Open source focus
Open Source Alternatives to Techstellar
60 open source AI Coding Assistant options similar to Techstellar, 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.
All-Hands AI50Agentic AIBoston, United States$5.0MOpen source · Self-hostable
Blacksmith Software35AI Coding AssistantSan Francisco, United States$15.0MOpen source
kuafuai8Agentic AIBeijing, ChinaOpen source
Sourcegraph (Cody)66AI Coding AssistantSan Francisco, United States$301.0MOpen source
cubic65Supply ChainTel Aviv, IsraelOpen source
Weights & Biases (W&B)63MLOpsSan Francisco, United States$521.0MOpen source
Graphite55AI Coding AssistantSan Francisco, United StatesOpen source
Bito54AI Coding AssistantSan Francisco, United States$5.7MOpen source
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
Aviator51MLOpsSan Francisco, United States$2.4MOpen source
nao Labs50Agentic AISan Francisco, United StatesOpen source
bolt.new49AI Coding AssistantSan Francisco, United StatesOpen source
- GRGreptile44AI Coding AssistantSan Francisco, United States$6.5M
Open source
Meshahid34AI Coding AssistantTel Aviv, Israel$1.5MOpen source
TensorZero29AI Coding AssistantSan Francisco, United States$7.3MOpen source
Magick AI28Agentic AIOpen source
Gemini CLI27AI Tools & AppsOpen source · Self-hostable
Kilo Code20Agentic AISan Francisco, United StatesOpen source · Self-hostable
Joeyydevops19MLOpsOpen source
CodeLane18AI Coding AssistantTel Aviv, IsraelOpen source
LLMStack15Agentic AIOpen source · Self-hostable
Google Gemini Code Assist9AI Coding AssistantMountain View, United StatesOpen source
CodeNut7Web3 DevelopmentOpen source
- HUHumanSignal7Agentic AI
Open source · Self-hostable
Batchfoundry5AI InfrastructureSan Francisco, United StatesOpen source
CyqlAgentic AIOpen source
QuarterlabsAI Coding AssistantSan Francisco, United StatesOpen source
AioncodeAI Coding AssistantTel Aviv, IsraelOpen source
Coworker.aiHR TechOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
Codeium71Artificial IntelligenceMountain View, United States$396.7MOpen source
Arize AI65AI ObservabilityBerkeley, United StatesOpen source
Dust65Agentic AIParis, France$15.0MOpen source
CopilotKit64Agentic AISan Francisco, United States$42.0MOpen source
Qodo64AI Coding AssistantTel Aviv, Israel$1.5MOpen source
Trigger Device Inc63AI AgentsLondon, United Kingdom$16.5MOpen source · Self-hostable
Entire62Artificial Intelligence$60.0MOpen source · Self-hostable
Embedder (YC S25)61AI AgentsSan Francisco, United States$625.0MOpen source
LangChain61Agentic AISan Francisco, United States$260.0MOpen source
Sourcegraph61Developer ToolsSan Francisco, United States$218.0MOpen source
Replicate60AI InfrastructureSan Francisco, United StatesOpen source
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Fal58Agentic AISan Francisco, United States$182.3MOpen source
Modular58AI InfrastructureSan Francisco, United States$380.0MOpen source
CodeRabbit56AI Coding AssistantTel Aviv, Israel$120.0MOpen source
Auto-GPT56Agentic AI$12.0MOpen source · Self-hostable
Diffblue55AI Coding AssistantOxford, United KingdomOpen source
LightningAI55AI InfrastructureSan Francisco, United StatesOpen source
Feast AI54MLOpsSan Francisco, United StatesOpen source · Self-hostable
- HYHyphen AI54AI InfrastructureSeattle, United States$36.5M
Open source
Toolbase54Developer ToolsSan Francisco, United StatesOpen source
MosaicML (now Databricks)54Foundation ModelSan Francisco, United States$3.0BOpen source
Korbit AI54AI Coding AssistantTel Aviv, IsraelOpen source
Langflow53Agentic AILisbon, PortugalOpen source · Self-hostable
RelAI51Agentic AISan Francisco, United States$10.0MOpen source · Self-hostable
Bauplanlabs49MLOpsSan Francisco, United StatesOpen source
Runpod49AI InfrastructureNew York, United StatesOpen source
Imbue47Artificial IntelligenceSan Francisco, United StatesOpen source
Glue46Agentic AISan Francisco, United States$4.2MOpen source · Self-hostable
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| All-Hands AI | Agentic AI | Open source · Self-hostable | Boston, United States | $5.0M | 50 | |
| Blacksmith Software | AI Coding Assistant | Open source | San Francisco, United States | $15.0M | 35 | |
| kuafuai | Agentic AI | Open source | Beijing, China | — | 8 | |
| Sourcegraph (Cody) | AI Coding Assistant | Open source | San Francisco, United States | $301.0M | 66 | |
| cubic | Supply Chain | Open source | Tel Aviv, Israel | — | 65 | |
