Open source focus
Open Source Alternatives to sunbay.io
60 open source Fintech options similar to sunbay.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.
Credbull40FintechTel Aviv, Israel$1.5MOpen source
Brexia34FintechSan Francisco, United StatesOpen source
Qanta.ai29Fintech$1.0MOpen source
NvoicedFintechOpen source
Stripe, Inc.72BillingSouth San Francisco, United States$11.4BOpen source
Chargebee69FintechChennai, India$303.0MOpen source
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
Iyzico58FintechIstanbul, Turkey$30.6MOpen source
Catena Labs56Agentic AISan Francisco, United States$36.0MOpen source
BitPay56FintechAtlanta, United StatesOpen source
Banked53FintechLondon, United Kingdom$2.0MOpen source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
- OBoBot.ai45Conversational AITel Aviv, Israel$3.5M
Open source
Clara Ai40Conversational AISan Francisco, United StatesOpen source
FrontSpin38Sales TechnologySan Diego, United StatesOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen source
finitiOne27Loyalty ProgramsOpen source
Bluemoney24FintechTel Aviv, IsraelOpen source
Traditional Payment Gateways (Stripe, PayPal)23FintechSan Francisco, United StatesOpen source
Tryledger21FintechOpen source
Etherwaves AI14Conversational AIOpen source
evo.ninja12Agentic AIOpen source
Appquest2Conversational AITel Aviv, IsraelOpen source
RenteragentProptechTel Aviv, IsraelOpen source
IntervyouAI AgentOpen source
KedmahConversational AITel Aviv, IsraelOpen source
ZedareFintechOpen source
DomulisConversational AILondon, United KingdomOpen source
FatturapaFintechOpen source
Forter85FintechNew York, United States$550.0MOpen source
Plaid74FintechSan Francisco, United States$734.3MOpen source
Razorpay73FintechBengaluru, IndiaOpen source
Rapyd73PaymentsLondon, United Kingdom$1.3BOpen source
Weave70Voice AILehi, United StatesOpen source
Kyutai69Frontier AI LabParis, France$300.0MOpen source · Self-hostable
Stripes AI68FintechSouth San Francisco, United States$25.4MOpen source
Paddle67FintechLondon, United Kingdom$318.0MOpen source
Orion Advisor Solutions67FintechOmaha, United States$223.0MOpen source
Deepgram65NeocloudSan Francisco, United States$177.1MOpen source
Vapi65Voice AISan Francisco, United States$74.3MOpen source
Mercury64FintechSan Francisco, United States$500.0MOpen source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Rewire63FintechTel Aviv, Israel$57.0MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Rasa Technologies GmbH62Conversational AISan Francisco, United States$73.4MOpen source
Wirex62FintechLondon, United Kingdom$15.0MOpen source
Afterpay61FintechMelbourne, Australia$1.0BOpen source
Shift4 Europe61FintechAllentown, United States$160.0MOpen source
Solana61BlockchainSan Francisco, United States$195.5MOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
- ARARCH60Document / Data ManagementNew York, United States$20.0M
Open source
Mollie60FintechAmsterdam, Netherlands$870.0MOpen source
Cluely58Agentic AISan Francisco, United StatesOpen source
RevenueCat57FintechSan Francisco, United States$50.0MOpen source
Paid57Agentic AISan Francisco, United States$21.0MOpen source
Nomi57AI CopilotSan Francisco, United States$180.0MOpen source
BasisTheory55FintechSan Francisco, United States$17.0MOpen source
Volt55FintechLondon, United Kingdom$140.0MOpen source
Spotlight.ai55EnterpriseTel Aviv, Israel$1.0MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Credbull | Fintech | Open source | Tel Aviv, Israel | $1.5M | 40 |
| Brexia | Fintech | Open source | San Francisco, United States | — | 34 |
| Qanta.ai | Fintech | Open source | — | $1.0M | 29 |
| Nvoiced | Fintech | Open source | — | — | — |
| Stripe, Inc. | Billing | Open source | South San Francisco, United States | $11.4B | 72 |
| Chargebee | Fintech | Open source | Chennai, India | $303.0M | 69 |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 |
