Open source focus
Open Source Alternatives to Knowmail
60 open source Messaging options similar to Knowmail, 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.
Viktor62Artificial IntelligenceWarsaw, Poland$64.7MOpen source
SageOx47Artificial IntelligenceSeattle, USA$15.0MOpen source
Qanta.ai29Fintech$1.0MOpen source
SapmindsEnterprise SoftwareLondon, United KingdomOpen source
InstalleraiIT InfrastructureOpen source
KedmahConversational AITel Aviv, IsraelOpen source
- ProcureraaProcurement Software
Open source
Forter85FintechNew York, United States$550.0MOpen source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
WekaIO70ComputingCampbell, United States$565.0MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
LogicGate Risk Cloud68GRCChicago, United States$269.0MOpen source
ClickUp67Project ManagementSan Francisco, United States$531.5MOpen source
ClearML64AutoMLTel Aviv, Israel$11.0MOpen source · Self-hostable
Orkes62Artificial IntelligenceSanta Clara, USA$89.3MOpen source
Comet ML62MLOpsNew York, United States$69.8MOpen source
- RIRiffle Resilience62Artificial IntelligenceDallas, USA$63.0M
Open source
Dataiku60Artificial IntelligenceNew York, United States$200.0MOpen source
timeOS56PersonalSan Francisco, United States$3.3MOpen source
Spotlight.ai55EnterpriseTel Aviv, Israel$1.0MOpen source
OpsMill55Artificial IntelligencePalo Alto, USA$26.0MOpen source
Raycast55ProductivityLondon, United Kingdom$17.7MOpen source
M Magical54Artificial IntelligenceSan Francisco, United StatesOpen source
- HOHOOTL54Artificial IntelligenceCharlottesville, USA$6.5M
Open source
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
Featherless.ai48Artificial IntelligenceSan Francisco, USA$20.0MOpen source · Self-hostable
Frenn44EnterpriseOpen source
- Co Build40AI Collaboration Tools$8.5M
Open source
- GUGuide Labs35Artificial IntelligenceSan Francisco, USA$9.5M
Open source
Joulix AI Technologies35AI Tools & AppsSan Francisco, Israel$2.3MOpen source
PromptQL31Artificial IntelligenceSan Francisco, United StatesOpen source · Self-hostable
Madars18Workflow AutomationOpen source
- KIKira Systems10LegalTechToronto, Canada
Open source
- XMxMemory10Artificial IntelligenceLondon, United Kingdom
Open source
- HUHumanSignal7Agentic AI
Open source · Self-hostable
- BendalGenerative AI
Open source
EngraneDocument AIMexico City, MexicoOpen source
Ai SquareEdge AIParis, FranceOpen source
CintriusDocument AIOpen source
- MfglogicSmart Manufacturing
Open source
CircularaiAI InfrastructureOpen source
FlonaseAI SolutionsOpen source
MachinesuiteIndustrial AutomationOpen source
Kairos6AI AgentOpen source
ProductexAI SolutionsOpen source
QuoresWorkflow AutomationStourbridge, EnglandOpen source
NvoicedFintechOpen source
GlovityAI InfrastructureOpen source
ValorautomationWorkflow AutomationOpen source
LetscConversational AIOpen source
Ubuntu85Operating SystemsLondon, United Kingdom$63.0MOpen source · Self-hostable
Cvent85Event Management SoftwareTysons, United States$232.0MOpen source
New Relic85Enterprise SoftwareSan Francisco, United States$7.2BOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
DeepL82Artificial IntelligenceCologne, Germany$300.0MOpen source
Databricks82Data AnalyticsSan Francisco, United States$31.7BOpen source · Self-hostable
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
Manus AI75Agentic AISingapore, Singapore$150.0MOpen source
Temporal71Workflow AutomationSeattle, United States$134.0MOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Viktor | Artificial Intelligence | Open source | Warsaw, Poland | $64.7M | 62 |
| SageOx | Artificial Intelligence | Open source | Seattle, USA | $15.0M | 47 |
| Qanta.ai | Fintech | Open source | — | $1.0M | 29 |
| Sapminds | Enterprise Software | Open source | London, United Kingdom | — | — |
| Installerai | IT Infrastructure | Open source | — | — | — |
