ACI Worldwide vs Fiserv Inc.
ACI Worldwide vs Fiserv Inc., compared side by side on 16 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: ACI Worldwide is on 25/100 and Fiserv Inc. on 77/100.
Where each one leads
ACI Worldwide
Leads on none of the measures we hold for both companies.
Fiserv Inc.
- our overall score: 77/100 against 25/100
- headcount: 33,292 against 4,942
- LinkedIn following: 917,100 against 174,682
At a glance
| Measure | ACI Worldwide | Fiserv Inc. |
|---|---|---|
| What it is | Global leader in real-time payment solutions for banks and merchants. | Global financial technology provider for banks, credit unions, merchants, and businesses. |
| Category | Fintech, Payments, Digital Payments, Real-time Payments | Banking Technology, Embedded Finance, Payments, Crypto Exchange |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Software | services | platform |
| Founded | 1975 | 1984 |
| Headquarters | Miami, United States | Milwaukee, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | ACI Worldwide | Fiserv Inc. |
|---|---|---|
| Employees | 4,942 | 33,292 |
| Headcount growthLast 12 months | Not published | +6.4% |
| Total funding | Not published | $300M |
| Latest round | Not published | Venture |
| Valuation | Not published | $45B |
| LinkedIn followers | 174,682 | 917,100 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | ACI Worldwide | Fiserv Inc. |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 25/100 | 77/100 |
| Traction | 20/100 | 60/100 |
| Team | 10/100 | 70/100 |
| Community | Not published | 15/100 |
| Search visibility | 37/100 | 46/100 |
| Quality | Not published | 92/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (41/100) | D (41/100) |
| Domain ratingLink authority, 0-100 | 77/100 | 83/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | ACI Worldwide | Fiserv Inc. |
|---|---|---|
| CDN | Cloudflare | Not detected |
| CMS | WordPress | Not detected |
| Frameworks | Jquery | Tailwind CSS |
| Analytics | Google Tag Manager | Not detected |
| Support stack | Not detected | HubSpot |
ACI Worldwide vs Fiserv Inc.: common questions
Which is better, ACI Worldwide or Fiserv Inc.?
On our 0-100 score Fiserv Inc. rates higher (77/100 against 25/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 16 data points above: read the rows that match what you are buying for.
How do ACI Worldwide and Fiserv Inc. compare on the numbers?
Fiserv Inc. leads on our overall score (77/100 against 25/100), headcount (33,292 against 4,942), LinkedIn following (917,100 against 174,682).
Read the full ACI Worldwide review and pricing or the Fiserv Inc. review and pricing. You can also browse other ACI Worldwide alternatives we track.

