Open source focus
Open Source Alternatives to Fasstnet
60 open source AdTech options similar to Fasstnet, 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.
Delve AI53MarTechNew York, United States$33.5MOpen source
Marketeam38MarketingTel Aviv, IsraelOpen source
Dydas33Agentic AITel Aviv, IsraelOpen source
AllAspect14MarketingOpen source
Auto InflateGenerative AIOpen source
LozaraAgentic AITel Aviv, IsraelOpen source
AdsmuseAdTechTel Aviv, IsraelOpen source
LeanmarketingMarTechOpen source
Hightouch70Customer Data PlatformSan Francisco, United States$322.0MOpen source
Akool47Generative AIPalo Alto, United States$40.0MOpen source
Melissa34Customer Data PlatformTel Aviv, Israel$2.0MOpen source
Firstprinciplesgtm33Agentic AISan Francisco, United StatesOpen source
Vambe31Generative AITel Aviv, Israel$14.0MOpen source
Gizzmo27MediaOpen source
RE2320Real EstateNew York, United StatesOpen source
- Mightymob14Agentic AITel Aviv, Israel
Open source
360sprint4Agentic AITel Aviv, IsraelOpen source
ProjectadAdTechOpen source
OrionmediaAdTechOpen source
- EffervescenceGenerative AISan Francisco, United States
Open source
BugaboohaGenerative AITel Aviv, IsraelOpen source
GhoztAgentic AIOpen source
PinarliAgentic AITel Aviv, IsraelOpen source
MedinanetAgentic AITel Aviv, IsraelOpen source
FounderKitSaaS ToolkitSan Francisco, United StatesOpen source
FlyingelephantsGenerative AITel Aviv, IsraelOpen source
CohartcocoGenerative AIOpen source
CreatstratGenerative AITel Aviv, Israel$1.0MOpen source
MotorwerkGenerative AITel Aviv, IsraelOpen source
OpenAI83Artificial IntelligenceSan Francisco, United States$493.9BOpen source
SpaceXAI76Frontier AI LabPalo Alto, United States$32.1BOpen source
Together AI76AI InfrastructureSan Francisco, United States$906.0MOpen source · Self-hostable
Manus AI75Agentic AISingapore, Singapore$150.0MOpen source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
DeepSeek AI70AI InfrastructureBeijing, China$7.0BOpen source
OpenRouter70InfrastructureSan Francisco, United States$153.5MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
Lacentral68Frontier AI LabSan Francisco, United States$11.3BOpen source
Stability AI68Generative AILondon, United Kingdom$101.0MOpen source · Self-hostable
Sourcegraph (Cody)66AI Coding AssistantSan Francisco, United States$301.0MOpen source
Daytona66AI InfrastructureNew York, United States$46.0MOpen source
- MOMoonshot AI66Frontier AI LabBeijing, China$250.0M
Open source
Dust65Agentic AIParis, France$15.0MOpen source
Arize AI65AI ObservabilityBerkeley, United StatesOpen source
z.ai65Foundation ModelSan Francisco, USA$1.3BOpen source
cubic65Supply ChainTel Aviv, IsraelOpen source
TwelveLabs64Video IntelligenceSan Francisco, United States$68.0MOpen source
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
H2O.ai64Foundation ModelMountain View, United States$228.1MOpen source · Self-hostable
Resend64Developer ToolsSan Francisco, United States$3.0MOpen source
Qodo64AI Coding AssistantTel Aviv, Israel$1.5MOpen source
CopilotKit64Agentic AISan Francisco, United States$42.0MOpen source
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Pola.rs63AI Search EngineTel Aviv, Israel$26.0MOpen source
Weights & Biases (W&B)63MLOpsSan Francisco, United States$521.0MOpen source
Sarvam AI63Agentic AIBengaluru, India$234.0MOpen source
Chai Research63AI CompanionPalo Alto, United States$55.0MOpen source
Trigger Device Inc63AI AgentsLondon, United Kingdom$16.5MOpen source · Self-hostable
Entire62Artificial Intelligence$60.0MOpen source · Self-hostable
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Delve AI | MarTech | Open source | New York, United States | $33.5M | 53 |
| Marketeam | Marketing | Open source | Tel Aviv, Israel | — | 38 |
| Dydas | Agentic AI | Open source | Tel Aviv, Israel | — | 33 |
| AllAspect | Marketing | Open source | — | — | 14 |
| Auto Inflate | Generative AI | Open source | — | — | — |
| Lozara | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Adsmuse | AdTech | Open source | Tel Aviv, Israel | — | — |
