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LeanSentry
AI-powered IIS & ASP.NET App Monitoring Diagnostics
SubscriptionDevOps249 impressions#116 of its week
LeanSentry provides AI-powered monitoring and automatic diagnostics for IIS and ASP.NET apps.
- for
- Ops and dev teams running IIS/ASP.NET production workloads
- pricing
- paid · free trial
Key features
- External low-overhead monitoring — Collects data from IIS logs, performance counters, WMI and ETW without agents or profilers.
- Automatic issue detection — Detects hangs, high CPU, memory leaks, crashes and provides code-level root cause.
- Full-stack error tracking — Shows errors across IIS, ASP.NET, HTTP.SYS and application exceptions.
- Performance analysis — Analyzes threading, lock contention, queueing and GC to suggest optimizations.
- On-premise deployment — Option to host LeanSentry inside a locked-down environment with no outbound traffic.
- Alerting & reporting — Sends notifications for slow pages, errors, low memory, high CPU and provides detailed diagnostics.
Use cases
- Identify and fix a production hang caused by ASP.NET thread pool exhaustion.
- Diagnose a memory leak on the Large Object Heap and reduce GC pressure.
- Detect high CPU hot paths in code and optimize them to lower server costs.
- Capture crash dumps from worker process failures for offline debugging.
LeanSentry pricing
- Lite$49/mo./month1 environment · 3 users · 1 server · monitoring only
- Basic$250/mo./month1 environment · 3 users · starts at 4 servers · hang diagnostics
- Professional$600/mo./month3 environments · 3 users · starts at 4 servers · full diagnostics & performance analysis
- BUSINESS$1200/mo. ANNUAL/yearunlimited environments · unlimited users · starts at 10 servers · on-premise option
LeanSentry vs alternatives
.png?width=64) LeanSentry |  Pulsetic |  groundcover | .jpg?width=64) OpenObserve |  Chaterm | |
|---|---|---|---|---|---|
| Best for | Lightweight, non-intrusive IIS & .NET diagnostics | Website uptime checks | Cloud-wide observability | Large-scale open-source monitoring | Infra automation via chat |
| Pricing | Paid | Free | Free | Subscription | Subscription |
| DevHunt upvotes | 0 | 162 | 39 | 39 | 65 |
| Launched | Jan 2026 | Jan 2024 | Feb 2024 | Apr 2026 | Apr 2026 |
- LeanSentry vs Pulsetic: Focuses on uptime monitoring only, not deep IIS/.NET diagnostics
- LeanSentry vs groundcover: General cloud observability platform, not specialized for IIS/ASP.NET
- LeanSentry vs OpenObserve: Open-source observability for petabyte scale, lacks AI diagnostics for .NET
- LeanSentry vs Chaterm: Chat-based infra automation, not a monitoring/diagnostics tool
LeanSentry FAQ
How is LeanSentry different from traditional APM tools?+
It uses external logs and counters instead of injecting agents, so it has lower overhead and no risk of crashing the app.
Does LeanSentry access my application memory or code?+
No, it only collects non-sensitive data from logs and does not read application memory or source code.
Can I run LeanSentry in a locked-down environment?+
Yes, the OnPremise option lets you host the service entirely within your network with no outbound communication.
What does the free trial include?+
A 7-day trial of the Lite plan with full monitoring; diagnostics are limited until you upgrade.
How are additional servers billed?+
Base rate covers the included servers; extra active servers are charged daily and added to the next month’s bill.
Summarized by DevHunt from leansentry.com · Sep 28, 2026. Details may change; check the official site.
