Polygon.io vs Salsa
Polygon.io
Financial Market Data Built by Developers for Developers
43 employees · est. 2016 · Atlanta, United States
Polygon.io is the older company (2016 vs 2021); Salsa is the larger of the two.
1 signal in the last 90 days
Side-by-Side Comparison
| Metric | Polygon.io | Salsa |
|---|---|---|
| Founded | ||
| Founded | 2016 older | 2021 |
| Headquarters | ||
| Headquarters | Atlanta, United States | San Francisco, United States |
| Employees | ||
| Employees | 43 | 92 larger |
| Industry | ||
| Industry | API, Financial Services, Fintech | API, Fintech, Embedded Systems |
| Funding Stage | ||
| Funding Stage | Series A | Seed |
| Total Funding | ||
| Total Funding | $6.35M | $10.00M |
| Funding Rounds | ||
| Funding Rounds | 3 | 2 |
| Services | ||
| Services | providing financial market data through modernized APIs and flat files | Payroll Platform Development, Integrated Payroll Solutions, API-Driven Payroll Engineering, Flexible Accounting Integrations, Automated Taxation Features |
| Target Customers | ||
| Target Customers | developers, builders, founders, scholars, traders, financial app developers, and robo-advisory firms | SaaS Providers, Businesses in Workforce Management, Accounting Firms, Salon and Spa Industry, Developers Seeking Custom Solutions |
| Taxonomy | ||
| Taxonomy | Market Data APIsFinancial DataStock DataAlgorithmic TradingBig DataFinance +8 | Payroll InfrastructureAPISoftware PlatformsHR ToolsTime Tracking ToolsStaffing Agencies +6 |
| Website | ||
| Website | polygon.io | salsa.dev |
About Polygon.io
Polygon.io is a financial market data startup, with the mission to empower participation in the financial markets. Established in 2016 in the United States, Polygon.io offers fair access to market data through a developer-focused platform. The company received a significant $5.75M Series A investmen...
About Salsa
Salsa is a fintech startup founded in 2021, headquartered in the United States. The company's slogan, "Salsa's modern payroll infrastructure allows developers to launch a payroll product faster: in weeks, not quarters," reflects its focus on streamlining payroll services. Salsa aims to revolutionize...
Also comparing in this category
Comparing more than these two?
Get Polygon.io, Salsa and up to nine more competitors side by side in one PDF: team, funding, traffic and every dated move of the last six months. Every company is re-checked on the day you order.
How does Polygon.io compare?
A PDF of Polygon.io and up to 10 competitors you pick: team, funding, traffic and every dated move of the last 90 days. Each company is re-checked on the day you order, so it is current.
This takes a few seconds: we look beyond our own index too.
Frequently Asked Questions
Compare Polygon.io with someone else
Start typing a company name or domain.
Related Comparisons
Compiled from the BounceWatch company index. We last looked at Polygon.io on 24 Mar 2025, and Salsa on 29 Sep 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
