cust.co / Compare / Zscaler vs Qualys

Zscaler vs Qualys - NRR head-to-head

Side-by-side Net Revenue Retention comparison sourced from SEC filings and earnings releases. Both compete in Security. Both at Public stage.

Zscaler leads by +11pp on latest NRR (115% vs 104%).

NRR over time

98%106%115%123%131% FY2018-Q3FY2019-Q4FY-2021FY2023-Q3FY2024-Q1FY2024-Q4FY2025-Q3FY2026-Q1FY2024-Q2 NRR Zscaler Qualys Zscaler - FY2018-Q3: 125% Zscaler - FY-2018: 117% Zscaler - FY-2019: 118% Zscaler - FY2019-Q4: 120% Zscaler - FY-2020: 116% Zscaler - FY2020-Q4: 122% Zscaler - FY-2021: 127% Zscaler - FY-2022: 125% Zscaler - FY2023-Q2: 125% Zscaler - FY2023-Q3: 125% Zscaler - FY2023-Q4: 125% Zscaler - FY-2023: 121% Zscaler - FY2024-Q1: 125% Zscaler - FY2024-Q3: 116% Zscaler - FY-2024: 116% Zscaler - FY2024-Q4: 116% Zscaler - FY2025-Q1: 114% Zscaler - FY2025-Q2: 115% Zscaler - FY2025-Q3: 114% Zscaler - FY2025-Q4: 114% Zscaler - FY-2025: 114% Zscaler - FY2026-Q1: 115% Zscaler - FY2026-Q3: 115% Qualys - FY2024-Q3: 103% Qualys - FY-2024: 103% Qualys - FY2024-Q4: 103% Qualys - FY2025-Q1: 103% Qualys - FY2025-Q2: 104% Qualys - FY2025-Q3: 104% Qualys - FY2025-Q4: 103% Qualys - FY-2025: 103% Qualys - FY2026-Q1: 104% Qualys - FY2024-Q2: 102%

Zscaler hit a higher all-time peak (127% in FY-2021).

Stat-by-stat

Metric Zscaler Qualys
Latest NRR 115% 104%
All-time peak NRR 127% 104%
All-time low NRR 114% 102%
QoQ change +0pp +1pp
YoY change +1pp +0pp
3-year change -10pp -
Disclosures tracked 23 10

Customer cohorts

MetricZscalerQualys
Total customers 9,400 10,000
Over $100K ARR 4,003 -
Over $1M ARR 748 -
Top-10 concentration - -
Average ACV - -
US revenue mix 56% 55%

Commercial structure

MetricZscalerQualys
Total RPO $6.5B $466M
Current RPO (12mo) $3.0B $212M
Multi-year contracts - -
Avg contract length 48 mo -
Subscription rev mix - 100%
New customers added - -

Post-sales motion

MetricZscalerQualys
CS team size - -
Customers per CSM - -
Pricing model subscription subscription
Renewal cadence multi-year annual
CSM coverage model account-named hybrid
Top customer exec - -

How does your NRR stack up?

Compute yours in 30 seconds. Get a live retention report showing where you stack up, your expansion gap, and which public companies sit closest to your numbers.