Performance Monitor includes integrations with the following third-party open-source software components. Each component is subject to the license terms specified below.
Author: Adam Machanic Repository: https://github.com/amachanic/sp_whoisactive License: GNU General Public License v3.0 (GPLv3)
sp_WhoIsActive is used for real-time query activity monitoring and capturing query snapshots.
Copyright (C) Adam Machanic
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.
Full license: https://github.com/amachanic/sp_whoisactive/blob/master/LICENSE
Author: Erik Darling (Darling Data, LLC) Repository: https://github.com/erikdarlingdata/DarlingData License: MIT License
DarlingData provides sp_HealthParser for system health analysis and sp_HumanEventsBlockViewer for blocking event analysis.
MIT License
Copyright (c) 2025 Erik Darling
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Full license: https://github.com/erikdarlingdata/DarlingData/blob/main/LICENSE.md
Author: Brent Ozar Unlimited Repository: https://github.com/BrentOzarULTD/SQL-Server-First-Responder-Kit License: MIT License
The First Responder Kit provides sp_BlitzLock for deadlock analysis and other SQL Server diagnostic tools.
MIT License
Copyright (c) 2025 Brent Ozar Unlimited
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Full license: https://github.com/BrentOzarULTD/SQL-Server-First-Responder-Kit/blob/main/LICENSE.md
Performance Monitor includes an optional integration with sp_WhoIsActive, which is licensed under GPLv3. This integration:
- Is optional: Performance Monitor functions without sp_WhoIsActive installed
- Does not modify sp_WhoIsActive source code
- Calls sp_WhoIsActive as an external tool when available
- Does not create a derivative work of sp_WhoIsActive
Users who choose to install sp_WhoIsActive must comply with the GPLv3 license terms for that component. Performance Monitor itself remains under its separate license.
If you have concerns about GPLv3 compatibility in your environment, you can:
- Skip sp_WhoIsActive installation during setup
- Use alternative query monitoring approaches
- Contact Darling Data, LLC for guidance
Author: Microsoft Corporation Repository: https://github.com/microsoft/vscode-mssql License: MIT License
Execution plan operator icons (PNG) from the vscode-mssql extension are used in the Plan Viewer feature.
MIT License
Copyright (c) Microsoft Corporation
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Full license: https://github.com/microsoft/vscode-mssql/blob/main/LICENSE
Performance Monitor would not be possible without the excellent work of:
-
Adam Machanic for sp_WhoIsActive, the gold standard in SQL Server activity monitoring
-
Erik Darling for DarlingData tools that provide deep system health and blocking analysis
-
Brent Ozar Unlimited for the First Responder Kit and comprehensive SQL Server diagnostics
-
Microsoft for vscode-mssql execution plan operator icons used in the Plan Viewer
We are grateful for their contributions to the SQL Server community and their commitment to open-source software.
The following NuGet packages are used as runtime dependencies. Test-only packages (xUnit, Microsoft.NET.Test.Sdk) are excluded as they are not distributed with the application.
Version: 6.1.4 Author: Microsoft License: MIT Project URL: https://aka.ms/sqlclientproject Repository: https://github.com/dotnet/sqlclient
© Microsoft Corporation. All rights reserved.
Versions: 10.0.3 Author: Microsoft License: MIT Repository: https://github.com/dotnet/runtime
© Microsoft Corporation. All rights reserved.
Version: 10.0.3 Author: Microsoft License: MIT Repository: https://github.com/dotnet/runtime
© Microsoft Corporation. All rights reserved.
The above Microsoft packages are all licensed under the MIT License:
MIT License
Copyright (c) .NET Foundation and Contributors
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Version: 5.1.57 Author: Scott Harden License: MIT Project URL: https://scottplot.net/ Repository: https://github.com/ScottPlot/ScottPlot
MIT License
Copyright (c) Scott Harden / Harden Technologies, LLC
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Version: 1.5.0 Author: Giorgi Dalakishvili License: MIT Repository: https://github.com/Giorgi/DuckDB.NET
MIT License
Copyright © 2020 - 2026 Giorgi Dalakishvili
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Version: 2.0.1 Authors: Philipp Sumi, Robin Krom, Jan Karger License: MIT Repository: https://github.com/hardcodet/wpf-notifyicon
MIT License
Copyright (c) 2009 - 2019 Philipp Sumi, 2019 - 2024 Philipp Sumi, Robin Krom, Jan Karger
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Version: 1.0.2 Author: iLya Lozovyy License: Apache License 2.0 Original Project: http://credentialmanagement.codeplex.com/ (archived)
Apache License Version 2.0, January 2004 http://www.apache.org/licenses/
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
Version: 0.7.0-preview.1 Authors: Anthropic and Contributors License: Apache License 2.0 Project URL: https://modelcontextprotocol.github.io/csharp-sdk Repository: https://github.com/modelcontextprotocol/csharp-sdk
© Anthropic and Contributors.
Apache License Version 2.0, January 2004 http://www.apache.org/licenses/
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
Full license: https://github.com/modelcontextprotocol/csharp-sdk/blob/main/LICENSE
Last Updated: March 16, 2026