Open source focus
Open Source Alternatives to TaxSlayer Pro
60 open source TaxTech options similar to TaxSlayer Pro, 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.
LeaseAccelerator55Enterprise SoftwareAtlanta, United States$90.0MOpen source
Aemetis15Climate TechCupertino, United StatesOpen source · Self-hostable
FatturapaFintechOpen source
Forter85FintechNew York, United States$550.0MOpen source
Bloomberg L.P.82FintechNew York, United States$60.1BOpen source
StarkWare73BlockchainTel Aviv, Israel$180.0MOpen source
Orion Advisor Solutions67FintechOmaha, United States$223.0MOpen source
Workiva62Enterprise SoftwareAmes, United StatesOpen source
Antimetal60Infrastructure AutomationNew York, United States$24.3MOpen source
Ownera58BlockchainTel Aviv, Israel$20.0MOpen source · Self-hostable
OpenOps55EnterpriseSan Francisco, United States$125KOpen source · Self-hostable
Shopify55E-commerce PlatformOttawa, Canada$122.3MOpen source
Decentriq55CybersecurityZurich, Switzerland$23.8MOpen source
giniX54Generative AITel Aviv, IsraelOpen source
ICME54FintechNew York, United StatesOpen source
Dinero54FintechStockholm, Sweden$1.2MOpen source
Kima50BlockchainTel Aviv, Israel$6.7MOpen source
OpenLaw48LegalTechNew York, United States$6.8MOpen source
- KEKeeta Network47BlockchainSanta Monica, United States$34.0M
Open source
io.finnet47FintechTel Aviv, IsraelOpen source
Bluprynt47FintechNew York, United States$6.0MOpen source
T-REX44FintechNew York, United States$52.0MOpen source
Turnkey43Real Estate TechNew York, United States$30.0MOpen source
RTC36TransportationOmaha, United States$8.8MOpen source
Profitshare36FintechTel Aviv, IsraelOpen source
Astrasafe35AI GovernanceTel Aviv, Israel$1.5MOpen source
Hellofio32FintechTel Aviv, Israel$1.5MOpen source
Letscomply32Compliance AutomationTel Aviv, Israel$1.5MOpen source
Lava Payments29FintechLondon, United Kingdom$7.8MOpen source
Qanta.ai29Fintech$1.0MOpen source
finitiOne27Loyalty ProgramsOpen source
Upsonic19Developer ToolsLondon, United KingdomOpen source · Self-hostable
Dolibarr18Open SourceOpen source · Self-hostable
Kountertop17Vertical SaaSOpen source
Hycos AI15EnterpriseOpen source
Marssian14FintechTel Aviv, IsraelOpen source
Orminel14FintechOpen source
SourcingBot.com13IndustrialOpen source
ClousFintechOpen source
FicosysAI-Powered AutomationTel Aviv, IsraelOpen source
KurojiAgentic AISan Francisco, United StatesOpen source
VeritasforgeBlockchainLondon, EnglandOpen source
SafeforkCybersecurityTel Aviv, IsraelOpen source
- OpenkmsFintech
Open source
TaxladyFintechOpen source
AntennafundsFintechLondon, United KingdomOpen source
- LiansAgentic AI
Open source
RockyreefFintechOpen source
NvoicedFintechOpen source
AllcorFintechOpen source
CargodeckLogisticsTechOpen source
BridgefinanceFintechTel Aviv, IsraelOpen source
MarginsafeFintechOpen source
Ubuntu85Operating SystemsLondon, United Kingdom$63.0MOpen source · Self-hostable
New Relic85Enterprise SoftwareSan Francisco, United States$7.2BOpen source
1Password85CybersecurityToronto, Canada$1.2BOpen source
eToro85FintechLimassol, Cyprus$524.0MOpen source
Cvent85Event Management SoftwareTysons, United States$232.0MOpen source
Wix85WebsiteTel Aviv, Israel$1.3BOpen source
VAST Data85StorageNew York, United States$881.0MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| LeaseAccelerator | Enterprise Software | Open source | Atlanta, United States | $90.0M | 55 |
| Aemetis | Climate Tech | Open source · Self-hostable | Cupertino, United States | — | 15 |
| Fatturapa | Fintech | Open source | — | — | — |
| Forter | Fintech | Open source | New York, United States | $550.0M | 85 |
| Bloomberg L.P. | Fintech | Open source | New York, United States | $60.1B | 82 |
| StarkWare | Blockchain | Open source | Tel Aviv, Israel | $180.0M | 73 |
