Open source focus
Open Source Alternatives to API Hero Ltd
60 open source API Platform options similar to API Hero Ltd, 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.
Postman78API DevelopmentSan Francisco, United StatesOpen source
Stoplight50API PlatformAustin, United States$21.6MOpen source
TestMu AI (Formerly LambdaTest)77MLOpsSan Francisco, United States$121Open source
Temporal71Workflow AutomationSeattle, United States$134.0MOpen source
Tecton, Inc.67MLOpsSan Francisco, United States$257.0MOpen source
Sourcegraph61Developer ToolsSan Francisco, United States$218.0MOpen source
Baseten57MLOpsSan Francisco, United States$2.3BOpen source
Checksum55Test AutomationSan Francisco, United StatesOpen source
Diffblue55AI Coding AssistantOxford, United KingdomOpen source
WireMock54Enterprise$6.5MOpen source · Self-hostable
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
Lunar.dev53EnterpriseTel Aviv, Israel$6.0MOpen source
Lambdatest India Private Limited53MLOpsSan Francisco, United StatesOpen source
Inngest Inc.48Developer ToolsSan Francisco, United States$5.0MOpen source
Amplication44EnterpriseTel Aviv, IsraelOpen source · Self-hostable
Orq.ai41Agentic AIAmsterdam, Netherlands$8.9MOpen source
Lawrence27Developer ToolsOpen source
Gemini CLI27AI Tools & AppsOpen source · Self-hostable
Swagger24API DevelopmentSomerville, United StatesOpen source · Self-hostable
Apache Airflow19MLOpsOpen source · Self-hostable
Bayouops4Cloud InfrastructureHouston, United StatesOpen source
Gravitee4CybersecurityLondon, United KingdomOpen source
TorchctsMLOpsOpen source
New Relic85Enterprise SoftwareSan Francisco, United States$7.2BOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
Neon72DatabaseSan Francisco, United States$1.2BOpen source
WorkOS71Developer ToolsSan Francisco, United States$198.0MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
Posit68Data Science PlatformBoston, United States$169.9MOpen source · Self-hostable
YugabyteDB67DatabaseSunnyvale, United States$266.0MOpen source · Self-hostable
Arize AI65AI ObservabilityBerkeley, United StatesOpen source
cubic65Supply ChainTel Aviv, IsraelOpen source
Firebolt65Cloud Data WarehousePalo Alto, United States$269.0MOpen source
CopilotKit64Agentic AISan Francisco, United States$42.0MOpen source
ClearML64AutoMLTel Aviv, Israel$11.0MOpen source · Self-hostable
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Weights & Biases (W&B)63MLOpsSan Francisco, United States$521.0MOpen source
ABLY63Realtime CommunicationLondon, United Kingdom$88.0MOpen source
Domino Data Lab, Inc.63AI GovernanceNew York, United States$100.5MOpen source
Orkes62Artificial IntelligenceSanta Clara, USA$89.3MOpen source
Comet ML62MLOpsNew York, United States$69.8MOpen source
Galileo Technologies, Inc.61AI ObservabilitySan Francisco, United States$45.0MOpen source
Komodor61Software DevelopmentTel Aviv, Israel$67.0MOpen source
Spacelift61Infrastructure as CodeWarsaw, Poland$73.6MOpen source
Stytch61AuthenticationSan Francisco, USA$127.0MOpen source
Appwrite61EnterpriseSan Francisco, United States$37.0MOpen source · Self-hostable
Replicate60AI InfrastructureSan Francisco, United StatesOpen source
Statsig60MLOpsNew York, United States$70.0MOpen source
Metabase60Data AnalyticsSan Francisco, United States$8.0MOpen source · Self-hostable
Comet59MLOpsNew York, United States$75.0MOpen source
Overops59EnterpriseSan Francisco, United States$49.5MOpen source
Modular58AI InfrastructureSan Francisco, United States$380.0MOpen source
Langfuse GmbH58MLOpsBerlin, Germany$2.5MOpen source
Dash058ObservabilitySan Francisco, United States$147.2MOpen source
FriendliAI57AI InfrastructureRedwood City, United States$89.0MOpen source
BotCity57RPASão Paulo, Brazil$16.5MOpen source
Stainless57Developer ToolsOpen source
Backstage57Developer ToolsStockholm, Sweden$63.0MOpen source · Self-hostable
TestMu56MLOpsSan Francisco, United States$11.0MOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Postman | API Development | Open source | San Francisco, United States | — | 78 | |
| Stoplight | API Platform | Open source | Austin, United States | $21.6M | 50 | |
| TestMu AI (Formerly LambdaTest) | MLOps | Open source | San Francisco, United States | $121 | 77 | |
| Temporal | Workflow Automation | Open source | Seattle, United States | $134.0M | 71 | |
| Tecton, Inc. | MLOps | Open source | San Francisco, United States | $257.0M | 67 | |
