Open source focus
StackBlitz is open source
Open Source Alternatives to StackBlitz
60 open source Developer Tools options similar to StackBlitz, 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.
- COCodeSandbox51Developer ToolsAmsterdam, Netherlands$15.2M
Open source
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
Kiro IDE44Artificial IntelligenceSan Francisco, United StatesOpen source
Lovable21AI App BuilderStockholm, SwedenOpen source
Google Gemini Code Assist9AI Coding AssistantMountain View, United StatesOpen source
- DemandintelligenceDeveloper ToolsSan Francisco, United States
Open source · Self-hostable
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Together AI76AI InfrastructureSan Francisco, United States$906.0MOpen source · Self-hostable
Codeium71Artificial IntelligenceMountain View, United States$396.7MOpen source
Vercel70Web DevelopmentSan Francisco, United States$687.5MOpen source
Sourcegraph (Cody)66AI Coding AssistantSan Francisco, United States$301.0MOpen source
cubic65Supply ChainTel Aviv, IsraelOpen source
Qodo64AI Coding AssistantTel Aviv, Israel$1.5MOpen source
RadixArk62Artificial IntelligencePalo Alto, USA$20.0MOpen source
Groundcover62ObservabilityTel Aviv, Israel$155.0MOpen source
Entire62Artificial Intelligence$60.0MOpen source · Self-hostable
Embedder (YC S25)61AI AgentsSan Francisco, United States$625.0MOpen source
Sourcegraph61Developer ToolsSan Francisco, United States$218.0MOpen source
Qovery60Developer ToolsParis, France$18.0MOpen source
FriendliAI57AI InfrastructureRedwood City, United States$89.0MOpen source
CodeRabbit56AI Coding AssistantTel Aviv, Israel$120.0MOpen source
Blaxel56Agentic AISan Francisco, United States$14.6MOpen source
Graphite55AI Coding AssistantSan Francisco, United StatesOpen source
LightningAI55AI InfrastructureSan Francisco, United StatesOpen source
Diffblue55AI Coding AssistantOxford, United KingdomOpen source
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
- HYHyphen AI54AI InfrastructureSeattle, United States$36.5M
Open source
MosaicML (now Databricks)54Foundation ModelSan Francisco, United States$3.0BOpen source
Bito54AI Coding AssistantSan Francisco, United States$5.7MOpen source
Korbit AI54AI Coding AssistantTel Aviv, IsraelOpen source
Aviator51MLOpsSan Francisco, United States$2.4MOpen source
Heroku50EnterpriseSan Francisco, United StatesOpen source
Brev50NeocloudSan Francisco, United States$3.3MOpen source
All-Hands AI50Agentic AIBoston, United States$5.0MOpen source · Self-hostable
nao Labs50Agentic AISan Francisco, United StatesOpen source
Runpod49AI InfrastructureNew York, United StatesOpen source
bolt.new49AI Coding AssistantSan Francisco, United StatesOpen source
Imbue47Artificial IntelligenceSan Francisco, United StatesOpen source
Seek AI46AI Coding AssistantTel Aviv, IsraelOpen source
Glue46Agentic AISan Francisco, United States$4.2MOpen source · Self-hostable
Alpic44AI InfrastructureParis, France$12.0MOpen source
- GRGreptile44AI Coding AssistantSan Francisco, United States$6.5M
Open source
Zerops43Cloud ComputingPrague, Czech Republic$2.5MOpen source
Blink41Agentic AISan Francisco, United StatesOpen source
Glitch37Developer ToolsNew York, United StatesOpen source · Self-hostable
Koala Ops35KubernetesSan Francisco, United StatesOpen source
Blacksmith Software35AI Coding AssistantSan Francisco, United States$15.0MOpen source
Meshahid34AI Coding AssistantTel Aviv, Israel$1.5MOpen source
Galaxy33Software DevelopmentNew York City, United States$2.0BOpen source
Firebase33Mobile DevelopmentSan Francisco, United States$5.0MOpen source
QUBRID30Cloud InfrastructureOpen source
TensorZero29AI Coding AssistantSan Francisco, United States$7.3MOpen source
Gemini CLI27AI Tools & AppsOpen source · Self-hostable
Quazzar Cloud21Self-HostingOpen source · Self-hostable
Kilo Code20Agentic AISan Francisco, United StatesOpen source · Self-hostable
Joeyydevops19MLOpsOpen source
CodeLane18AI Coding AssistantTel Aviv, IsraelOpen source
Openvisio18Developer ToolsOpen source
Augment Code13EnterpriseUnited StatesOpen source
OpenDevin11AI Agent PlatformOpen source · Self-hostable
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| COCodeSandbox | Developer Tools | Open source | Amsterdam, Netherlands | $15.2M | 51 | |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 | |
| Kiro IDE | Artificial Intelligence | Open source | San Francisco, United States | — | 44 | |
| Lovable | AI App Builder | Open source | Stockholm, Sweden | — | 21 | |
| Google Gemini Code Assist | AI Coding Assistant | Open source | Mountain View, United States | — | 9 | |
