Best Attack Surface Management Software in 2026
Updated
In short: Qualys External Attack Surface Management is ranked #1 of 28 as of 4 October 2026, ahead of runZero and FullHunt. The best-ranked option with a free plan is runZero. The lowest first paid tier on this page is Bitdefender Total Security at $5/mo.
Attack surface management tools help you track and assess the digital assets exposed to potential threats. Compare API access and asset limits alongside external and cloud asset discovery, attack-path analysis, and monitoring frequency. Free-plan availability and paid-from pricing offer further points to weigh. The entries are ordered as a ranked best-of list, starting with Detectify Surface Monitoring, FullHunt, and Censys Attack Surface Management, followed by ZeroFox Attack Surface Intelligence and CTM360. Consider which discovery and monitoring capabilities suit the assets you need to oversee, and whether the listed limits and access options fit your requirements.
28 attack surface management software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
3 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | Qualys External Attack Surface ManagementWeb · Linux · API | Two bars | — | 2 of 6 | — | 6.5 | |
| 2 | runZeroWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 6.5 | |
| 3 | FullHuntWeb · API | Two bars | — | 1 of 6 | $149/mo | 6.4 | |
| 4 | Bitdefender Total SecurityWindows · Mac · Android · iPhone | Two bars | — | — | 4 of 6 | $5/mo | 5.7 |
| 5 | ImmuniWebWeb · Android · iPhone · API | Two bars | — | — | 3 of 6 | €49.58/mo | 5.6 |
| 6 | Censys Attack Surface ManagementWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 7 | Check Point External Risk ManagementWindows · Mac · Linux | One bar | — | — | 3 of 6 | — | 5.4 |
| 8 | Ivanti Neurons for Zero Trust AccessWeb · Windows · Mac · Linux · Android · iPhone · Self-hosted | Two bars | — | — | 6 of 6 | — | 5.4 |
| 9 | Outpost24 Attack Surface ManagementWeb · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 10 | SOCRadar Extended Threat Intelligence PlatformWeb · API | One bar | — | — | 1 of 6 | $379.17/mo | 5.4 |
| 11 | ZeroFox Attack Surface IntelligenceWeb · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 12 | OWASP AmassWindows · Mac · Linux | One bar | — | — | 3 of 6 | — | 5.3 |
| 13 | Armis Centrix for Attack Surface ManagementWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 14 | AttackIQ PlatformWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 15 | Bugcrowd External Attack Surface ManagementWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 16 | CrowdStrike Falcon SurfaceWeb · Windows · Mac · Linux | Two bars | — | — | 4 of 6 | — | 5.2 |
| 17 | CTM360Web | No signal | — | — | 1 of 6 | — | 5.2 |
| 18 | Detectify Surface MonitoringWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 19 | Rapid7 Surface CommandWeb · Windows · Mac · Linux · API | Two bars | — | — | 4 of 6 | — | 5.2 |
| 20 | Tenable One Attack Surface ManagementWeb · Windows · Mac · Linux | Two bars | — | — | 4 of 6 | — | 5.2 |
| 21 | EASMLensWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 22 | Bitsight External Attack Surface ManagementWeb · API | One bar | — | — | 1 of 6 | — | 5.0 |
| 23 | CyCognito PlatformWeb · API | One bar | — | — | 1 of 6 | — | 5.0 |
| 24 | Group-IB Attack Surface ManagementWeb · API | One bar | — | — | 1 of 6 | — | 5.0 |
| 25 | HadrianWeb | One bar | — | — | 1 of 6 | — | 4.9 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which attack surface management software is ranked first on Freedom251?
Qualys External Attack Surface Management is ranked #1 of 28 with a score of 6.5. runZero is second and FullHunt third.
How many of these have a free plan?
2 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Bitdefender Total Security has the lowest first paid tier we found: $5/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation. Paid placements never change a rank.