Open source focus
Open Source Alternatives to Emailsend
60 open source Cold Email Software options similar to Emailsend, 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.
LeadersagencyAgentic AITel Aviv, IsraelOpen source
CultivateaiSales AutomationOpen source
LairaosFoundation ModelLondon, United KingdomOpen source
Warmly63Agentic AISan Francisco, United States$19.7MOpen source
Dydas33Agentic AITel Aviv, IsraelOpen source
360sprint4Agentic AITel Aviv, IsraelOpen source
- KlozioAgentic AISan Francisco, United States
Open source
CowpokeAI AgentOpen source
ImpulsiaConversational AIOpen source
TradetribeAgentic AITel Aviv, IsraelOpen source
BellepropertyProptechOpen source
ChatirlConversational AITel Aviv, IsraelOpen source
PinarliAgentic AITel Aviv, IsraelOpen source
Hightouch70Customer Data PlatformSan Francisco, United States$322.0MOpen source
- OBOBOt AI49Conversational AITel Aviv, Israel$5.0M
Open source
- SASales Interaction Agent47Agentic AISan Francisco, United States$5.0M
Open source
Outlit45Agentic AI$500KOpen source
Tryagentically40Agentic AISan Francisco, United StatesOpen source
- RERefold AI39Customer Service AutomationLondon, United Kingdom$6.5M
Open source
Postiz37Agentic AITel Aviv, Israel$1.0MOpen source
Aengus35Conversational AISan Francisco, United StatesOpen source
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
GrackerAI33Agentic SEOTel Aviv, IsraelOpen source
Firstprinciplesgtm33Agentic AISan Francisco, United StatesOpen source
Raincheck AI28Agentic AISan Francisco, United StatesOpen source
Lionwire17Voice AIOpen source
- Mightymob14Agentic AITel Aviv, Israel
Open source
AllAspect14MarketingOpen source
Onenexa14Conversational AIOpen source
Darim14Conversational AIOpen source
Reworkd13Agentic AITel Aviv, IsraelOpen source
Slopbyslop6Generative AIOpen source
Airevl4Agentic AISan Francisco, United StatesOpen source
Auto InflateGenerative AIOpen source
PipclawAI AgentOpen source
InnosalesSales Engagement PlatformTel Aviv, IsraelOpen source
FlintgptConversational AIOpen source
Instant365Conversational AITel Aviv, IsraelOpen source
MaiqaConversational AIOpen source
DomulisConversational AILondon, United KingdomOpen source
RenteragentProptechTel Aviv, IsraelOpen source
CallrichVoice AIOpen source
SubioConversational AITel Aviv, IsraelOpen source
MoriwaConversational AIOpen source
LiveitallAgentic AIOpen source
RevulaConversational AITel Aviv, IsraelOpen source
ZentokConversational AITel Aviv, IsraelOpen source
B2upAgentic AITel Aviv, IsraelOpen source
OghomesAgentic AITel Aviv, IsraelOpen source
LeadgroveAI SDROpen source
AllfoliosFintechLondon, United KingdomOpen source
GetpointVoice AITel Aviv, IsraelOpen source
- Chisp TechnologiesConversational AITel Aviv, Israel
Open source
GhoztAgentic AIOpen source
AgentwarroomAgentic AIMiami, United StatesOpen source
GetcutGenerative AIOpen source
Mister WolfAgentic AITel Aviv, IsraelOpen source
XallarapConversational AIOpen source
ResenaCustomer ReviewsOpen source
RitonaAI AgentTel Aviv, IsraelOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Leadersagency | Agentic AI | Open source | Tel Aviv, Israel | — | — | |
| Cultivateai | Sales Automation | Open source | — | — | — | |
| Lairaos | Foundation Model | Open source | London, United Kingdom | — | — | |
| Warmly | Agentic AI | Open source | San Francisco, United States | $19.7M | 63 | |
| Dydas | Agentic AI | Open source | Tel Aviv, Israel | — | 33 | |
| 360sprint | Agentic AI | Open source | Tel Aviv, Israel | — | 4 | |
| Agentic AI | Open source | San Francisco, United States | — | — | ||