| Weights & Biases (W&B) | MLOps | Open source | San Francisco, United States | $521.0M | 63 | |
| Graphite | AI Coding Assistant | Open source | San Francisco, United States | — | 55 | |
| Bito | AI Coding Assistant | Open source | San Francisco, United States | $5.7M | 54 | |
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 | |
| Aviator | MLOps | Open source | San Francisco, United States | $2.4M | 51 | |
| nao Labs | Agentic AI | Open source | San Francisco, United States | — | 50 | |
| bolt.new | AI Coding Assistant | Open source | San Francisco, United States | — | 49 | |
| GRGreptile | AI Coding Assistant | Open source | San Francisco, United States | $6.5M | 44 | |
| Meshahid | AI Coding Assistant | Open source | Tel Aviv, Israel | $1.5M | 34 | |
| TensorZero | AI Coding Assistant | Open source | San Francisco, United States | $7.3M | 29 | |
| Magick AI | Agentic AI | Open source | — | — | 28 | |
| Gemini CLI | AI Tools & Apps | Open source · Self-hostable | — | — | 27 | |
| Kilo Code | Agentic AI | Open source · Self-hostable | San Francisco, United States | — | 20 | |
| Joeyydevops | MLOps | Open source | — | — | 19 | |
| CodeLane | AI Coding Assistant | Open source | Tel Aviv, Israel | — | 18 | |
| LLMStack | Agentic AI | Open source · Self-hostable | — | — | 15 | |
| Google Gemini Code Assist | AI Coding Assistant | Open source | Mountain View, United States | — | 9 | |
| CodeNut | Web3 Development | Open source | — | — | 7 | |
| HUHumanSignal | Agentic AI | Open source · Self-hostable | — | — | 7 | |
| Batchfoundry | AI Infrastructure | Open source | San Francisco, United States | — | 5 | |
| Cyql | Agentic AI | Open source | — | — | — | |
| Quarterlabs | AI Coding Assistant | Open source | San Francisco, United States | — | — | |
| Aioncode | AI Coding Assistant | Open source | Tel Aviv, Israel | — | — | |
| Coworker.ai | HR Tech | Open source | — | — | — | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 | |
| Codeium | Artificial Intelligence | Open source | Mountain View, United States | $396.7M | 71 | |
| Arize AI | AI Observability | Open source | Berkeley, United States | — | 65 | |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 | |
| CopilotKit | Agentic AI | Open source | San Francisco, United States | $42.0M | 64 | |
| Qodo | AI Coding Assistant | Open source | Tel Aviv, Israel | $1.5M | 64 | |
| 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 | |
| Embedder (YC S25) | AI Agents | Open source | San Francisco, United States | $625.0M | 61 | |
| LangChain | Agentic AI | Open source | San Francisco, United States | $260.0M | 61 | |
| Sourcegraph | Developer Tools | Open source | San Francisco, United States | $218.0M | 61 | |
| Replicate | AI Infrastructure | Open source | San Francisco, United States | — | 60 | |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 | |
| Fal | Agentic AI | Open source | San Francisco, United States | $182.3M | 58 | |
| Modular | AI Infrastructure | Open source | San Francisco, United States | $380.0M | 58 | |
| CodeRabbit | AI Coding Assistant | Open source | Tel Aviv, Israel | $120.0M | 56 | |
| Auto-GPT | Agentic AI | Open source · Self-hostable | — | $12.0M | 56 | |
| Diffblue | AI Coding Assistant | Open source | Oxford, United Kingdom | — | 55 | |
| LightningAI | AI Infrastructure | Open source | San Francisco, United States | — | 55 | |
| Feast AI | MLOps | Open source · Self-hostable | San Francisco, United States | — | 54 | |
| HYHyphen AI | AI Infrastructure | Open source | Seattle, United States | $36.5M | 54 | |
| Toolbase | Developer Tools | Open source | San Francisco, United States | — | 54 | |
| MosaicML (now Databricks) | Foundation Model | Open source | San Francisco, United States | $3.0B | 54 | |
| Korbit AI | AI Coding Assistant | Open source | Tel Aviv, Israel | — | 54 | |
| Langflow | Agentic AI | Open source · Self-hostable | Lisbon, Portugal | — | 53 | |
| RelAI | Agentic AI | Open source · Self-hostable | San Francisco, United States | $10.0M | 51 | |
| Bauplanlabs | MLOps | Open source | San Francisco, United States | — | 49 | |
| Runpod | AI Infrastructure | Open source | New York, United States | — | 49 | |
| Imbue | Artificial Intelligence | Open source | San Francisco, United States | — | 47 | |
| Glue | Agentic AI | Open source · Self-hostable | San Francisco, United States | $4.2M | 46 |