Subnetlens
Subnetlens is a local-first Windows desktop app for network discovery, LAN monitoring, and IT troubleshooting. It scans and classifies devices, builds an interactive topology map, tracks per-device port and service history, listens for mDNS/SSDP device activity in real time, and includes 26 built-in diagnostic tools such as ping, traceroute, DNS lookup, port scan, WHOIS, GeoIP, TLS checks, HTTP header inspection, and more. Pro features include Radar monitoring, Prometheus metrics, scheduled scans, risk scoring, HTML reports, IPAM, webhooks, encrypted credential vault, SNMP topology, and multi-network profiles. Scan data stays on the user's machine unless they explicitly export it, enable webhooks, or expose the Prometheus endpoint. Subnetlens is built and code-signed by HELIOSOFT LTD and is available as a free version with an optional $79 one-time Pro license.
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AlmaLinux
An open source, community-owned and governed, forever-free enterprise Linux distribution, focused on long-term stability, providing a robust production-grade platform. AlmaLinux OS is 1:1 binary compatible with RHEL® and pre-Stream CentOS. Our GitHub organization contains source code and tools used to build AlmaLinux OS and related infrastructure. Join our vibrant Reddit community, interact with other AlmaLinux OS users, receive updates, find and provide help. Join a real time discussion with other AlmaLinux OS community members, governance team and AlmaLinux OS developers. Ask questions, get answers and contribute community support to others in AlmaLinux OS community and developers alike. As a standalone, completely free OS, AlmaLinux OS enjoys $1M in annual sponsorship from CloudLinux Inc and support from other sponsors. Ongoing development efforts are governed by the members of the community.
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Paessler PRTG
Paessler PRTG is an all-inclusive monitoring software solution developed by Paessler. Equipped with an easy-to-use, intuitive interface with a cutting-edge monitoring engine, PRTG optimizes connections and workloads as well as reduces operational costs by avoiding outages while saving time and controlling service level agreements (SLAs). The solution is packed with specialized monitoring features that include flexible alerting, cluster failover solution, distributed monitoring, in-depth reporting, maps and dashboards, and more.
PRTG monitors your entire IT infrastructure. All important technologies are supported:
• SNMP: ready-to-use and custom options
• WMI and Windows Performance Counters
• SSH: for Linux/Unix and macOS systems
• Traffic analysis using flow protocols or packet sniffing
• HTTP requests
• REST APIs returning XML or JSON
• Ping, SQL, and many more
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Obkio
Obkio is a network monitoring software, observability and diagnostics platform that gives IT teams, MSPs, and network engineers full visibility into network performance, from the office to the cloud. As a leading Network Performance Monitoring (NPM) tool, Obkio deploys lightweight monitoring agents at any location to continuously track latency, jitter, packet loss, and bandwidth, and run Visual Traceroutes across the entire network path.
Obkio supports SD-WAN, MPLS, VoIP/UC, and multi-site network monitoring, plus application performance monitoring (APM) with HTTP, Web, and Teams tests. With Obkio Insight, diagnostics are automated, helping teams pinpoint whether issues originate in-house, with an ISP, or a third-party service, and hold providers accountable with real data.
Fast to deploy with no hardware required, Obkio turns network data into clear diagnostics and insights. Helping teams reduce downtime, validate SLAs, and prove the performance they're paying for.
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