash Override44CybersecuritySan Francisco, United States$5.0M
Open source
Microsoft43Operating SystemRedmond, United StatesOpen source
Mnemom43Agentic AISan Francisco, United StatesOpen source
Paart40AI GovernanceSan Francisco, United StatesOpen source
K-Scale Labs40Frontier AI LabSan Francisco, United StatesOpen source · Self-hostable
Astrasafe35AI GovernanceTel Aviv, Israel$1.5MOpen source
Blacksmith Software35AI Coding AssistantSan Francisco, United States$15.0MOpen source
Meshahid34AI Coding AssistantTel Aviv, Israel$1.5MOpen source
Galaxy33Software DevelopmentNew York City, United States$2.0BOpen source
Cipherwake30CybersecurityOpen source
TensorZero29AI Coding AssistantSan Francisco, United States$7.3MOpen source
Ontic25AI SafetySan Francisco, United States$291.5MOpen source
All-Hands AI25Agentic AIOpen source · Self-hostable
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| MANIFEST | Legal | Open source | New York, United States | $23.0M | 56 |
| AI Coding Assistant | Open source | — | — | — | |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 |
| Galileo Technologies, Inc. | AI Observability | Open source | San Francisco, United States | $45.0M | 61 |
| Backslash Security | Cybersecurity | Open source | Tel Aviv, Israel | $27.0M | 57 |
| Knostic | Cybersecurity | Open source | — | $14.3M | 54 |
| Oplane | Cybersecurity | Open source | Malmö, Sweden | $4.5M | 49 |
| Arcade | Artificial Intelligence | Open source | San Francisco, USA | $60.0M | 46 |
| Slauth.io | Enterprise | Open source · Self-hostable | Ashburn, United States | $1.5M | 38 |
| AI Governance | Open source | San Francisco, United States | — | 26 | |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 |
| 0sec | Cybersecurity | Open source · Self-hostable | Tel Aviv, Israel | — | 11 |
| DocsGPT | Open Source | Open source · Self-hostable | — | — | 8 |
| Agentic AI | Open source | San Francisco, United States | — | — | |
| Marchward | Agentic AI | Open source | San Francisco, United States | — | — |
| Snyk | AI Coding Assistant | Open source · Self-hostable | Boston, United States | $488.5M | 85 |
| Google DeepMind | Frontier AI Lab | Open source | London, United Kingdom | $676.7M | 83 |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 |
| Codeium | Artificial Intelligence | Open source | Mountain View, United States | $396.7M | 71 |
| Sourcegraph (Cody) | AI Coding Assistant | Open source | San Francisco, United States | $301.0M | 66 |
| Aikido Security | Cybersecurity | Open source | Ghent, Belgium | $84.4M | 65 |
| Protect AI | Cybersecurity | Open source | Seattle, United States | $105.0M | 64 |
| CopilotKit | Agentic AI | Open source | San Francisco, United States | $42.0M | 64 |
| Chainguard | Cybersecurity | Open source · Self-hostable | Seattle, United States | $385.0M | 62 |
| Giskard | Artificial Intelligence | Open source | Paris, France | $2.5M | 60 |
| Mend | Open Source | Open source · Self-hostable | Tel Aviv, Israel | $121.5M | 60 |
| Overops | Enterprise | Open source | San Francisco, United States | $49.5M | 59 |
| Clutch Security | Cybersecurity | Open source | San Francisco, United States | $10.0M | 59 |
| Agency | Agentic AI | Open source | San Francisco, United States | $20.0M | 58 |
| Boost Security | Cybersecurity | Open source | San Francisco, USA | $12.0M | 57 |
| Pynt | Cybersecurity | Open source | Tel Aviv, Israel | $6.0M | 55 |
| Graphite | AI Coding Assistant | Open source | San Francisco, United States | — | 55 |
| Vijil | Agentic AI | Open source | San Francisco, United States | $17.0M | 55 |
| Bito | AI Coding Assistant | Open source | San Francisco, United States | $5.7M | 54 |
| Piiano | Enterprise | Open source | Tel Aviv, Israel | $9.0M | 54 |
| Lunar.dev | Enterprise | Open source | Tel Aviv, Israel | $6.0M | 53 |
| Tinfoil | Cybersecurity | Open source | San Francisco, United States | $500.3M | 50 |
| DataFlint | AI Copilot | Open source | San Francisco, United States | — | 49 |
| bolt.new | AI Coding Assistant | Open source | San Francisco, United States | — | 49 |
| Torch Security | Cybersecurity | Open source | Leawood, United States | — | 49 |
| Fiddler Labs | AI Observability | Open source | Mountain View, United States | — | 48 |
| TRTruffle Security | Cybersecurity | Open source | San Francisco, United States | $30.0M | 47 |
| ORY | Identity & Access Management | Open source · Self-hostable | Berlin, Germany | $17.0M | 47 |
| Antithesis | Cybersecurity | Open source | San Francisco, United States | $117.5M | 46 |
| Mayhem Security | Cybersecurity | Open source | Bethesda, United States | — | 45 |
| GRGreptile | AI Coding Assistant | Open source | San Francisco, United States | $6.5M | 44 |
| CRCrash Override | Cybersecurity | Open source | San Francisco, United States | $5.0M | 44 |
| Microsoft | Operating System | Open source | Redmond, United States | — | 43 |
| Mnemom | Agentic AI | Open source | San Francisco, United States | — | 43 |
| Paart | AI Governance | Open source | San Francisco, United States | — | 40 |
| K-Scale Labs | Frontier AI Lab | Open source · Self-hostable | San Francisco, United States | — | 40 |
| Astrasafe | AI Governance | Open source | Tel Aviv, Israel | $1.5M | 35 |
| Blacksmith Software | AI Coding Assistant | Open source | San Francisco, United States | $15.0M | 35 |
| Meshahid | AI Coding Assistant | Open source | Tel Aviv, Israel | $1.5M | 34 |
| Galaxy | Software Development | Open source | New York City, United States | $2.0B | 33 |
| Cipherwake | Cybersecurity | Open source | — | — | 30 |
| TensorZero | AI Coding Assistant | Open source | San Francisco, United States | $7.3M | 29 |
| Ontic | AI Safety | Open source | San Francisco, United States | $291.5M | 25 |
| All-Hands AI | Agentic AI | Open source · Self-hostable | — | — | 25 |