Open source focus
Open Source Alternatives to Cello
60 open source Referral Marketing options similar to Cello, 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.
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
SOMAREALITY50Artificial IntelligenceVienna, Austria$3.0MOpen source
Co Build40AI Collaboration Tools$8.5MOpen source
GeminatorGenerative AIOpen source
SteunebrinkWebsite BuilderOpen source
ImpulsiaConversational AIOpen source
ProductexAI SolutionsOpen source
CultivateaiSales AutomationOpen source
Forter85FintechNew York, United States$550.0MOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
DeepL82Artificial IntelligenceCologne, Germany$300.0MOpen source
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
WorkOS71Developer ToolsSan Francisco, United States$198.0MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
LogicGate Risk Cloud68GRCChicago, United States$269.0MOpen source
Orkes62Artificial IntelligenceSanta Clara, USA$89.3MOpen source
Viktor62Artificial IntelligenceWarsaw, Poland$64.7MOpen source
OneSignal61Customer Engagement PlatformSan Mateo, United States$57.0MOpen source
Giskard60Artificial IntelligenceParis, France$2.5MOpen source
Dataiku60Artificial IntelligenceNew York, United States$200.0MOpen source
- CDCData Software58Artificial IntelligenceChapel Hill, United States$510.0M
Open source
Archestra.AI55Artificial IntelligenceLondon, United Kingdom$10.0MOpen source · Self-hostable
- HOHOOTL54Artificial IntelligenceCharlottesville, USA$6.5M
Open source
WSO254Artificial IntelligencePalo Alto, USA$63.0MOpen source · Self-hostable
Lambdatest India Private Limited53MLOpsSan Francisco, United StatesOpen source
D-Wave51Quantum ComputingBurnaby, CanadaOpen source
Arthur51Agentic AISan Francisco, United States$10.0MOpen source
Visual Layer50DatabaseTel Aviv, Israel$7.0MOpen source · Self-hostable
SugarCRM49CRM & Sales SoftwareSan Francisco, United States$86.5MOpen source · Self-hostable
Arcade48Artificial IntelligenceSan Francisco, USA$60.0MOpen source
Dub48MarTechSan Francisco, United States$17.0MOpen source
Orderful48Supply Chain ManagementSan Francisco, USA$35.0MOpen source
Prem47Artificial IntelligenceZurich, Switzerland$100.0MOpen source
Timefold46Artificial IntelligenceAmsterdam, Netherlands$13.0MOpen source
Outlit45Agentic AI$500KOpen source
Trackonomics44MarketingTel Aviv, Israel$1.4MOpen source
Kiro IDE44Artificial IntelligenceSan Francisco, United StatesOpen source
- ATAttio41CRMLondon, United Kingdom$93.5M
Open source
Duely41LegalTechGhent, Belgium$1.1MOpen source
GoaffPro33Affiliate MarketingSirsa, IndiaOpen source
Firstprinciplesgtm33Agentic AISan Francisco, United StatesOpen source
Qualifire32Generative AIOpen source
PromptQL31Artificial IntelligenceSan Francisco, United StatesOpen source · Self-hostable
Gizzmo27MediaOpen source
AIMLAPI26API PlatformTallinn, EstoniaOpen source
RE2320Real EstateNew York, United StatesOpen source
P3rsona18AI InfrastructureOpen source
Quantty15Foundation ModelOpen source
Moxyai14Generative AIOpen source
- Mightymob14Agentic AITel Aviv, Israel
Open source
Darim14Conversational AIOpen source
Modelglass12AI InfrastructureSydney, AustraliaOpen source
MCP.so10Developer ToolsOpen source · Self-hostable
Truebloom8Agentic AISan Francisco, United StatesOpen source
Ardeiro8Agentic AIOpen source
Deep427Market IntelligenceOpen source
Airevl4Agentic AISan Francisco, United StatesOpen source
Gravitee4CybersecurityLondon, United KingdomOpen source
360sprint4Agentic AITel Aviv, IsraelOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 | |
| SOMAREALITY | Artificial Intelligence | Open source | Vienna, Austria | $3.0M | 50 | |
| Co Build | AI Collaboration Tools | Open source | — | $8.5M | 40 | |
| Geminator | Generative AI | Open source | — | — | — | |
| Steunebrink | Website Builder | Open source | — | — | — | |
| Impulsia | Conversational AI | Open source | — | — | — | |
| Productex | AI Solutions | Open source | — | — | — | |
| Cultivateai | Sales Automation | 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 | |
