# PerformanceStudio

> Free, open-source SQL Server execution plan analyzer — cross-platform GUI + CLI with 30 analysis rules, missing index detection, SSMS extension. Built-in MCP server for AI-assisted plan review.

- **URL**: https://www.freshcrate.ai/projects/PerformanceStudio
- **Author**: erikdarlingdata
- **Category**: MCP Servers
- **Latest version**: `v1.12.0` (2026-06-02)
- **License**: MIT
- **Source**: https://github.com/erikdarlingdata/PerformanceStudio
- **Homepage**: https://erikdarling.com
- **Language**: C#
- **GitHub**: 171 stars, 28 forks
- **Registry**: github
- **Tags**: `avalonia`, `c#`, `cli`, `cross-platform`, `database-performance`, `dba-tools`, `dotnet`, `execution-plan`, `mcp-server`

## Description

Free, open-source SQL Server execution plan analyzer — cross-platform GUI + CLI with 30 analysis rules, missing index detection, SSMS extension. Built-in MCP server for AI-assisted plan review.

## Recent releases

| Version | Date | Urgency | Changes |
| --- | --- | --- | --- |
| `v1.12.0` | 2026-06-02 | High | ## What's Changed * Publish SSMS extension to the SSMS Gallery on release (#343) by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/348 * Feature/settings by @rferraton in https://github.com/erikdarlingdata/PerformanceStudio/pull/351 * Restore dropped XML docs in AppSettingsService by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/352 * Bump version to 1.12.0 for release by @erikdarlingdata in https://github.com/erikdarlingdata/Perform |
| `v1.11.2` | 2026-05-22 | High | ## What's Changed * Build SSMS extension VSIX in release workflow + bump to 1.11.1 (#343) by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/344 * Release v1.11.1 by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/345 * Fix SSMS VSIX release step + bump to 1.11.2 (#343) by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/346 * Release v1.11.2 by @erikdarlingdata in https://github.com/erikdarlingdata/Performa |
| `v1.11.0` | 2026-05-19 | High | ## As Always A very special thank you to everyone who submits issues and contributes code. In this release, @rferraton and @ClaudioESSilva got some pretty cool new stuff in. The full change log is below, but the Query Store integration is quickly becoming the star of the show in a lot of ways. It's almost like a self-contained monitoring tool at this point.   There's a [web version](https://plans.erikdarling.com/) of the plan analysis portion of the app too. This is useful for people who want |
| `v1.10.0` | 2026-05-04 | High | # v1.10.0 The ongoing work to make this simpler to add rules/information about things in plans will eventually allow users to extend things to deal gracefully with local issues. Right now I'm not sure how it will go. For informational bits like wait stats, it's very easy. For arbitrarily complex rules, it's a bit harder to jam those into a json config file that can be interpreted correctly and consistently.   Anyway, as always, thank you to my valuable contributors of code, and Joe Obbish for |
| `v1.9.0` | 2026-04-27 | High | ## What's Changed * Bump dependencies and clean up source warnings by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/277 * Migrate xunit to v3 by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/278 * Bump SqlClient 6 -> 7 and ScriptDom 170 -> 180 by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/279 * Migrate System.CommandLine beta4 -> 2.0.7 GA by @erikdarlingdata in https://github.com/erikdarlingdata/Pe |
| `v1.7.6` | 2026-04-22 | High | ## What's Changed * Loosen memory grant colors + compile time as plan-level property (#215 C1, C4) by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/261 * C8 expensive-operator rule + C9 columnstore on wide bare scans (#215) by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/263 * Release v1.7.6 — C1 memory color + C4 compile time + C8 expensive-op + C9 columnstore by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceSt |
| `v1.7.1` | 2026-04-21 | High | ## What's Changed * Make release workflow reruns idempotent when release already exists by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/246 * Render benefit % and actionable fix in all warning surfaces (v1.7.1) by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/247 * Release v1.7.1 — render benefit % and actionable fix by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/248   **Full Changelog**: https://g |
| `nightly` | 2026-04-21 | High | Automated nightly build from `dev` branch.  **Version:** `1.7.0-nightly.20260421` **Commit:** `d37ecac` **Built:** 2026-04-21 06:48 UTC  > These builds include the latest changes and may be unstable. > For production use, download the [latest stable release](https://github.com/erikdarlingdata/PerformanceStudio/releases/latest). |
| `v1.7.0` | 2026-04-21 | High | ## What's Changed * Wait stats as warnings (#215, Joe feedback a1/b4/b5) by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/244 * Release v1.7.0 — wait stats as warnings by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/245   **Full Changelog**: https://github.com/erikdarlingdata/PerformanceStudio/compare/v1.6.0...v1.7.0 |
| `v1.6.0` | 2026-04-20 | High | ## What's Changed * Feature/query store group by changer by @rferraton in https://github.com/erikdarlingdata/PerformanceStudio/pull/218 * Remove unnecessary query_store_query_text joins in grouped fetches by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/221 * Add built-in analytics to PlanShare and stats dashboard by @erikdarlingdata in https://github.com/erikdarlingdata/PerformanceStudio/pull/222 * Release: analytics for Plan Analyzer web app by @erikdarlingd |

## Dependency audit

- **Score**: 100/100
- **Total deps**: 0
- **Resolved**: 0
- **Unresolved**: 0
- **License conflicts**: 0
- **Warnings**: 0
- **Scanned**: 2026-05-04

## Citation

- HTML: https://www.freshcrate.ai/projects/PerformanceStudio
- Markdown: https://www.freshcrate.ai/projects/PerformanceStudio.md
- Dependencies JSON: https://www.freshcrate.ai/api/projects/PerformanceStudio/deps

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