| Iyzico | Fintech | Open source | Istanbul, Turkey | $30.6M | 58 |
| Catena Labs | Agentic AI | Open source | San Francisco, United States | $36.0M | 56 |
| BitPay | Fintech | Open source | Atlanta, United States | — | 56 |
| Banked | Fintech | Open source | London, United Kingdom | $2.0M | 53 |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 |
| OBoBot.ai | Conversational AI | Open source | Tel Aviv, Israel | $3.5M | 45 |
| Clara Ai | Conversational AI | Open source | San Francisco, United States | — | 40 |
| FrontSpin | Sales Technology | Open source | San Diego, United States | — | 38 |
| Thenvoi AI Ltd | Conversational AI | Open source | London, United Kingdom | — | 31 |
| finitiOne | Loyalty Programs | Open source | — | — | 27 |
| Bluemoney | Fintech | Open source | Tel Aviv, Israel | — | 24 |
| Traditional Payment Gateways (Stripe, PayPal) | Fintech | Open source | San Francisco, United States | — | 23 |
| Tryledger | Fintech | Open source | — | — | 21 |
| Etherwaves AI | Conversational AI | Open source | — | — | 14 |
| evo.ninja | Agentic AI | Open source | — | — | 12 |
| Appquest | Conversational AI | Open source | Tel Aviv, Israel | — | 2 |
| Renteragent | Proptech | Open source | Tel Aviv, Israel | — | — |
| Intervyou | AI Agent | Open source | — | — | — |
| Kedmah | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Zedare | Fintech | Open source | — | — | — |
| Domulis | Conversational AI | Open source | London, United Kingdom | — | — |
| Fatturapa | Fintech | Open source | — | — | — |
| Forter | Fintech | Open source | New York, United States | $550.0M | 85 |
| Plaid | Fintech | Open source | San Francisco, United States | $734.3M | 74 |
| Razorpay | Fintech | Open source | Bengaluru, India | — | 73 |
| Rapyd | Payments | Open source | London, United Kingdom | $1.3B | 73 |
| Weave | Voice AI | Open source | Lehi, United States | — | 70 |
| Kyutai | Frontier AI Lab | Open source · Self-hostable | Paris, France | $300.0M | 69 |
| Stripes AI | Fintech | Open source | South San Francisco, United States | $25.4M | 68 |
| Paddle | Fintech | Open source | London, United Kingdom | $318.0M | 67 |
| Orion Advisor Solutions | Fintech | Open source | Omaha, United States | $223.0M | 67 |
| Deepgram | Neocloud | Open source | San Francisco, United States | $177.1M | 65 |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 |
| Mercury | Fintech | Open source | San Francisco, United States | $500.0M | 64 |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 |
| Rewire | Fintech | Open source | Tel Aviv, Israel | $57.0M | 63 |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 |
| Rasa Technologies GmbH | Conversational AI | Open source | San Francisco, United States | $73.4M | 62 |
| Wirex | Fintech | Open source | London, United Kingdom | $15.0M | 62 |
| Afterpay | Fintech | Open source | Melbourne, Australia | $1.0B | 61 |
| Shift4 Europe | Fintech | Open source | Allentown, United States | $160.0M | 61 |
| Solana | Blockchain | Open source | San Francisco, United States | $195.5M | 61 |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 |
| ARARCH | Document / Data Management | Open source | New York, United States | $20.0M | 60 |
| Mollie | Fintech | Open source | Amsterdam, Netherlands | $870.0M | 60 |
| Cluely | Agentic AI | Open source | San Francisco, United States | — | 58 |
| RevenueCat | Fintech | Open source | San Francisco, United States | $50.0M | 57 |
| Paid | Agentic AI | Open source | San Francisco, United States | $21.0M | 57 |
| Nomi | AI Copilot | Open source | San Francisco, United States | $180.0M | 57 |
| BasisTheory | Fintech | Open source | San Francisco, United States | $17.0M | 55 |
| Volt | Fintech | Open source | London, United Kingdom | $140.0M | 55 |
| Spotlight.ai | Enterprise | Open source | Tel Aviv, Israel | $1.0M | 55 |