Open source focus
Open Source Alternatives to ReadMe.io Co.
60 open source Developer Tools options similar to ReadMe.io Co., 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
Supernova37Developer ToolsSan Francisco, United States$129.2MOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
TestMu AI (Formerly LambdaTest)77MLOpsSan Francisco, United States$121Open source
WorkOS71Developer ToolsSan Francisco, United States$198.0MOpen source
Temporal71Workflow AutomationSeattle, United States$134.0MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
YugabyteDB67DatabaseSunnyvale, United States$266.0MOpen source · Self-hostable
Tecton, Inc.67MLOpsSan Francisco, United States$257.0MOpen source
CopilotKit64Agentic AISan Francisco, United States$42.0MOpen source
ABLY63Realtime CommunicationLondon, United Kingdom$88.0MOpen source
Orkes62Artificial IntelligenceSanta Clara, USA$89.3MOpen source
Appwrite61EnterpriseSan Francisco, United States$37.0MOpen source · Self-hostable
Stytch61AuthenticationSan Francisco, USA$127.0MOpen source
Sourcegraph61Developer ToolsSan Francisco, United States$218.0MOpen source
- MIMintlify / mcpt57Developer ToolsSan Francisco, United States
Open source
BotCity57RPASão Paulo, Brazil$16.5MOpen source
Baseten57MLOpsSan Francisco, United States$2.3BOpen source
Diffblue55AI Coding AssistantOxford, United KingdomOpen source
Raycast55ProductivityLondon, United Kingdom$17.7MOpen source
Checksum55Test AutomationSan Francisco, United StatesOpen source
Graphite55AI Coding AssistantSan Francisco, United StatesOpen source
Piiano54EnterpriseTel Aviv, Israel$9.0MOpen source
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
WireMock54Enterprise$6.5MOpen source · Self-hostable
BreezoMeter54Weather$42.9MOpen source
Lambdatest India Private Limited53MLOpsSan Francisco, United StatesOpen source
Svix53EnterpriseSan Francisco, United States$2.6MOpen source
Lunar.dev53EnterpriseTel Aviv, Israel$6.0MOpen source
Hyperspell52Agentic AISan Francisco, United States$1.5MOpen source
D-Wave51Quantum ComputingBurnaby, CanadaOpen source
Permit.io51Identity ManagementTel Aviv, Israel$14.0MOpen source
Dub48MarTechSan Francisco, United States$17.0MOpen source
Inngest Inc.48Developer ToolsSan Francisco, United States$5.0MOpen source
Arcade48Artificial IntelligenceSan Francisco, USA$60.0MOpen source
ORY47Identity & Access ManagementBerlin, Germany$17.0MOpen source · Self-hostable
cal.com47Scheduling SoftwareBerlin, GermanyOpen source · Self-hostable
Timefold46Artificial IntelligenceAmsterdam, Netherlands$13.0MOpen source
Bitloops45Developer ToolsAthens, Greece$1.5MOpen source
Amplication44EnterpriseTel Aviv, IsraelOpen source · Self-hostable
Kiro IDE44Artificial IntelligenceSan Francisco, United StatesOpen source
Base4444No CodeTel Aviv, IsraelOpen source
Slauth.io43EnterpriseAshburn, United States$1.5MOpen source · Self-hostable
Haystack42AI Search EngineSan Francisco, United States$10.0MOpen source
Orq.ai41Agentic AIAmsterdam, Netherlands$8.9MOpen source
Responsive40EnterpriseSan Francisco, United StatesOpen source · Self-hostable
Co Build40AI Collaboration Tools$8.5MOpen source
- STStrongLoop38API PlatformSan Mateo, United States$9.0M
Open source · Self-hostable
Joulix AI Technologies35AI Tools & AppsSan Francisco, Israel$2.3MOpen source
- MAMagic Patterns31Design SystemsSan Francisco, United States$9.0M
Open source
QUBRID30Cloud InfrastructureOpen source
Lawrence27Developer ToolsOpen source
Gemini CLI27AI Tools & AppsOpen source · Self-hostable
Kantu26Workflow AutomationOpen source · Self-hostable
Node.js26Software DevelopmentOpen source · Self-hostable
- Svitch26AI GovernanceSan Francisco, United States
Open source
Apigee25API PlatformSan Jose, United States$196.5MOpen source
Swagger24API DevelopmentSomerville, United StatesOpen source · Self-hostable
| 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 | |
| Supernova | Developer Tools | Open source | San Francisco, United States | $129.2M | 37 | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 | |
| TestMu AI (Formerly LambdaTest) | MLOps | Open source | San Francisco, United States | $121 | 77 | |
| WorkOS | Developer Tools | Open source | San Francisco, United States | $198.0M | 71 | |
| Temporal | Workflow Automation | Open source | Seattle, United States | $134.0M | 71 | |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 | |