| Cowpoke | AI Agent | Open source | — | — | — | |
| Impulsia | Conversational AI | Open source | — | — | — | |
| Tradetribe | Agentic AI | Open source | Tel Aviv, Israel | — | — | |
| Belleproperty | Proptech | Open source | — | — | — | |
| Chatirl | Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Pinarli | Agentic AI | Open source | Tel Aviv, Israel | — | — | |
| Hightouch | Customer Data Platform | Open source | San Francisco, United States | $322.0M | 70 | |
| OBOBOt AI | Conversational AI | Open source | Tel Aviv, Israel | $5.0M | 49 | |
| SASales Interaction Agent | Agentic AI | Open source | San Francisco, United States | $5.0M | 47 | |
| Outlit | Agentic AI | Open source | — | $500K | 45 | |
| Tryagentically | Agentic AI | Open source | San Francisco, United States | — | 40 | |
| RERefold AI | Customer Service Automation | Open source | London, United Kingdom | $6.5M | 39 | |
| Postiz | Agentic AI | Open source | Tel Aviv, Israel | $1.0M | 37 | |
| Aengus | Conversational AI | Open source | San Francisco, United States | — | 35 | |
| Callbravo | Voice AI | Open source | Tel Aviv, Israel | $1.5M | 34 | |
| GrackerAI | Agentic SEO | Open source | Tel Aviv, Israel | — | 33 | |
| Firstprinciplesgtm | Agentic AI | Open source | San Francisco, United States | — | 33 | |
| Raincheck AI | Agentic AI | Open source | San Francisco, United States | — | 28 | |
| Lionwire | Voice AI | Open source | — | — | 17 | |
| Agentic AI | Open source | Tel Aviv, Israel | — | 14 | ||
| AllAspect | Marketing | Open source | — | — | 14 | |
| Onenexa | Conversational AI | Open source | — | — | 14 | |
| Darim | Conversational AI | Open source | — | — | 14 | |
| Reworkd | Agentic AI | Open source | Tel Aviv, Israel | — | 13 | |
| Slopbyslop | Generative AI | Open source | — | — | 6 | |
| Airevl | Agentic AI | Open source | San Francisco, United States | — | 4 | |
| Auto Inflate | Generative AI | Open source | — | — | — | |
| Pipclaw | AI Agent | Open source | — | — | — | |
| Innosales | Sales Engagement Platform | Open source | Tel Aviv, Israel | — | — | |
| Flintgpt | Conversational AI | Open source | — | — | — | |
| Instant365 | Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Maiqa | Conversational AI | Open source | — | — | — | |
| Domulis | Conversational AI | Open source | London, United Kingdom | — | — | |
| Renteragent | Proptech | Open source | Tel Aviv, Israel | — | — | |
| Callrich | Voice AI | Open source | — | — | — | |
| Subio | Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Moriwa | Conversational AI | Open source | — | — | — | |
| Liveitall | Agentic AI | Open source | — | — | — | |
| Revula | Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Zentok | Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| B2up | Agentic AI | Open source | Tel Aviv, Israel | — | — | |
| Oghomes | Agentic AI | Open source | Tel Aviv, Israel | — | — | |
| Leadgrove | AI SDR | Open source | — | — | — | |
| Allfolios | Fintech | Open source | London, United Kingdom | — | — | |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — | |
| Conversational AI | Open source | Tel Aviv, Israel | — | — | ||
| Ghozt | Agentic AI | Open source | — | — | — | |
| Agentwarroom | Agentic AI | Open source | Miami, United States | — | — | |
| Getcut | Generative AI | Open source | — | — | — | |
| Mister Wolf | Agentic AI | Open source | Tel Aviv, Israel | — | — | |
| Xallarap | Conversational AI | Open source | — | — | — | |
| Resena | Customer Reviews | Open source | — | — | — | |
| Ritona | AI Agent | Open source | Tel Aviv, Israel | — | — |