| Leanmarketing | MarTech | Open source | — | — | — |
| Hightouch | Customer Data Platform | Open source | San Francisco, United States | $322.0M | 70 |
| Akool | Generative AI | Open source | Palo Alto, United States | $40.0M | 47 |
| Melissa | Customer Data Platform | Open source | Tel Aviv, Israel | $2.0M | 34 |
| Firstprinciplesgtm | Agentic AI | Open source | San Francisco, United States | — | 33 |
| Vambe | Generative AI | Open source | Tel Aviv, Israel | $14.0M | 31 |
| Gizzmo | Media | Open source | — | — | 27 |
| RE23 | Real Estate | Open source | New York, United States | — | 20 |
| Agentic AI | Open source | Tel Aviv, Israel | — | 14 | |
| 360sprint | Agentic AI | Open source | Tel Aviv, Israel | — | 4 |
| Projectad | AdTech | Open source | — | — | — |
| Orionmedia | AdTech | Open source | — | — | — |
| Generative AI | Open source | San Francisco, United States | — | — | |
| Bugabooha | Generative AI | Open source | Tel Aviv, Israel | — | — |
| Ghozt | Agentic AI | Open source | — | — | — |
| Pinarli | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Medinanet | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| FounderKit | SaaS Toolkit | Open source | San Francisco, United States | — | — |
| Flyingelephants | Generative AI | Open source | Tel Aviv, Israel | — | — |
| Cohartcoco | Generative AI | Open source | — | — | — |
| Creatstrat | Generative AI | Open source | Tel Aviv, Israel | $1.0M | — |
| Motorwerk | Generative AI | Open source | Tel Aviv, Israel | — | — |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 83 |
| SpaceXAI | Frontier AI Lab | Open source | Palo Alto, United States | $32.1B | 76 |
| Together AI | AI Infrastructure | Open source · Self-hostable | San Francisco, United States | $906.0M | 76 |
| Manus AI | Agentic AI | Open source | Singapore, Singapore | $150.0M | 75 |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| DeepSeek AI | AI Infrastructure | Open source | Beijing, China | $7.0B | 70 |
| OpenRouter | Infrastructure | Open source | San Francisco, United States | $153.5M | 70 |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 |
| Lacentral | Frontier AI Lab | Open source | San Francisco, United States | $11.3B | 68 |
| Stability AI | Generative AI | Open source · Self-hostable | London, United Kingdom | $101.0M | 68 |
| Sourcegraph (Cody) | AI Coding Assistant | Open source | San Francisco, United States | $301.0M | 66 |
| Daytona | AI Infrastructure | Open source | New York, United States | $46.0M | 66 |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $250.0M | 66 |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 |
| Arize AI | AI Observability | Open source | Berkeley, United States | — | 65 |
| z.ai | Foundation Model | Open source | San Francisco, USA | $1.3B | 65 |
| cubic | Supply Chain | Open source | Tel Aviv, Israel | — | 65 |
| TwelveLabs | Video Intelligence | Open source | San Francisco, United States | $68.0M | 64 |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 |
| H2O.ai | Foundation Model | Open source · Self-hostable | Mountain View, United States | $228.1M | 64 |
| Resend | Developer Tools | Open source | San Francisco, United States | $3.0M | 64 |
| Qodo | AI Coding Assistant | Open source | Tel Aviv, Israel | $1.5M | 64 |
| CopilotKit | Agentic AI | Open source | San Francisco, United States | $42.0M | 64 |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 |
| Pola.rs | AI Search Engine | Open source | Tel Aviv, Israel | $26.0M | 63 |
| Weights & Biases (W&B) | MLOps | Open source | San Francisco, United States | $521.0M | 63 |
| Sarvam AI | Agentic AI | Open source | Bengaluru, India | $234.0M | 63 |
| Chai Research | AI Companion | Open source | Palo Alto, United States | $55.0M | 63 |
| Trigger Device Inc | AI Agents | Open source · Self-hostable | London, United Kingdom | $16.5M | 63 |
| Entire | Artificial Intelligence | Open source · Self-hostable | — | $60.0M | 62 |