| YugabyteDB | Database | Open source · Self-hostable | Sunnyvale, United States | $266.0M | 67 | |
| Tecton, Inc. | MLOps | Open source | San Francisco, United States | $257.0M | 67 | |
| CopilotKit | Agentic AI | Open source | San Francisco, United States | $42.0M | 64 | |
| ABLY | Realtime Communication | Open source | London, United Kingdom | $88.0M | 63 | |
| Orkes | Artificial Intelligence | Open source | Santa Clara, USA | $89.3M | 62 | |
| Appwrite | Enterprise | Open source · Self-hostable | San Francisco, United States | $37.0M | 61 | |
| Stytch | Authentication | Open source | San Francisco, USA | $127.0M | 61 | |
| Sourcegraph | Developer Tools | Open source | San Francisco, United States | $218.0M | 61 | |
| MIMintlify / mcpt | Developer Tools | Open source | San Francisco, United States | — | 57 | |
| BotCity | RPA | Open source | São Paulo, Brazil | $16.5M | 57 | |
| Baseten | MLOps | Open source | San Francisco, United States | $2.3B | 57 | |
| Diffblue | AI Coding Assistant | Open source | Oxford, United Kingdom | — | 55 | |
| Raycast | Productivity | Open source | London, United Kingdom | $17.7M | 55 | |
| Checksum | Test Automation | Open source | San Francisco, United States | — | 55 | |
| Graphite | AI Coding Assistant | Open source | San Francisco, United States | — | 55 | |
| Piiano | Enterprise | Open source | Tel Aviv, Israel | $9.0M | 54 | |
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 | |
| WireMock | Enterprise | Open source · Self-hostable | — | $6.5M | 54 | |
| BreezoMeter | Weather | Open source | — | $42.9M | 54 | |
| Lambdatest India Private Limited | MLOps | Open source | San Francisco, United States | — | 53 | |
| Svix | Enterprise | Open source | San Francisco, United States | $2.6M | 53 | |
| Lunar.dev | Enterprise | Open source | Tel Aviv, Israel | $6.0M | 53 | |
| Hyperspell | Agentic AI | Open source | San Francisco, United States | $1.5M | 52 | |
| D-Wave | Quantum Computing | Open source | Burnaby, Canada | — | 51 | |
| Permit.io | Identity Management | Open source | Tel Aviv, Israel | $14.0M | 51 | |
| Dub | MarTech | Open source | San Francisco, United States | $17.0M | 48 | |
| Inngest Inc. | Developer Tools | Open source | San Francisco, United States | $5.0M | 48 | |
| Arcade | Artificial Intelligence | Open source | San Francisco, USA | $60.0M | 48 | |
| ORY | Identity & Access Management | Open source · Self-hostable | Berlin, Germany | $17.0M | 47 | |
| cal.com | Scheduling Software | Open source · Self-hostable | Berlin, Germany | — | 47 | |
| Timefold | Artificial Intelligence | Open source | Amsterdam, Netherlands | $13.0M | 46 | |
| Bitloops | Developer Tools | Open source | Athens, Greece | $1.5M | 45 | |
| Amplication | Enterprise | Open source · Self-hostable | Tel Aviv, Israel | — | 44 | |
| Kiro IDE | Artificial Intelligence | Open source | San Francisco, United States | — | 44 | |
| Base44 | No Code | Open source | Tel Aviv, Israel | — | 44 | |
| Slauth.io | Enterprise | Open source · Self-hostable | Ashburn, United States | $1.5M | 43 | |
| Haystack | AI Search Engine | Open source | San Francisco, United States | $10.0M | 42 | |
| Orq.ai | Agentic AI | Open source | Amsterdam, Netherlands | $8.9M | 41 | |
| Responsive | Enterprise | Open source · Self-hostable | San Francisco, United States | — | 40 | |
| Co Build | AI Collaboration Tools | Open source | — | $8.5M | 40 | |
| STStrongLoop | API Platform | Open source · Self-hostable | San Mateo, United States | $9.0M | 38 | |
| Joulix AI Technologies | AI Tools & Apps | Open source | San Francisco, Israel | $2.3M | 35 | |
| MAMagic Patterns | Design Systems | Open source | San Francisco, United States | $9.0M | 31 | |
| QUBRID | Cloud Infrastructure | Open source | — | — | 30 | |
| Lawrence | Developer Tools | Open source | — | — | 27 | |
| Gemini CLI | AI Tools & Apps | Open source · Self-hostable | — | — | 27 | |
| Kantu | Workflow Automation | Open source · Self-hostable | — | — | 26 | |
| Node.js | Software Development | Open source · Self-hostable | — | — | 26 | |
| AI Governance | Open source | San Francisco, United States | — | 26 | ||
| Apigee | API Platform | Open source | San Jose, United States | $196.5M | 25 | |
| Swagger | API Development | Open source · Self-hostable | Somerville, United States | — | 24 |