Open source focus
Swagger is open source
Open Source Alternatives to Swagger
60 open source API Development options similar to Swagger, 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.
API Platform16API PlatformParis, FranceOpen source · Self-hostable
- STStrongLoop38API PlatformSan Mateo, United States$9.0M
Open source · Self-hostable
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
DVC54MLOpsSan Francisco, United States$154.0MOpen source · Self-hostable
Kestra49Data OrchestrationParis, France$36.0MOpen source · Self-hostable
MLflow45MLOpsSeattle, United StatesOpen source · Self-hostable
Amplication44EnterpriseTel Aviv, IsraelOpen source · Self-hostable
Apache Airflow19MLOpsOpen source · Self-hostable
Bayouops4Cloud InfrastructureHouston, United StatesOpen source
Postman78API DevelopmentSan Francisco, United StatesOpen source
Temporal71Workflow AutomationSeattle, United States$134.0MOpen source
Tecton, Inc.67MLOpsSan Francisco, United States$257.0MOpen source
Firebolt65Cloud Data WarehousePalo Alto, United States$269.0MOpen source
ClearML64AutoMLTel Aviv, Israel$11.0MOpen source · Self-hostable
Weights & Biases (W&B)63MLOpsSan Francisco, United States$521.0MOpen source
Domino Data Lab, Inc.63AI GovernanceNew York, United States$100.5MOpen source
Comet ML62MLOpsNew York, United States$69.8MOpen source
Komodor61Software DevelopmentTel Aviv, Israel$67.0MOpen source
Metabase60Data AnalyticsSan Francisco, United States$8.0MOpen source · Self-hostable
Baseten57MLOpsSan Francisco, United States$2.3BOpen source
Feast AI54MLOpsSan Francisco, United StatesOpen source · Self-hostable
WireMock54Enterprise$6.5MOpen source · Self-hostable
OpenMeter54MLOpsTel Aviv, Israel$3.0MOpen source · Self-hostable
Langflow53Agentic AILisbon, PortugalOpen source · Self-hostable
Runhouse52EnterpriseSan Francisco, United States$4.9MOpen source
Hex Technologies50Data PlatformSan Francisco, United States$217.5MOpen source
Bauplanlabs49MLOpsSan Francisco, United StatesOpen source
Inngest Inc.48Developer ToolsSan Francisco, United States$5.0MOpen source
cal.com47Scheduling SoftwareBerlin, GermanyOpen source · Self-hostable
Responsive40EnterpriseSan Francisco, United StatesOpen source · Self-hostable
- SOSource32AI InfrastructureSan Francisco, United States$24.0M
Open source · Self-hostable
PromptQL31Artificial IntelligenceSan Francisco, United StatesOpen source · Self-hostable
Gemini CLI27AI Tools & AppsOpen source · Self-hostable
Node.js26Software DevelopmentOpen source · Self-hostable
Kantu26Workflow AutomationOpen source · Self-hostable
Camunda Pte. Limited18Workflow AutomationBerlin, GermanyOpen source · Self-hostable
LLMStack15Agentic AIOpen source · Self-hostable
- MAMaige13Open Source
Open source · Self-hostable
MCP.so10Developer ToolsOpen source · Self-hostable
Meshes7MLOpsTel Aviv, Israel$1.0MOpen source
Databricks82Data AnalyticsSan Francisco, United States$31.7BOpen source · Self-hostable
TestMu AI (Formerly LambdaTest)77MLOpsSan Francisco, United States$121Open source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
Posit68Data Science PlatformBoston, United States$169.9MOpen source · Self-hostable
YugabyteDB67DatabaseSunnyvale, United States$266.0MOpen source · Self-hostable
ScyllaDB66DatabasePalo Alto, United States$101.0MOpen source · Self-hostable
H2O.ai64Foundation ModelMountain View, United States$228.1MOpen source · Self-hostable
Airweave63Agentic AISan Francisco, United States$6.0MOpen source · Self-hostable
Trigger Device Inc63AI AgentsLondon, United Kingdom$16.5MOpen source · Self-hostable
Orkes62Artificial IntelligenceSanta Clara, USA$89.3MOpen source
Spacelift61Infrastructure as CodeWarsaw, Poland$73.6MOpen source
Sourcegraph61Developer ToolsSan Francisco, United States$218.0MOpen source
Appwrite61EnterpriseSan Francisco, United States$37.0MOpen source · Self-hostable
Comet59MLOpsNew York, United States$75.0MOpen source
pgEdge, Inc.58DatabaseSan Francisco, United States$24.0MOpen source · Self-hostable
Dash058ObservabilitySan Francisco, United States$147.2MOpen source
Steel.dev58Developer ToolsTel Aviv, Israel$17.0MOpen source · Self-hostable
Comfy Org58AI Image Generation$30.0MOpen source
Liblab58Developer ToolsAustin, United States$42.0MOpen source · Self-hostable
BotCity57RPASão Paulo, Brazil$16.5MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| API Platform | API Platform | Open source · Self-hostable | Paris, France | — | 16 |
| STStrongLoop | API Platform | Open source · Self-hostable | San Mateo, United States | $9.0M | 38 |
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 |
| DVC | MLOps | Open source · Self-hostable | San Francisco, United States | $154.0M | 54 |
| Kestra | Data Orchestration | Open source · Self-hostable | Paris, France | $36.0M | 49 |
