# PerformanceMonitor > Free, open-source SQL Server performance monitoring — 32 collectors, real-time alerts, graphical plan viewer, MCP server for AI analysis. Supports SQL 2016-2025, Azure SQL, AWS RDS. - **URL**: https://www.freshcrate.ai/projects/PerformanceMonitor - **Author**: erikdarlingdata - **Category**: MCP Servers - **Latest version**: `v2.11.0` (2026-05-20) - **License**: MIT - **Source**: https://github.com/erikdarlingdata/PerformanceMonitor - **Homepage**: https://erikdarling.com/free-sql-server-performance-monitoring/ - **Language**: C# - **GitHub**: 322 stars, 42 forks - **Registry**: github - **Tags**: `aws-rds`, `azure-sql`, `blocking`, `c#`, `database-monitoring`, `dba-tools`, `deadlock`, `deadlocks`, `dotnet`, `mcp-server` ## Description Free, open-source SQL Server performance monitoring — 32 collectors, real-time alerts, graphical plan viewer, MCP server for AI analysis. Supports SQL 2016-2025, Azure SQL, AWS RDS. ## Recent releases | Version | Date | Urgency | Changes | | --- | --- | --- | --- | | `v2.11.0` | 2026-05-20 | High | See [CHANGELOG.md](https://github.com/erikdarlingdata/PerformanceMonitor/blob/main/CHANGELOG.md#2110---2026-05-19) for details. ## Highlights **Important** - .NET 10 upgrade (#958) — release binaries bundle the runtime - `Setup.exe` is now the recommended install path for Dashboard and Lite — registers under Apps & Features, creates shortcuts, wires up auto-update. Portable ZIPs are still produced as a fallback for advanced/air-gapped users - `servers.json` moved to `%ProgramData%\PerformanceM | | `v2.10.0` | 2026-05-04 | High | ### Planes and Plans This week I'm off to [Pass Summit East in Chicago](https://passdatacommunitysummit.com/east/), and [SQLDay in Wroclaw, Poland](https://sqlday.pl/en/). One after the other. Last week I was in [Florida for Data Saturday Jacksonville](https://dayofdata.org/2026-05-02-dayofdata1128/). Hopefully that explains why this week's release is a) early and b) pretty light on changes. It will also hopefully explain why there won't be a release next week. I can see, hear, smell, and fee | | `v2.9.0` | 2026-04-29 | High | ## Very Nearly Three I seem to recall there being some super-shifting feature getting added for 2.0 and 2.5 versions. As we approach 3.0, I don't quite have one of those ready. I'm also starting to wonder if the weekly releases are still necessary. That's a bit of a relief, to be honest. For a bit it felt like I was shipping big fixes and changes at a frantic pace. Now I'm half-tempted to start labeling things "stable" or "LTS" or "dude-trust-me". Anyway, changelog and all that is belo | | `v2.8.0` | 2026-04-22 | High | ## Welcome friends to another release! I do hope you're enjoying these as much as I am. Providing the SQL Server community with a high quality, free, and easy to use monitoring tool has not made me rich beyond my mildest dreams, but it has been fun. The last week gave me an opportunity to add some new stuff, and scrutinize the code a little bit more closely for weird issues that I would occasionally notice. Hopefully never to be noticed again, and all that. As always, if you run into | | `nightly` | 2026-04-21 | High | Automated nightly build from `dev` branch. **Version:** `2.7.0-nightly.20260421` **Commit:** `4cebae2` **Built:** 2026-04-21 06:55 UTC > These builds include the latest changes and may be unstable. > For production use, download the [latest stable release](https://github.com/erikdarlingdata/PerformanceMonitor/releases/latest). | | `v2.7.0` | 2026-04-15 | High | ## Notable New Features: - Host OS column in Server Inventory - Offline community script support for air-gapped installs - MultiSubnetFailover for Always On AG listeners ## Notable Fixes - Dashboard UI hangs on auto-refresh - Deadlock count resets - Lite auto-refresh skipping - upgrade filter patch version handling - memory leaks on tab close - MCP query optimization for large databases - PlanAnalyzer sync from PerformanceStudio ## What's Changed * Fix duplic | | `v2.7.0` | 2026-04-15 | High | ## Notable New Features: - Host OS column in Server Inventory - Offline community script support for air-gapped installs - MultiSubnetFailover for Always On AG listeners ## Notable Fixes - Dashboard UI hangs on auto-refresh - Deadlock count resets - Lite auto-refresh skipping - upgrade filter patch version handling - memory leaks on tab close - MCP query optimization for large databases - PlanAnalyzer sync from PerformanceStudio ## What's Changed * Fix duplic | | `v2.6.0` | 2026-04-08 | High | ## You Can't Beat Someone Who's Having Fun The main goal of this release was to improve data presentation. Obviously some other stuff came up along the way, and thanks to everyone who submitted issues and ideas over the last week. I'm thrilled by the community response and feedback here. Anyway, one of the big changes was to re-do some of the overview information in the dashboards so you can see all of what's going on across a variety of resources at once.