Open source focus
Open Source Alternatives to Customer.io
60 open source Customer Engagement Platform options similar to Customer.io, 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.
Weave70Voice AILehi, United StatesOpen source
OneSignal61Customer Engagement PlatformSan Mateo, United States$57.0MOpen source
Akool47Generative AIPalo Alto, United States$40.0MOpen source
Crisp42Customer EngagementParis, FranceOpen source
AllAspect14MarketingOpen source
LeanmarketingMarTechOpen source
- TheknowsyCustomer Data Platform
Open source
Pendo66Product AnalyticsRaleigh, United States$458.5MOpen source
Resend64Developer ToolsSan Francisco, United States$3.0MOpen source
Twilio63SaaSSan Francisco, United States$130.0MOpen source
Warmly63Agentic AISan Francisco, United States$19.7MOpen source
Mindbody61SaaSSan Luis Obispo, United States$97.0MOpen source
- MAMailgun58SaaSSan Antonio, United States$50.0M
Open source
Delve AI53MarTechNew York, United States$33.5MOpen source
Fomo47Marketing AutomationAustin, United States$517.0MOpen source
Trackonomics43MarketingTel Aviv, Israel$1.4MOpen source
SuperPop42Generative AISan Francisco, United StatesOpen source
Sagarmatha35RetailOpen source
Melissa34Customer Data PlatformTel Aviv, Israel$2.0MOpen source
Dydas33Agentic AITel Aviv, IsraelOpen source
Gizzmo27MediaOpen source
Uzerz26AI EnablersOpen source
- Mightymob14Agentic AITel Aviv, Israel
Open source
OrionmediaAdTechOpen source
DarkmarketE-commerceOpen source
SteliausercontentGenerative AITel Aviv, IsraelOpen source
CultivateaiSales AutomationOpen source
Auto InflateGenerative AIOpen source
LozaraAgentic AITel Aviv, IsraelOpen source
ProjectadAdTechOpen source
Wix85WebsiteTel Aviv, Israel$1.3BOpen source
1Password85CybersecurityToronto, Canada$1.2BOpen source
Cvent85Event Management SoftwareTysons, United States$232.0MOpen source
- SPSPS Commerce85SaaSMinneapolis, United States$7.5M
Open source
Elementor79WebsiteRamat Gan, Israel$65.8MOpen source · Self-hostable
Okta79SaaSSan Francisco, United States$187.0MOpen source
ElevenLabs79AILondon, United Kingdom$1.6BOpen source
Alchemy76BlockchainSan Francisco, United States$450.0MOpen source
Octopus Energy76EnergyLondon, United Kingdom$800.0MOpen source
Hugging Face76AINew York, United States$395.2MOpen source · Self-hostable
Grafana Cloud74ObservabilityNew York, United States$2.1BOpen source · Self-hostable
- BABackblaze73SaaSSan Mateo, United States$13.0M
Open source
Stripe, Inc.73BillingSouth San Francisco, United States$11.4BOpen source
WorkOS71Developer ToolsSan Francisco, United States$198.0MOpen source
- LALacework70AISan Jose, United States$1.3B
Open source
PandaDoc70Document Management & eSignaturePhiladelphia, United StatesOpen source
Coframe70AI-Managed PlatformSan Francisco, United States$9.3MOpen source
XBOW69CybersecuritySeattle, United States$215.0MOpen source
Chargebee69FintechChennai, India$303.0MOpen source
QuickNode69BlockchainMiami, United States$95.0MOpen source
- UPUpvest69FintechBerlin, Germany$392.0M
Open source
Stripes AI68FintechSouth San Francisco, United States$25.4MOpen source
Paddle67FintechLondon, United Kingdom$318.0MOpen source
Chainalysis67FintechNew York, United States$170.0MOpen source
Pantheon Platform67WebOpsVancouver, CanadaOpen source · Self-hostable
- VEVeeva Systems67SaaSPleasanton, United States$7.0M
Open source
- HIHightouch66Data WarehouseSan Francisco, United States$150.0M
Open source
Phantom66FintechSan Francisco, United States$268.0MOpen source
Zendesk65Customer ServiceSan Francisco, United States$500KOpen source
WP Engine65InternetAustin, United States$251.2MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Weave | Voice AI | Open source | Lehi, United States | — | 70 |
| OneSignal | Customer Engagement Platform | Open source | San Mateo, United States | $57.0M | 61 |
| Akool | Generative AI | Open source | Palo Alto, United States | $40.0M | 47 |
| Crisp | Customer Engagement | Open source | Paris, France | — | 42 |
