**Rapid7 InsightVM vs Tenable (Nessus/Tenable VM)**
- Tenable provides clear public pricing for Nessus and entry-level Tenable VM purchases online, which can simplify budgeting.
- Rapid7’s published per-asset pricing is transparent, but the asset-minimum basis can disadvantage smaller buyers.
- Community commentary suggests both vendors can have conditional detection constraints depending on OS permissions and local file access for certain vulnerabilities.
**Rapid7 InsightVM vs Qualys VMDR**
- Qualys VMDR emphasizes a unified workflow (discover → assess → prioritize → patch) and positions itself as minimizing local software updates, while InsightVM commonly uses a console/engine architecture plus agents/collectors.
- Qualys often provides quote-based pricing; pricing outside specific channels is commonly handled via quotations.
**Independent "market share/mindshare" claims caution**
Third-party platforms that publish "mindshare" or activity-based rankings provide directional indicators rather than verified market share metrics.