| MLflow | MLOps | Open source · Self-hostable | Seattle, United States | — | 45 |
| Amplication | Enterprise | Open source · Self-hostable | Tel Aviv, Israel | — | 44 |
| Apache Airflow | MLOps | Open source · Self-hostable | — | — | 19 |
| Bayouops | Cloud Infrastructure | Open source | Houston, United States | — | 4 |
| Postman | API Development | Open source | San Francisco, United States | — | 78 |
| Temporal | Workflow Automation | Open source | Seattle, United States | $134.0M | 71 |
| Tecton, Inc. | MLOps | Open source | San Francisco, United States | $257.0M | 67 |
| Firebolt | Cloud Data Warehouse | Open source | Palo Alto, United States | $269.0M | 65 |
| ClearML | AutoML | Open source · Self-hostable | Tel Aviv, Israel | $11.0M | 64 |
| Weights & Biases (W&B) | MLOps | Open source | San Francisco, United States | $521.0M | 63 |
| Domino Data Lab, Inc. | AI Governance | Open source | New York, United States | $100.5M | 63 |
| Comet ML | MLOps | Open source | New York, United States | $69.8M | 62 |
| Komodor | Software Development | Open source | Tel Aviv, Israel | $67.0M | 61 |
| Metabase | Data Analytics | Open source · Self-hostable | San Francisco, United States | $8.0M | 60 |
| Baseten | MLOps | Open source | San Francisco, United States | $2.3B | 57 |
| Feast AI | MLOps | Open source · Self-hostable | San Francisco, United States | — | 54 |
| WireMock | Enterprise | Open source · Self-hostable | — | $6.5M | 54 |
| OpenMeter | MLOps | Open source · Self-hostable | Tel Aviv, Israel | $3.0M | 54 |
| Langflow | Agentic AI | Open source · Self-hostable | Lisbon, Portugal | — | 53 |
| Runhouse | Enterprise | Open source | San Francisco, United States | $4.9M | 52 |
| Hex Technologies | Data Platform | Open source | San Francisco, United States | $217.5M | 50 |
| Bauplanlabs | MLOps | Open source | San Francisco, United States | — | 49 |
| Inngest Inc. | Developer Tools | Open source | San Francisco, United States | $5.0M | 48 |
| cal.com | Scheduling Software | Open source · Self-hostable | Berlin, Germany | — | 47 |
| Responsive | Enterprise | Open source · Self-hostable | San Francisco, United States | — | 40 |
| SOSource | AI Infrastructure | Open source · Self-hostable | San Francisco, United States | $24.0M | 32 |
| PromptQL | Artificial Intelligence | Open source · Self-hostable | San Francisco, United States | — | 31 |
| Gemini CLI | AI Tools & Apps | Open source · Self-hostable | — | — | 27 |
| Node.js | Software Development | Open source · Self-hostable | — | — | 26 |
| Kantu | Workflow Automation | Open source · Self-hostable | — | — | 26 |
| Camunda Pte. Limited | Workflow Automation | Open source · Self-hostable | Berlin, Germany | — | 18 |
| LLMStack | Agentic AI | Open source · Self-hostable | — | — | 15 |
| MAMaige | Open Source | Open source · Self-hostable | — | — | 13 |
| MCP.so | Developer Tools | Open source · Self-hostable | — | — | 10 |
| Meshes | MLOps | Open source | Tel Aviv, Israel | $1.0M | 7 |
| Databricks | Data Analytics | Open source · Self-hostable | San Francisco, United States | $31.7B | 82 |
| TestMu AI (Formerly LambdaTest) | MLOps | Open source | San Francisco, United States | $121 | 77 |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 |
| Posit | Data Science Platform | Open source · Self-hostable | Boston, United States | $169.9M | 68 |
| YugabyteDB | Database | Open source · Self-hostable | Sunnyvale, United States | $266.0M | 67 |
| ScyllaDB | Database | Open source · Self-hostable | Palo Alto, United States | $101.0M | 66 |
| H2O.ai | Foundation Model | Open source · Self-hostable | Mountain View, United States | $228.1M | 64 |
| Airweave | Agentic AI | Open source · Self-hostable | San Francisco, United States | $6.0M | 63 |
| Trigger Device Inc | AI Agents | Open source · Self-hostable | London, United Kingdom | $16.5M | 63 |
| Orkes | Artificial Intelligence | Open source | Santa Clara, USA | $89.3M | 62 |
| Spacelift | Infrastructure as Code | Open source | Warsaw, Poland | $73.6M | 61 |
| Sourcegraph | Developer Tools | Open source | San Francisco, United States | $218.0M | 61 |
| Appwrite | Enterprise | Open source · Self-hostable | San Francisco, United States | $37.0M | 61 |
| Comet | MLOps | Open source | New York, United States | $75.0M | 59 |
| pgEdge, Inc. | Database | Open source · Self-hostable | San Francisco, United States | $24.0M | 58 |
| Dash0 | Observability | Open source | San Francisco, United States | $147.2M | 58 |
| Steel.dev | Developer Tools | Open source · Self-hostable | Tel Aviv, Israel | $17.0M | 58 |
| Comfy Org | AI Image Generation | Open source | — | $30.0M | 58 |
| Liblab | Developer Tools | Open source · Self-hostable | Austin, United States | $42.0M | 58 |
| BotCity | RPA | Open source | São Paulo, Brazil | $16.5M | 57 |