| DeepL | Artificial Intelligence | Open source | Cologne, Germany | $300.0M | 82 | |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 | |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 | |
| WorkOS | Developer Tools | Open source | San Francisco, United States | $198.0M | 71 | |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 | |
| LogicGate Risk Cloud | GRC | Open source | Chicago, United States | $269.0M | 68 | |
| Orkes | Artificial Intelligence | Open source | Santa Clara, USA | $89.3M | 62 | |
| Viktor | Artificial Intelligence | Open source | Warsaw, Poland | $64.7M | 62 | |
| OneSignal | Customer Engagement Platform | Open source | San Mateo, United States | $57.0M | 61 | |
| Giskard | Artificial Intelligence | Open source | Paris, France | $2.5M | 60 | |
| Dataiku | Artificial Intelligence | Open source | New York, United States | $200.0M | 60 | |
| CDCData Software | Artificial Intelligence | Open source | Chapel Hill, United States | $510.0M | 58 | |
| Archestra.AI | Artificial Intelligence | Open source · Self-hostable | London, United Kingdom | $10.0M | 55 | |
| HOHOOTL | Artificial Intelligence | Open source | Charlottesville, USA | $6.5M | 54 | |
| WSO2 | Artificial Intelligence | Open source · Self-hostable | Palo Alto, USA | $63.0M | 54 | |
| Lambdatest India Private Limited | MLOps | Open source | San Francisco, United States | — | 53 | |
| D-Wave | Quantum Computing | Open source | Burnaby, Canada | — | 51 | |
| Arthur | Agentic AI | Open source | San Francisco, United States | $10.0M | 51 | |
| Visual Layer | Database | Open source · Self-hostable | Tel Aviv, Israel | $7.0M | 50 | |
| SugarCRM | CRM & Sales Software | Open source · Self-hostable | San Francisco, United States | $86.5M | 49 | |
| Arcade | Artificial Intelligence | Open source | San Francisco, USA | $60.0M | 48 | |
| Dub | MarTech | Open source | San Francisco, United States | $17.0M | 48 | |
| Orderful | Supply Chain Management | Open source | San Francisco, USA | $35.0M | 48 | |
| Prem | Artificial Intelligence | Open source | Zurich, Switzerland | $100.0M | 47 | |
| Timefold | Artificial Intelligence | Open source | Amsterdam, Netherlands | $13.0M | 46 | |
| Outlit | Agentic AI | Open source | — | $500K | 45 | |
| Trackonomics | Marketing | Open source | Tel Aviv, Israel | $1.4M | 44 | |
| Kiro IDE | Artificial Intelligence | Open source | San Francisco, United States | — | 44 | |
| ATAttio | CRM | Open source | London, United Kingdom | $93.5M | 41 | |
| Duely | LegalTech | Open source | Ghent, Belgium | $1.1M | 41 | |
| GoaffPro | Affiliate Marketing | Open source | Sirsa, India | — | 33 | |
| Firstprinciplesgtm | Agentic AI | Open source | San Francisco, United States | — | 33 | |
| Qualifire | Generative AI | Open source | — | — | 32 | |
| PromptQL | Artificial Intelligence | Open source · Self-hostable | San Francisco, United States | — | 31 | |
| Gizzmo | Media | Open source | — | — | 27 | |
| AIMLAPI | API Platform | Open source | Tallinn, Estonia | — | 26 | |
| RE23 | Real Estate | Open source | New York, United States | — | 20 | |
| P3rsona | AI Infrastructure | Open source | — | — | 18 | |
| Quantty | Foundation Model | Open source | — | — | 15 | |
| Moxyai | Generative AI | Open source | — | — | 14 | |
| Agentic AI | Open source | Tel Aviv, Israel | — | 14 | ||
| Darim | Conversational AI | Open source | — | — | 14 | |
| Modelglass | AI Infrastructure | Open source | Sydney, Australia | — | 12 | |
| MCP.so | Developer Tools | Open source · Self-hostable | — | — | 10 | |
| Truebloom | Agentic AI | Open source | San Francisco, United States | — | 8 | |
| Ardeiro | Agentic AI | Open source | — | — | 8 | |
| Deep42 | Market Intelligence | Open source | — | — | 7 | |
| Airevl | Agentic AI | Open source | San Francisco, United States | — | 4 | |
| Gravitee | Cybersecurity | Open source | London, United Kingdom | — | 4 | |
| 360sprint | Agentic AI | Open source | Tel Aviv, Israel | — | 4 |