| Orion Advisor Solutions | Fintech | Open source | Omaha, United States | $223.0M | 67 |
| Workiva | Enterprise Software | Open source | Ames, United States | — | 62 |
| Antimetal | Infrastructure Automation | Open source | New York, United States | $24.3M | 60 |
| Ownera | Blockchain | Open source · Self-hostable | Tel Aviv, Israel | $20.0M | 58 |
| OpenOps | Enterprise | Open source · Self-hostable | San Francisco, United States | $125K | 55 |
| Shopify | E-commerce Platform | Open source | Ottawa, Canada | $122.3M | 55 |
| Decentriq | Cybersecurity | Open source | Zurich, Switzerland | $23.8M | 55 |
| giniX | Generative AI | Open source | Tel Aviv, Israel | — | 54 |
| ICME | Fintech | Open source | New York, United States | — | 54 |
| Dinero | Fintech | Open source | Stockholm, Sweden | $1.2M | 54 |
| Kima | Blockchain | Open source | Tel Aviv, Israel | $6.7M | 50 |
| OpenLaw | LegalTech | Open source | New York, United States | $6.8M | 48 |
| KEKeeta Network | Blockchain | Open source | Santa Monica, United States | $34.0M | 47 |
| io.finnet | Fintech | Open source | Tel Aviv, Israel | — | 47 |
| Bluprynt | Fintech | Open source | New York, United States | $6.0M | 47 |
| T-REX | Fintech | Open source | New York, United States | $52.0M | 44 |
| Turnkey | Real Estate Tech | Open source | New York, United States | $30.0M | 43 |
| RTC | Transportation | Open source | Omaha, United States | $8.8M | 36 |
| Profitshare | Fintech | Open source | Tel Aviv, Israel | — | 36 |
| Astrasafe | AI Governance | Open source | Tel Aviv, Israel | $1.5M | 35 |
| Hellofio | Fintech | Open source | Tel Aviv, Israel | $1.5M | 32 |
| Letscomply | Compliance Automation | Open source | Tel Aviv, Israel | $1.5M | 32 |
| Lava Payments | Fintech | Open source | London, United Kingdom | $7.8M | 29 |
| Qanta.ai | Fintech | Open source | — | $1.0M | 29 |
| finitiOne | Loyalty Programs | Open source | — | — | 27 |
| Upsonic | Developer Tools | Open source · Self-hostable | London, United Kingdom | — | 19 |
| Dolibarr | Open Source | Open source · Self-hostable | — | — | 18 |
| Kountertop | Vertical SaaS | Open source | — | — | 17 |
| Hycos AI | Enterprise | Open source | — | — | 15 |
| Marssian | Fintech | Open source | Tel Aviv, Israel | — | 14 |
| Orminel | Fintech | Open source | — | — | 14 |
| SourcingBot.com | Industrial | Open source | — | — | 13 |
| Clous | Fintech | Open source | — | — | — |
| Ficosys | AI-Powered Automation | Open source | Tel Aviv, Israel | — | — |
| Kuroji | Agentic AI | Open source | San Francisco, United States | — | — |
| Veritasforge | Blockchain | Open source | London, England | — | — |
| Safefork | Cybersecurity | Open source | Tel Aviv, Israel | — | — |
| Fintech | Open source | — | — | — | |
| Taxlady | Fintech | Open source | — | — | — |
| Antennafunds | Fintech | Open source | London, United Kingdom | — | — |
| Agentic AI | Open source | — | — | — | |
| Rockyreef | Fintech | Open source | — | — | — |
| Nvoiced | Fintech | Open source | — | — | — |
| Allcor | Fintech | Open source | — | — | — |
| Cargodeck | LogisticsTech | Open source | — | — | — |
| Bridgefinance | Fintech | Open source | Tel Aviv, Israel | — | — |
| Marginsafe | Fintech | Open source | — | — | — |
| Ubuntu | Operating Systems | Open source · Self-hostable | London, United Kingdom | $63.0M | 85 |
| New Relic | Enterprise Software | Open source | San Francisco, United States | $7.2B | 85 |
| 1Password | Cybersecurity | Open source | Toronto, Canada | $1.2B | 85 |
| eToro | Fintech | Open source | Limassol, Cyprus | $524.0M | 85 |
| Cvent | Event Management Software | Open source | Tysons, United States | $232.0M | 85 |
| Wix | Website | Open source | Tel Aviv, Israel | $1.3B | 85 |
| VAST Data | Storage | Open source | New York, United States | $881.0M | 85 |