Open source focus
Open Source Alternatives to Lemlist
60 open source Sales Engagement Platform options similar to Lemlist, 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.
InnosalesSales Engagement PlatformTel Aviv, IsraelOpen source
LeadrySales IntelligenceOpen source
Warmly63Agentic AISan Francisco, United States$19.7MOpen source
Firstprinciplesgtm33Agentic AISan Francisco, United StatesOpen source
Dydas33Agentic AITel Aviv, IsraelOpen source
Airfleet20MarketingOpen source
RE2320Real EstateNew York, United StatesOpen source
SalesNav11Sales IntelligenceOpen source
ThedistributionContent DistributionOpen source
CultivateaiSales AutomationOpen source
GeminatorGenerative AIOpen source
ParnexAffiliate MarketingOpen source
ResenaCustomer ReviewsOpen source
FwrapGenerative AITel Aviv, IsraelOpen source
LeadersagencyAgentic AITel Aviv, IsraelOpen source
Auto InflateGenerative AIOpen source
- LeadtekWeb Design
Open source
LeadgroveAI SDROpen source
RecruitmailHR TechOpen source
- DuogrowE-commerceTel Aviv, Israel
Open source
DigicardsDigital Business CardsLeicester, EnglandOpen source
- AigrowwContent Creation AI
Open source
- AdjarGenerative AITel Aviv, Israel
Open source
GilloGenerative AILondon, United KingdomOpen source
SlopbyslopGenerative AIOpen source
BellepropertyProptechOpen source
GetcutGenerative AIOpen source
PinarliAgentic AITel Aviv, IsraelOpen source
Wix85WebsiteTel Aviv, Israel$1.3BOpen source
Stripe, Inc.72BillingSouth San Francisco, United States$11.4BOpen source
Coframe70AI-Managed PlatformSan Francisco, United States$9.3MOpen source
Resend64Developer ToolsSan Francisco, United States$3.0MOpen source
Kyruus63HealthTechBoston, United States$35.0MOpen source
Mindbody61SaaSSan Luis Obispo, United States$97.0MOpen source
OneSignal61Customer Engagement PlatformSan Mateo, United States$57.0MOpen source
Intruder60CybersecurityLondon, United Kingdom$63.0MOpen source
Apify60Web ScrapingPrague, Czech Republic$3.5MOpen source
Netskope58CybersecuritySanta Clara, United States$1.5BOpen source
Harri58HR TechNew York, United States$80.0MOpen source
Iyzico58FintechIstanbul, Turkey$30.6MOpen source
Addressable57Web3San Francisco, United States$13.5MOpen source
Belkin Vision56HealthcareGeneva, Switzerland$38.5MOpen source
BitPay56FintechAtlanta, United StatesOpen source
Catena Labs56Agentic AISan Francisco, United States$36.0MOpen source
Mappedin55Real Estate TechWaterloo, Canada$56.6MOpen source
Spotlight.ai55EnterpriseTel Aviv, Israel$1.0MOpen source
Interai54Enterprise$13.3MOpen source
Banked53FintechLondon, United Kingdom$2.0MOpen source
Ghost53Publishing PlatformSingapore, Singapore$7.4MOpen source · Self-hostable
Delve AI53MarTechNew York, United States$33.5MOpen source
- APAppknox52CybersecuritySingapore, Singapore$63.0M
Open source
SugarCRM49CRM & Sales SoftwareSan Francisco, United States$86.5MOpen source · Self-hostable
Bitwarden48CybersecuritySanta Barbara, United States$130.0MOpen source · Self-hostable
Akool47Generative AIPalo Alto, United States$40.0MOpen source
Fomo47Marketing AutomationAustin, United States$517.0MOpen source
Trackonomics43MarketingTel Aviv, Israel$1.4MOpen source
SuperPop42Generative AISan Francisco, United StatesOpen source
Crisp42Customer EngagementParis, FranceOpen source
- ATAttio41CRMLondon, United Kingdom$93.5M
Open source
Credbull40FintechTel Aviv, Israel$1.5MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Innosales | Sales Engagement Platform | Open source | Tel Aviv, Israel | — | — |
| Leadry | Sales Intelligence | Open source | — | — | — |
| Warmly | Agentic AI | Open source | San Francisco, United States | $19.7M | 63 |
| Firstprinciplesgtm | Agentic AI | Open source | San Francisco, United States | — | 33 |
| Dydas | Agentic AI | Open source | Tel Aviv, Israel | — | 33 |
| Airfleet | Marketing | Open source | — | — | 20 |
| RE23 | Real Estate | Open source | New York, United States | — | 20 |