| AllAspect | Marketing | Open source | — | — | 14 |
| Leanmarketing | MarTech | Open source | — | — | — |
| Customer Data Platform | Open source | — | — | — | |
| Pendo | Product Analytics | Open source | Raleigh, United States | $458.5M | 66 |
| Resend | Developer Tools | Open source | San Francisco, United States | $3.0M | 64 |
| Twilio | SaaS | Open source | San Francisco, United States | $130.0M | 63 |
| Warmly | Agentic AI | Open source | San Francisco, United States | $19.7M | 63 |
| Mindbody | SaaS | Open source | San Luis Obispo, United States | $97.0M | 61 |
| MAMailgun | SaaS | Open source | San Antonio, United States | $50.0M | 58 |
| Delve AI | MarTech | Open source | New York, United States | $33.5M | 53 |
| 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 |
| Sagarmatha | Retail | Open source | — | — | 35 |
| Melissa | Customer Data Platform | Open source | Tel Aviv, Israel | $2.0M | 34 |
| Dydas | Agentic AI | Open source | Tel Aviv, Israel | — | 33 |
| Gizzmo | Media | Open source | — | — | 27 |
| Uzerz | AI Enablers | Open source | — | — | 26 |
| Agentic AI | Open source | Tel Aviv, Israel | — | 14 | |
| Orionmedia | AdTech | Open source | — | — | — |
| Darkmarket | E-commerce | Open source | — | — | — |
| Steliausercontent | Generative AI | Open source | Tel Aviv, Israel | — | — |
| Cultivateai | Sales Automation | Open source | — | — | — |
| Auto Inflate | Generative AI | Open source | — | — | — |
| Lozara | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Projectad | AdTech | Open source | — | — | — |
| Wix | Website | Open source | Tel Aviv, Israel | $1.3B | 85 |
| 1Password | Cybersecurity | Open source | Toronto, Canada | $1.2B | 85 |
| Cvent | Event Management Software | Open source | Tysons, United States | $232.0M | 85 |
| SPSPS Commerce | SaaS | Open source | Minneapolis, United States | $7.5M | 85 |
| Elementor | Website | Open source · Self-hostable | Ramat Gan, Israel | $65.8M | 79 |
| Okta | SaaS | Open source | San Francisco, United States | $187.0M | 79 |
| ElevenLabs | AI | Open source | London, United Kingdom | $1.6B | 79 |
| Alchemy | Blockchain | Open source | San Francisco, United States | $450.0M | 76 |
| 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 |
| Grafana Cloud | Observability | Open source · Self-hostable | New York, United States | $2.1B | 74 |
| BABackblaze | SaaS | Open source | San Mateo, United States | $13.0M | 73 |
| Stripe, Inc. | Billing | Open source | South San Francisco, United States | $11.4B | 73 |
| WorkOS | Developer Tools | Open source | San Francisco, United States | $198.0M | 71 |
| LALacework | AI | Open source | San Jose, United States | $1.3B | 70 |
| PandaDoc | Document Management & eSignature | Open source | Philadelphia, United States | — | 70 |
| Coframe | AI-Managed Platform | Open source | San Francisco, United States | $9.3M | 70 |
| XBOW | Cybersecurity | Open source | Seattle, United States | $215.0M | 69 |
| Chargebee | Fintech | Open source | Chennai, India | $303.0M | 69 |
| QuickNode | Blockchain | Open source | Miami, United States | $95.0M | 69 |
| UPUpvest | Fintech | Open source | Berlin, Germany | $392.0M | 69 |
| Stripes AI | Fintech | Open source | South San Francisco, United States | $25.4M | 68 |
| Paddle | Fintech | Open source | London, United Kingdom | $318.0M | 67 |
| Chainalysis | Fintech | Open source | New York, United States | $170.0M | 67 |
| Pantheon Platform | WebOps | Open source · Self-hostable | Vancouver, Canada | — | 67 |
| VEVeeva Systems | SaaS | Open source | Pleasanton, United States | $7.0M | 67 |
| HIHightouch | Data Warehouse | Open source | San Francisco, United States | $150.0M | 66 |
| Phantom | Fintech | Open source | San Francisco, United States | $268.0M | 66 |
| Zendesk | Customer Service | Open source | San Francisco, United States | $500K | 65 |
| WP Engine | Internet | Open source | Austin, United States | $251.2M | 65 |