Open source focus
Open Source Alternatives to Sitemark
60 open source Energy & Climate Tech options similar to Sitemark, 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.
Aemetis15Climate TechCupertino, United StatesOpen source · Self-hostable
GridvanceEnergy & Climate TechOpen source
D.A.A. Tech85Environmental ConsultingWindsor, United StatesOpen source
Crusoe Energy67Energy & Climate TechDenver, United States$610.0MOpen source
Anaergia63Energy & Climate TechBurlington, CanadaOpen source
EnergyX54Energy & Climate TechAustin, United StatesOpen source
Vivint Solar52Solar EnergyLehi, United StatesOpen source
Collos48Climate TechBoston, United States$1.1MOpen source
Voltfang40EV ChargingBerlin, Germany$15.0MOpen source
SmartGreen37IndustrialTel Aviv, Israel$3.0MOpen source
Suena Energy35Energy & Climate TechTel Aviv, Israel$10.1MOpen source
SolCold50CleantechTel Aviv, IsraelOpen source
agRE.tech28SolarTel Aviv, IsraelOpen source
AstronavisSpaceTechPalo Alto, United StatesOpen source
- GreencognitionClimate Tech
Open source
- RORoku85Media & EntertainmentSan Jose, United States$6.0M
Open source
WooCommerce (Automattic)79E-commerceSan Francisco, United States$815.7MOpen source · Self-hostable
Octopus Energy76EnergyLondon, United Kingdom$800.0MOpen source
Hugging Face76AINew York, United States$395.2MOpen source · Self-hostable
Google73InternetMountain View, United States$9.1BOpen source
Docker71SoftwareSan Francisco, USA$105.0MOpen source
Allbirds70Apparel & FashionSan Francisco, USA$150.0MOpen source
Expo70SoftwareSan Francisco, USA$45.0MOpen source
- MOMongoDB70Big DataNew York, USA$1.5B
Open source
Quantum Machines69Quantum ComputingTel Aviv, Israel$293.0MOpen source
XBOW69CybersecuritySeattle, United States$215.0MOpen source
Sysdig69CybersecuritySan Francisco, USA$608.0MOpen source
Stripes AI68FintechSouth San Francisco, United States$25.4MOpen source
Zenity66CybersecuritySan Francisco, United States$59.5MOpen source
Zendesk65Customer ServiceSan Francisco, United States$500KOpen source
WP Engine65InternetAustin, United States$251.2MOpen source
Oumi PBC64Artificial IntelligenceSan Francisco, USA$63.0MOpen source
Nagomi Security63CybersecuritySan Francisco, United States$30.0MOpen source
Domino Data Lab, Inc.63AI GovernanceNew York, United States$100.5MOpen source
FossID62SoftwareStockholm, Sweden$63.0MOpen source
NinjaOne62SoftwareAustin, United States$1.2BOpen source
Icometrix62HealthTechAntwerp, BelgiumOpen source
Intelligent Legal Solutions62LegalTechChicago, USA$55.9MOpen source
Workiva62Enterprise SoftwareAmes, United StatesOpen source
- RERelationalAI61Artificial IntelligenceBerkeley, United States$144.5M
Open source
Spacelift61Infrastructure as CodeWarsaw, Poland$73.6MOpen source
Fair Isaac Corporation (FICO)60Financial ServicesBozeman, United StatesOpen source
EOS Data Analytics60AgTechKyiv, UkraineOpen source
- NGNGINX60SoftwareSan Francisco, USA$56.0M
Open source
Absci60BiotechVancouver, United States$100.5MOpen source
Criteo59AdTechParis, France$63.4MOpen source
Specter Ops59CybersecurityAlexandria, United States$100.0MOpen source
Axiom Quant58Artificial IntelligenceSan Francisco, United States$264.0MOpen source
- SESeldon58Artificial IntelligenceLondon, United Kingdom$63.0M
Open source
Smartex.ai58Textile ManufacturingPorto, Portugal$24.7MOpen source
Linear57SoftwareSan Francisco, United States$134.0MOpen source
Backstage57Developer ToolsStockholm, Sweden$63.0MOpen source · Self-hostable
Boost Security57CybersecuritySan Francisco, USA$12.0MOpen source
Kubex56Cloud OptimizationToronto, Canada$45.0MOpen source
Scala Biodesign56Life SciencesTel Aviv, Israel$21.5MOpen source
- PIPico Immersive56Virtual RealityBeijing, China$397.1M
Open source
ZipBio55Life SciencesCambridge, United States$4.0MOpen source
CaPow55RoboticsTel Aviv, Israel$7.5MOpen source
Nordic Salt Cycle55Climate TechHelsinki, Finland$41.8MOpen source
Algaeing55TextileTel Aviv, Israel$12.0MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Aemetis | Climate Tech | Open source · Self-hostable | Cupertino, United States | — | 15 |
| Gridvance | Energy & Climate Tech | Open source | — | — | — |
| D.A.A. Tech | Environmental Consulting | Open source | Windsor, United States | — | 85 |
| Crusoe Energy | Energy & Climate Tech | Open source | Denver, United States | $610.0M | 67 |
| Anaergia | Energy & Climate Tech | Open source | Burlington, Canada | — | 63 |