| Kedmah | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Procurement Software | Open source | — | — | — | |
| Forter | Fintech | Open source | New York, United States | $550.0M | 85 |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 |
| WekaIO | Computing | Open source | Campbell, United States | $565.0M | 70 |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 |
| LogicGate Risk Cloud | GRC | Open source | Chicago, United States | $269.0M | 68 |
| ClickUp | Project Management | Open source | San Francisco, United States | $531.5M | 67 |
| ClearML | AutoML | Open source · Self-hostable | Tel Aviv, Israel | $11.0M | 64 |
| Orkes | Artificial Intelligence | Open source | Santa Clara, USA | $89.3M | 62 |
| Comet ML | MLOps | Open source | New York, United States | $69.8M | 62 |
| RIRiffle Resilience | Artificial Intelligence | Open source | Dallas, USA | $63.0M | 62 |
| Dataiku | Artificial Intelligence | Open source | New York, United States | $200.0M | 60 |
| timeOS | Personal | Open source | San Francisco, United States | $3.3M | 56 |
| Spotlight.ai | Enterprise | Open source | Tel Aviv, Israel | $1.0M | 55 |
| OpsMill | Artificial Intelligence | Open source | Palo Alto, USA | $26.0M | 55 |
| Raycast | Productivity | Open source | London, United Kingdom | $17.7M | 55 |
| M Magical | Artificial Intelligence | Open source | San Francisco, United States | — | 54 |
| HOHOOTL | Artificial Intelligence | Open source | Charlottesville, USA | $6.5M | 54 |
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 |
| Featherless.ai | Artificial Intelligence | Open source · Self-hostable | San Francisco, USA | $20.0M | 48 |
| Frenn | Enterprise | Open source | — | — | 44 |
| AI Collaboration Tools | Open source | — | $8.5M | 40 | |
| GUGuide Labs | Artificial Intelligence | Open source | San Francisco, USA | $9.5M | 35 |
| Joulix AI Technologies | AI Tools & Apps | Open source | San Francisco, Israel | $2.3M | 35 |
| PromptQL | Artificial Intelligence | Open source · Self-hostable | San Francisco, United States | — | 31 |
| Madars | Workflow Automation | Open source | — | — | 18 |
| KIKira Systems | LegalTech | Open source | Toronto, Canada | — | 10 |
| XMxMemory | Artificial Intelligence | Open source | London, United Kingdom | — | 10 |
| HUHumanSignal | Agentic AI | Open source · Self-hostable | — | — | 7 |
| Generative AI | Open source | — | — | — | |
| Engrane | Document AI | Open source | Mexico City, Mexico | — | — |
| Ai Square | Edge AI | Open source | Paris, France | — | — |
| Cintrius | Document AI | Open source | — | — | — |
| Smart Manufacturing | Open source | — | — | — | |
| Circularai | AI Infrastructure | Open source | — | — | — |
| Flonase | AI Solutions | Open source | — | — | — |
| Machinesuite | Industrial Automation | Open source | — | — | — |
| Kairos6 | AI Agent | Open source | — | — | — |
| Productex | AI Solutions | Open source | — | — | — |
| Quores | Workflow Automation | Open source | Stourbridge, England | — | — |
| Nvoiced | Fintech | Open source | — | — | — |
| Glovity | AI Infrastructure | Open source | — | — | — |
| Valorautomation | Workflow Automation | Open source | — | — | — |
| Letsc | Conversational AI | Open source | — | — | — |
| Ubuntu | Operating Systems | Open source · Self-hostable | London, United Kingdom | $63.0M | 85 |
| Cvent | Event Management Software | Open source | Tysons, United States | $232.0M | 85 |
| 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 |
| DeepL | Artificial Intelligence | Open source | Cologne, Germany | $300.0M | 82 |
| Databricks | Data Analytics | Open source · Self-hostable | San Francisco, United States | $31.7B | 82 |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 |
| Manus AI | Agentic AI | Open source | Singapore, Singapore | $150.0M | 75 |
| Temporal | Workflow Automation | Open source | Seattle, United States | $134.0M | 71 |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 |