| SalesNav | Sales Intelligence | Open source | — | — | 11 |
| Thedistribution | Content Distribution | Open source | — | — | — |
| Cultivateai | Sales Automation | Open source | — | — | — |
| Geminator | Generative AI | Open source | — | — | — |
| Parnex | Affiliate Marketing | Open source | — | — | — |
| Resena | Customer Reviews | Open source | — | — | — |
| Fwrap | Generative AI | Open source | Tel Aviv, Israel | — | — |
| Leadersagency | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Auto Inflate | Generative AI | Open source | — | — | — |
| Web Design | Open source | — | — | — | |
| Leadgrove | AI SDR | Open source | — | — | — |
| Recruitmail | HR Tech | Open source | — | — | — |
| E-commerce | Open source | Tel Aviv, Israel | — | — | |
| Digicards | Digital Business Cards | Open source | Leicester, England | — | — |
| Content Creation AI | Open source | — | — | — | |
| Generative AI | Open source | Tel Aviv, Israel | — | — | |
| Gillo | Generative AI | Open source | London, United Kingdom | — | — |
| Slopbyslop | Generative AI | Open source | — | — | — |
| Belleproperty | Proptech | Open source | — | — | — |
| Getcut | Generative AI | Open source | — | — | — |
| Pinarli | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Wix | Website | Open source | Tel Aviv, Israel | $1.3B | 85 |
| Stripe, Inc. | Billing | Open source | South San Francisco, United States | $11.4B | 72 |
| Coframe | AI-Managed Platform | Open source | San Francisco, United States | $9.3M | 70 |
| Resend | Developer Tools | Open source | San Francisco, United States | $3.0M | 64 |
| Kyruus | HealthTech | Open source | Boston, United States | $35.0M | 63 |
| Mindbody | SaaS | Open source | San Luis Obispo, United States | $97.0M | 61 |
| OneSignal | Customer Engagement Platform | Open source | San Mateo, United States | $57.0M | 61 |
| Intruder | Cybersecurity | Open source | London, United Kingdom | $63.0M | 60 |
| Apify | Web Scraping | Open source | Prague, Czech Republic | $3.5M | 60 |
| Netskope | Cybersecurity | Open source | Santa Clara, United States | $1.5B | 58 |
| Harri | HR Tech | Open source | New York, United States | $80.0M | 58 |
| Iyzico | Fintech | Open source | Istanbul, Turkey | $30.6M | 58 |
| Addressable | Web3 | Open source | San Francisco, United States | $13.5M | 57 |
| Belkin Vision | Healthcare | Open source | Geneva, Switzerland | $38.5M | 56 |
| BitPay | Fintech | Open source | Atlanta, United States | — | 56 |
| Catena Labs | Agentic AI | Open source | San Francisco, United States | $36.0M | 56 |
| Mappedin | Real Estate Tech | Open source | Waterloo, Canada | $56.6M | 55 |
| Spotlight.ai | Enterprise | Open source | Tel Aviv, Israel | $1.0M | 55 |
| Interai | Enterprise | Open source | — | $13.3M | 54 |
| Banked | Fintech | Open source | London, United Kingdom | $2.0M | 53 |
| Ghost | Publishing Platform | Open source · Self-hostable | Singapore, Singapore | $7.4M | 53 |
| Delve AI | MarTech | Open source | New York, United States | $33.5M | 53 |
| APAppknox | Cybersecurity | Open source | Singapore, Singapore | $63.0M | 52 |
| SugarCRM | CRM & Sales Software | Open source · Self-hostable | San Francisco, United States | $86.5M | 49 |
| Bitwarden | Cybersecurity | Open source · Self-hostable | Santa Barbara, United States | $130.0M | 48 |
| Akool | Generative AI | Open source | Palo Alto, United States | $40.0M | 47 |
| Fomo | Marketing Automation | Open source | Austin, United States | $517.0M | 47 |
| Trackonomics | Marketing | Open source | Tel Aviv, Israel | $1.4M | 43 |
| SuperPop | Generative AI | Open source | San Francisco, United States | — | 42 |
| Crisp | Customer Engagement | Open source | Paris, France | — | 42 |
| ATAttio | CRM | Open source | London, United Kingdom | $93.5M | 41 |
| Credbull | Fintech | Open source | Tel Aviv, Israel | $1.5M | 40 |