Summary Verdict
QLYS: 4—ACIW: 1wins
Rule of 40
55.6QLYS
28.0ACIW
check_circleQLYS leads
Revenue Growth
10.1%QLYS
10.4%ACIW
check_circleACIW leads
Gross Margin
83%QLYS
49%ACIW
check_circleQLYS leads
FCF Margin
45.5%QLYS
17.6%ACIW
check_circleQLYS leads
Operating Margin
33.2%QLYS
18.8%ACIW
check_circleQLYS leads
NRR
—QLYS
—ACIW
Metric
Rule of 40Efficiency score
QLYS
55.6check_circle
ACIW
28.0
Revenue GrowthYoY
QLYS
10.1%
ACIW
10.4%check_circle
Gross Margin% of revenue
QLYS
83%check_circle
ACIW
49%
FCF MarginFree cash flow
QLYS
45.5%check_circle
ACIW
17.6%
Operating MarginGAAP
QLYS
33.2%check_circle
ACIW
18.8%
NRRNet retention
QLYS
N/A
ACIW
N/A
EV / RevenueValuation multiple
QLYS
N/A
ACIW
N/A
Market CapUSD
QLYS
N/A
ACIW
N/A
ARR GrowthYoY
QLYS
N/A
ACIW
N/A
CAC PaybackMonths to recover
QLYS
N/A
ACIW
N/A
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insights
Analysis
As of Q4 2025, QUALYS, INC. trades at N/A EV/Revenue versus ACI WORLDWIDE, INC. at N/A. On the Rule of 40, QUALYS, INC. scores 55.6 compared to ACI WORLDWIDE, INC.'s 28.0, placing QUALYS, INC. ahead in operating efficiency. Gross margins stand at QUALYS, INC. 83% vs ACI WORLDWIDE, INC. 49%.
Sector Context
Both companies operate in the Vertical SaaS sector. The median columns above show where each company stands relative to their peers.