| EnergyX | Energy & Climate Tech | Open source | Austin, United States | — | 54 |
| Vivint Solar | Solar Energy | Open source | Lehi, United States | — | 52 |
| Collos | Climate Tech | Open source | Boston, United States | $1.1M | 48 |
| Voltfang | EV Charging | Open source | Berlin, Germany | $15.0M | 40 |
| SmartGreen | Industrial | Open source | Tel Aviv, Israel | $3.0M | 37 |
| Suena Energy | Energy & Climate Tech | Open source | Tel Aviv, Israel | $10.1M | 35 |
| SolCold | Cleantech | Open source | Tel Aviv, Israel | — | 50 |
| agRE.tech | Solar | Open source | Tel Aviv, Israel | — | 28 |
| Astronavis | SpaceTech | Open source | Palo Alto, United States | — | — |
| Climate Tech | Open source | — | — | — | |
| RORoku | Media & Entertainment | Open source | San Jose, United States | $6.0M | 85 |
| WooCommerce (Automattic) | E-commerce | Open source · Self-hostable | San Francisco, United States | $815.7M | 79 |
| Octopus Energy | Energy | Open source | London, United Kingdom | $800.0M | 76 |
| Hugging Face | AI | Open source · Self-hostable | New York, United States | $395.2M | 76 |
| Google | Internet | Open source | Mountain View, United States | $9.1B | 73 |
| Docker | Software | Open source | San Francisco, USA | $105.0M | 71 |
| Allbirds | Apparel & Fashion | Open source | San Francisco, USA | $150.0M | 70 |
| Expo | Software | Open source | San Francisco, USA | $45.0M | 70 |
| MOMongoDB | Big Data | Open source | New York, USA | $1.5B | 70 |
| Quantum Machines | Quantum Computing | Open source | Tel Aviv, Israel | $293.0M | 69 |
| XBOW | Cybersecurity | Open source | Seattle, United States | $215.0M | 69 |
| Sysdig | Cybersecurity | Open source | San Francisco, USA | $608.0M | 69 |
| Stripes AI | Fintech | Open source | South San Francisco, United States | $25.4M | 68 |
| Zenity | Cybersecurity | Open source | San Francisco, United States | $59.5M | 66 |
| Zendesk | Customer Service | Open source | San Francisco, United States | $500K | 65 |
| WP Engine | Internet | Open source | Austin, United States | $251.2M | 65 |
| Oumi PBC | Artificial Intelligence | Open source | San Francisco, USA | $63.0M | 64 |
| Nagomi Security | Cybersecurity | Open source | San Francisco, United States | $30.0M | 63 |
| Domino Data Lab, Inc. | AI Governance | Open source | New York, United States | $100.5M | 63 |
| FossID | Software | Open source | Stockholm, Sweden | $63.0M | 62 |
| NinjaOne | Software | Open source | Austin, United States | $1.2B | 62 |
| Icometrix | HealthTech | Open source | Antwerp, Belgium | — | 62 |
| Intelligent Legal Solutions | LegalTech | Open source | Chicago, USA | $55.9M | 62 |
| Workiva | Enterprise Software | Open source | Ames, United States | — | 62 |
| RERelationalAI | Artificial Intelligence | Open source | Berkeley, United States | $144.5M | 61 |
| Spacelift | Infrastructure as Code | Open source | Warsaw, Poland | $73.6M | 61 |
| Fair Isaac Corporation (FICO) | Financial Services | Open source | Bozeman, United States | — | 60 |
| EOS Data Analytics | AgTech | Open source | Kyiv, Ukraine | — | 60 |
| NGNGINX | Software | Open source | San Francisco, USA | $56.0M | 60 |
| Absci | Biotech | Open source | Vancouver, United States | $100.5M | 60 |
| Criteo | AdTech | Open source | Paris, France | $63.4M | 59 |
| Specter Ops | Cybersecurity | Open source | Alexandria, United States | $100.0M | 59 |
| Axiom Quant | Artificial Intelligence | Open source | San Francisco, United States | $264.0M | 58 |
| SESeldon | Artificial Intelligence | Open source | London, United Kingdom | $63.0M | 58 |
| Smartex.ai | Textile Manufacturing | Open source | Porto, Portugal | $24.7M | 58 |
| Linear | Software | Open source | San Francisco, United States | $134.0M | 57 |
| Backstage | Developer Tools | Open source · Self-hostable | Stockholm, Sweden | $63.0M | 57 |
| Boost Security | Cybersecurity | Open source | San Francisco, USA | $12.0M | 57 |
| Kubex | Cloud Optimization | Open source | Toronto, Canada | $45.0M | 56 |
| Scala Biodesign | Life Sciences | Open source | Tel Aviv, Israel | $21.5M | 56 |
| PIPico Immersive | Virtual Reality | Open source | Beijing, China | $397.1M | 56 |
| ZipBio | Life Sciences | Open source | Cambridge, United States | $4.0M | 55 |
| CaPow | Robotics | Open source | Tel Aviv, Israel | $7.5M | 55 |
| Nordic Salt Cycle | Climate Tech | Open source | Helsinki, Finland | $41.8M | 55 |
| Algaeing | Textile | Open source | Tel Aviv, Israel | $12.0M | 55 |