| Developer Tools | Open source · Self-hostable | San Francisco, United States | — | — | ||
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Together AI | AI Infrastructure | Open source · Self-hostable | San Francisco, United States | $906.0M | 76 | |
| Codeium | Artificial Intelligence | Open source | Mountain View, United States | $396.7M | 71 | |
| Vercel | Web Development | Open source | San Francisco, United States | $687.5M | 70 | |
| Sourcegraph (Cody) | AI Coding Assistant | Open source | San Francisco, United States | $301.0M | 66 | |
| cubic | Supply Chain | Open source | Tel Aviv, Israel | — | 65 | |
| Qodo | AI Coding Assistant | Open source | Tel Aviv, Israel | $1.5M | 64 | |
| RadixArk | Artificial Intelligence | Open source | Palo Alto, USA | $20.0M | 62 | |
| Groundcover | Observability | Open source | Tel Aviv, Israel | $155.0M | 62 | |
| Entire | Artificial Intelligence | Open source · Self-hostable | — | $60.0M | 62 | |
| Embedder (YC S25) | AI Agents | Open source | San Francisco, United States | $625.0M | 61 | |
| Sourcegraph | Developer Tools | Open source | San Francisco, United States | $218.0M | 61 | |
| Qovery | Developer Tools | Open source | Paris, France | $18.0M | 60 | |
| FriendliAI | AI Infrastructure | Open source | Redwood City, United States | $89.0M | 57 | |
| CodeRabbit | AI Coding Assistant | Open source | Tel Aviv, Israel | $120.0M | 56 | |
| Blaxel | Agentic AI | Open source | San Francisco, United States | $14.6M | 56 | |
| Graphite | AI Coding Assistant | Open source | San Francisco, United States | — | 55 | |
| LightningAI | AI Infrastructure | Open source | San Francisco, United States | — | 55 | |
| Diffblue | AI Coding Assistant | Open source | Oxford, United Kingdom | — | 55 | |
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 | |
| HYHyphen AI | AI Infrastructure | Open source | Seattle, United States | $36.5M | 54 | |
| MosaicML (now Databricks) | Foundation Model | Open source | San Francisco, United States | $3.0B | 54 | |
| Bito | AI Coding Assistant | Open source | San Francisco, United States | $5.7M | 54 | |
| Korbit AI | AI Coding Assistant | Open source | Tel Aviv, Israel | — | 54 | |
| Aviator | MLOps | Open source | San Francisco, United States | $2.4M | 51 | |
| Heroku | Enterprise | Open source | San Francisco, United States | — | 50 | |
| Brev | Neocloud | Open source | San Francisco, United States | $3.3M | 50 | |
| All-Hands AI | Agentic AI | Open source · Self-hostable | Boston, United States | $5.0M | 50 | |
| nao Labs | Agentic AI | Open source | San Francisco, United States | — | 50 | |
| Runpod | AI Infrastructure | Open source | New York, United States | — | 49 | |
| bolt.new | AI Coding Assistant | Open source | San Francisco, United States | — | 49 | |
| Imbue | Artificial Intelligence | Open source | San Francisco, United States | — | 47 | |
| Seek AI | AI Coding Assistant | Open source | Tel Aviv, Israel | — | 46 | |
| Glue | Agentic AI | Open source · Self-hostable | San Francisco, United States | $4.2M | 46 | |
| Alpic | AI Infrastructure | Open source | Paris, France | $12.0M | 44 | |
| GRGreptile | AI Coding Assistant | Open source | San Francisco, United States | $6.5M | 44 | |
| Zerops | Cloud Computing | Open source | Prague, Czech Republic | $2.5M | 43 | |
| Blink | Agentic AI | Open source | San Francisco, United States | — | 41 | |
| Glitch | Developer Tools | Open source · Self-hostable | New York, United States | — | 37 | |
| Koala Ops | Kubernetes | Open source | San Francisco, United States | — | 35 | |
| Blacksmith Software | AI Coding Assistant | Open source | San Francisco, United States | $15.0M | 35 | |
| Meshahid | AI Coding Assistant | Open source | Tel Aviv, Israel | $1.5M | 34 | |
| Galaxy | Software Development | Open source | New York City, United States | $2.0B | 33 | |
| Firebase | Mobile Development | Open source | San Francisco, United States | $5.0M | 33 | |
| QUBRID | Cloud Infrastructure | Open source | — | — | 30 | |
| TensorZero | AI Coding Assistant | Open source | San Francisco, United States | $7.3M | 29 | |
| Gemini CLI | AI Tools & Apps | Open source · Self-hostable | — | — | 27 | |
| Quazzar Cloud | Self-Hosting | Open source · Self-hostable | — | — | 21 | |
| 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 | |
| Openvisio | Developer Tools | Open source | — | — | 18 | |
| Augment Code | Enterprise | Open source | United States | — | 13 | |
| OpenDevin | AI Agent Platform | Open source · Self-hostable | — | — | 11 |