Open source focus
Open Source Alternatives to DDD Invoices
60 open source Fintech options similar to DDD Invoices, 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.
Alchemy76BlockchainSan Francisco, United States$450.0MOpen source
Stripe, Inc.72BillingSouth San Francisco, United States$11.4BOpen source
- UPUpvest69FintechBerlin, Germany$392.0M
Open source
Chargebee69FintechChennai, India$303.0MOpen source
Stripes AI68FintechSouth San Francisco, United States$25.4MOpen source
Paddle67FintechLondon, United Kingdom$318.0MOpen source
Chainalysis67FintechNew York, United States$170.0MOpen source
Phantom66FintechSan Francisco, United States$268.0MOpen source
Twilio63SaaSSan Francisco, United States$130.0MOpen source
XMTP63AISan Francisco, United States$49.9MOpen source
Dune Analytics62FintechOslo, Norway$79.4MOpen source
Alloy62FintechSan Francisco, United States$207.0MOpen source
- STStackOne62AILondon, United Kingdom$23.6M
Open source
Basis Theory62FintechMill Valley, United States$50.0MOpen source
Addepar61FintechNew York City, United States$412.1MOpen source
Fair Isaac Corporation (FICO)60Financial ServicesBozeman, United StatesOpen source
Skyflow58Data PrivacyPalo Alto, United States$100.0MOpen source
Altana58AINew York, United States$200.0MOpen source
LeaseAccelerator55Enterprise SoftwareAtlanta, United States$90.0MOpen source
Decentriq55CybersecurityZurich, Switzerland$23.8MOpen source
Crossmint54FintechMiami, United States$23.6MOpen source
OpenZeppelin54BlockchainSan Francisco, United States$37.4MOpen source
CipherOwl52FintechSan Francisco, United States$15.0MOpen source
Open Collective50FintechSan Francisco, United States$2.0MOpen source
- OPOpenfort49FintechBarcelona, Spain$3.0M
Open source
MOSTLY AI49AIVienna, Austria$25.0MOpen source
Request Finance49FintechSaint-Julien-en-Genevois, France$5.5MOpen source
Bluprynt47FintechNew York, United States$6.0MOpen source
Glide Identity45CybersecuritySan Francisco, United States$25.0MOpen source
T-REX44FintechNew York, United States$52.0MOpen source
t54 Labs41AIDublin, United States$5.0MOpen source
Cma Intelligence34FintechLondon, United Kingdom$1.0MOpen source
Coplane33Travel TechTel Aviv, Israel$16.8MOpen source
Letscomply32Compliance AutomationTel Aviv, Israel$1.5MOpen source
xpay28FintechBengaluru, IndiaOpen source
Airsave20FintechKampala, UgandaOpen source
Treza Labs10Privacy InfrastructureSan Francisco, United StatesOpen source
- ZEZeroDev10FintechNew York, United States$500K
Open source
x402station4AISan Francisco, United StatesOpen source
- LiansAgentic AI
Open source
Forter85FintechNew York, United States$550.0MOpen source
1Password85CybersecurityToronto, Canada$1.2BOpen source
eToro85FintechLimassol, Cyprus$524.0MOpen source
- SPSPS Commerce85SaaSMinneapolis, United States$7.5M
Open source
Cvent85Event Management SoftwareTysons, United States$232.0MOpen source
Bloomberg L.P.82FintechNew York, United States$60.1BOpen source
Okta79SaaSSan Francisco, United States$187.0MOpen source
ElevenLabs79AILondon, United Kingdom$1.6BOpen source
Hugging Face76AINew York, United States$395.2MOpen source · Self-hostable
Octopus Energy76EnergyLondon, United Kingdom$800.0MOpen source
Vanta75CybersecuritySan Francisco, United States$154.0MOpen source
Grafana Cloud74ObservabilityNew York, United States$2.1BOpen source · Self-hostable
Plaid74FintechSan Francisco, United States$734.3MOpen source
StarkWare73BlockchainTel Aviv, Israel$180.0MOpen source
Rapyd73PaymentsLondon, United Kingdom$1.3BOpen source
- BABackblaze73SaaSSan Mateo, United States$13.0M
Open source
Razorpay73FintechBengaluru, IndiaOpen source
Coinbase73FintechSan Francisco, United States$1.1BOpen source
WorkOS71Developer ToolsSan Francisco, United States$198.0MOpen source
- LALacework70AISan Jose, United States$1.3B
Open source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Alchemy | Blockchain | Open source | San Francisco, United States | $450.0M | 76 |
| Stripe, Inc. | Billing | Open source | South San Francisco, United States | $11.4B | 72 |
| UPUpvest | Fintech | Open source | Berlin, Germany | $392.0M | 69 |
| Chargebee | Fintech | Open source | Chennai, India | $303.0M | 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 |
