# Corelight Open NDR alternatives: what AI models name instead, October 2026

IT AI Recommendation Index, October 2026 Edition. 194 of the 252 answers in the 1 category where Corelight Open NDR holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://it-ai-index.com/vendors/corelight-open-ndr/alternatives/

## Named instead, most often (every category and segment added)

- ManageEngine NetFlow Analyzer: 17
- Security Onion: 15
- Vectra AI: 14
- Darktrace: 9
- Paessler PRTG Network Monitor: 9
- Sophos NDR: 7

## Network detection and response

**Small business**: 71 of 84 answers did not name Corelight Open NDR (Corelight Open NDR is #4 of 12 at 4%).

- Security Onion: first choice in 8 of those 71
- Sophos NDR: first choice in 7 of those 71
- Paessler PRTG Network Monitor: first choice in 6 of those 71
- ManageEngine NetFlow Analyzer: first choice in 5 of those 71
- Blumira: first choice in 2 of those 71
- Lumu Technologies: first choice in 2 of those 71
- Vectra AI: first choice in 2 of those 71
- Blackpoint Cyber: first choice in 1 of those 71

**Mid-market**: 63 of 84 answers did not name Corelight Open NDR (Corelight Open NDR is #4 of 9 at 4%).

- ManageEngine NetFlow Analyzer: first choice in 12 of those 63
- Security Onion: first choice in 7 of those 63
- Vectra AI: first choice in 6 of those 63
- ExtraHop Reveal: first choice in 3 of those 63
- Paessler PRTG Network Monitor: first choice in 3 of those 63
- Blumira: first choice in 2 of those 63
- Darktrace: first choice in 2 of those 63
- Gatewatcher AIonIQ: first choice in 2 of those 63

**Enterprise**: 60 of 84 answers did not name Corelight Open NDR (Corelight Open NDR is #4 of 7 at 6%).

- Darktrace: first choice in 7 of those 60
- Vectra AI: first choice in 6 of those 60
- Cisco Secure Network Analytics: first choice in 3 of those 60
- ExtraHop Reveal: first choice in 3 of those 60
- Kentik: first choice in 3 of those 60
- ExtraHop RevealX: first choice in 2 of those 60
- SolarWinds NetFlow Traffic Analyzer: first choice in 2 of those 60
- Arctic Wolf: first choice in 1 of those 60

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.