| Sourcegraph | Developer Tools | Open source | San Francisco, United States | $218.0M | 61 | |
| Baseten | MLOps | Open source | San Francisco, United States | $2.3B | 57 | |
| Checksum | Test Automation | Open source | San Francisco, United States | — | 55 | |
| Diffblue | AI Coding Assistant | Open source | Oxford, United Kingdom | — | 55 | |
| WireMock | Enterprise | Open source · Self-hostable | — | $6.5M | 54 | |
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 | |
| Lunar.dev | Enterprise | Open source | Tel Aviv, Israel | $6.0M | 53 | |
| Lambdatest India Private Limited | MLOps | Open source | San Francisco, United States | — | 53 | |
| Inngest Inc. | Developer Tools | Open source | San Francisco, United States | $5.0M | 48 | |
| Amplication | Enterprise | Open source · Self-hostable | Tel Aviv, Israel | — | 44 | |
| Orq.ai | Agentic AI | Open source | Amsterdam, Netherlands | $8.9M | 41 | |
| Lawrence | Developer Tools | Open source | — | — | 27 | |
| Gemini CLI | AI Tools & Apps | Open source · Self-hostable | — | — | 27 | |
| Swagger | API Development | Open source · Self-hostable | Somerville, United States | — | 24 | |
| Apache Airflow | MLOps | Open source · Self-hostable | — | — | 19 | |
| Bayouops | Cloud Infrastructure | Open source | Houston, United States | — | 4 | |
| Gravitee | Cybersecurity | Open source | London, United Kingdom | — | 4 | |
| Torchcts | MLOps | Open source | — | — | — | |
| New Relic | Enterprise Software | Open source | San Francisco, United States | $7.2B | 85 | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 | |
| Neon | Database | Open source | San Francisco, United States | $1.2B | 72 | |
| WorkOS | Developer Tools | Open source | San Francisco, United States | $198.0M | 71 | |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 | |
| 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 | |
| Arize AI | AI Observability | Open source | Berkeley, United States | — | 65 | |
| cubic | Supply Chain | Open source | Tel Aviv, Israel | — | 65 | |
| Firebolt | Cloud Data Warehouse | Open source | Palo Alto, United States | $269.0M | 65 | |
| CopilotKit | Agentic AI | Open source | San Francisco, United States | $42.0M | 64 | |
| ClearML | AutoML | Open source · Self-hostable | Tel Aviv, Israel | $11.0M | 64 | |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 | |
| Weights & Biases (W&B) | MLOps | Open source | San Francisco, United States | $521.0M | 63 | |
| ABLY | Realtime Communication | Open source | London, United Kingdom | $88.0M | 63 | |
| Domino Data Lab, Inc. | AI Governance | Open source | New York, United States | $100.5M | 63 | |
| Orkes | Artificial Intelligence | Open source | Santa Clara, USA | $89.3M | 62 | |
| Comet ML | MLOps | Open source | New York, United States | $69.8M | 62 | |
| Galileo Technologies, Inc. | AI Observability | Open source | San Francisco, United States | $45.0M | 61 | |
| Komodor | Software Development | Open source | Tel Aviv, Israel | $67.0M | 61 | |
| Spacelift | Infrastructure as Code | Open source | Warsaw, Poland | $73.6M | 61 | |
| Stytch | Authentication | Open source | San Francisco, USA | $127.0M | 61 | |
| Appwrite | Enterprise | Open source · Self-hostable | San Francisco, United States | $37.0M | 61 | |
| Replicate | AI Infrastructure | Open source | San Francisco, United States | — | 60 | |
| Statsig | MLOps | Open source | New York, United States | $70.0M | 60 | |
| Metabase | Data Analytics | Open source · Self-hostable | San Francisco, United States | $8.0M | 60 | |
| Comet | MLOps | Open source | New York, United States | $75.0M | 59 | |
| Overops | Enterprise | Open source | San Francisco, United States | $49.5M | 59 | |
| Modular | AI Infrastructure | Open source | San Francisco, United States | $380.0M | 58 | |
| Langfuse GmbH | MLOps | Open source | Berlin, Germany | $2.5M | 58 | |
| Dash0 | Observability | Open source | San Francisco, United States | $147.2M | 58 | |
| FriendliAI | AI Infrastructure | Open source | Redwood City, United States | $89.0M | 57 | |
| BotCity | RPA | Open source | São Paulo, Brazil | $16.5M | 57 | |
| Stainless | Developer Tools | Open source | — | — | 57 | |
| Backstage | Developer Tools | Open source · Self-hostable | Stockholm, Sweden | $63.0M | 57 | |
| TestMu | MLOps | Open source | San Francisco, United States | $11.0M | 56 |