| Phantom | Fintech | Open source | San Francisco, United States | $268.0M | 66 |
| Twilio | SaaS | Open source | San Francisco, United States | $130.0M | 63 |
| XMTP | AI | Open source | San Francisco, United States | $49.9M | 63 |
| Dune Analytics | Fintech | Open source | Oslo, Norway | $79.4M | 62 |
| Alloy | Fintech | Open source | San Francisco, United States | $207.0M | 62 |
| STStackOne | AI | Open source | London, United Kingdom | $23.6M | 62 |
| Basis Theory | Fintech | Open source | Mill Valley, United States | $50.0M | 62 |
| Addepar | Fintech | Open source | New York City, United States | $412.1M | 61 |
| Fair Isaac Corporation (FICO) | Financial Services | Open source | Bozeman, United States | — | 60 |
| Skyflow | Data Privacy | Open source | Palo Alto, United States | $100.0M | 58 |
| Altana | AI | Open source | New York, United States | $200.0M | 58 |
| LeaseAccelerator | Enterprise Software | Open source | Atlanta, United States | $90.0M | 55 |
| Decentriq | Cybersecurity | Open source | Zurich, Switzerland | $23.8M | 55 |
| Crossmint | Fintech | Open source | Miami, United States | $23.6M | 54 |
| OpenZeppelin | Blockchain | Open source | San Francisco, United States | $37.4M | 54 |
| CipherOwl | Fintech | Open source | San Francisco, United States | $15.0M | 52 |
| Open Collective | Fintech | Open source | San Francisco, United States | $2.0M | 50 |
| OPOpenfort | Fintech | Open source | Barcelona, Spain | $3.0M | 49 |
| MOSTLY AI | AI | Open source | Vienna, Austria | $25.0M | 49 |
| Request Finance | Fintech | Open source | Saint-Julien-en-Genevois, France | $5.5M | 49 |
| Bluprynt | Fintech | Open source | New York, United States | $6.0M | 47 |
| Glide Identity | Cybersecurity | Open source | San Francisco, United States | $25.0M | 45 |
| T-REX | Fintech | Open source | New York, United States | $52.0M | 44 |
| t54 Labs | AI | Open source | Dublin, United States | $5.0M | 41 |
| Cma Intelligence | Fintech | Open source | London, United Kingdom | $1.0M | 34 |
| Coplane | Travel Tech | Open source | Tel Aviv, Israel | $16.8M | 33 |
| Letscomply | Compliance Automation | Open source | Tel Aviv, Israel | $1.5M | 32 |
| xpay | Fintech | Open source | Bengaluru, India | — | 28 |
| Airsave | Fintech | Open source | Kampala, Uganda | — | 20 |
| Treza Labs | Privacy Infrastructure | Open source | San Francisco, United States | — | 10 |
| ZEZeroDev | Fintech | Open source | New York, United States | $500K | 10 |
| x402station | AI | Open source | San Francisco, United States | — | 4 |
| Agentic AI | Open source | — | — | — | |
| Forter | Fintech | Open source | New York, United States | $550.0M | 85 |
| 1Password | Cybersecurity | Open source | Toronto, Canada | $1.2B | 85 |
| eToro | Fintech | Open source | Limassol, Cyprus | $524.0M | 85 |
| SPSPS Commerce | SaaS | Open source | Minneapolis, United States | $7.5M | 85 |
| Cvent | Event Management Software | Open source | Tysons, United States | $232.0M | 85 |
| Bloomberg L.P. | Fintech | Open source | New York, United States | $60.1B | 82 |
| Okta | SaaS | Open source | San Francisco, United States | $187.0M | 79 |
| ElevenLabs | AI | Open source | London, United Kingdom | $1.6B | 79 |
| Hugging Face | AI | Open source · Self-hostable | New York, United States | $395.2M | 76 |
| Octopus Energy | Energy | Open source | London, United Kingdom | $800.0M | 76 |
| Vanta | Cybersecurity | Open source | San Francisco, United States | $154.0M | 75 |
| Grafana Cloud | Observability | Open source · Self-hostable | New York, United States | $2.1B | 74 |
| Plaid | Fintech | Open source | San Francisco, United States | $734.3M | 74 |
| StarkWare | Blockchain | Open source | Tel Aviv, Israel | $180.0M | 73 |
| Rapyd | Payments | Open source | London, United Kingdom | $1.3B | 73 |
| BABackblaze | SaaS | Open source | San Mateo, United States | $13.0M | 73 |
| Razorpay | Fintech | Open source | Bengaluru, India | — | 73 |
| Coinbase | Fintech | Open source | San Francisco, United States | $1.1B | 73 |
| WorkOS | Developer Tools | Open source | San Francisco, United States | $198.0M | 71 |
| LALacework | AI | Open source | San Jose, United States | $1.3B | 70 |