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    About Us

    We are a Toronto based company that provides consulting services primarily on Microsoft related technologies. Besides, we also run several successful open source projects.


    The team is led by Lex Li, who started his professional career in 2005 and now is an entrepreneur, engineering manager, and open source advocate. He was Microsoft MVP (ASP.NET/IIS) between 2012-2022.


    You can find us on many social platforms.


    Twitter @lextudio

    GitHub @lextudio

    LinkedIn @LeXtudio

  • Technologies

    We have expertise in a variety of technologies.



    We have more than 15 years of experience on Microsoft .NET platform, and can help you out in topics like

    • .NET development (such as WinForms/WPF/WCF/ASP.NET)
    • .NET Core and ASP.NET Core.
    • Migration to .NET Core.
    • Troubleshooting (such as performance and memory issues).



    We have more than 10 years of experience on Microsoft IIS platform, so we are confident to support you on topics like

    • IIS configuration.
    • IIS migration.
    • IIS extension development.
    • Troubleshooting (such as performance and memory issues).



    We have managed the most popular open source .NET library for SNMP protocol since 2008, and gained experience in almost every corner of this stack,

    • Basic SNMP operations.
    • SNMP MIB document authoring.
    • SNMP MIB document parsing.
    • SNMP Agent development.
    • Troubleshooting.

    Visual Studio Code Extension


    We run a successful VSCode extension for reStructuredText, and have 5 years of experience on VSCode extension development and language server protocol,

    • Custom VSCode extension development.
    • Custom language server development.
    • Custom compiler development.
    • Troubleshooting.

    Windows Installer


    We manage a bunch of Windows installers, and have more than 10 years of experience in this area,

    • Custom Inno Setup installer development.
    • Custom WiX installer development.
    • Custom InstallAware installer development.
    • Troubleshooting.
  • Products

    Commercial or open source products backed by LeXtudio.

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    Scarborough for Visual Studio Code

    All-in-one private extension marketplace solution.

    Visual Studio Code is becoming a key asset for many companies, but connecting to Microsoft Marketplace raises concerns around security/operational/usability.


    Scarborough for VSCode offers such companies an easy way to set up private extension marketplaces, and premium services to better manage extension lifecycle and supply chain security internally.


    Learn more

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    reStructuredText for Visual Studio Code

    Code editor extension for better documentation.

    reStructuredText is a great way to author documentation for technology products. It has been widely used by famous projects, such as Python.


    reStructuredText extension for Visual Studio Code enables great documentation authoring experience with syntax highlighting, code snippets, and (most importantly) live preview.


    Learn more

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    #SNMP Pro and Library

    Complete SNMP solution on .NET/Mono/Xamarin.

    #SNMP was started in early 2008, and grows from a small library to a full suite of components for various SNMP areas, including message processing, MIB document compilation, agent framework, manager framework.


    The open source edition has been used in many free and commercial projects and proved to be reliable and easy-to-use.


    Learn more

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    PySNMP, SNMP Library for Python

    The most popular Python SNMP project.

    PySNMP has been a core asset of the Python networking stack for decades. However, its primary author fell ill in 2020 and passed away in 2022. The ecosystem was on the verge of breaking down.


    We decided to revive and bring it forward to the future for all long time users and new joiners.


    You are welcome to join us on the journey and keep the momentum going. All help is appreciated.


    Learn more

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    Simplest and open source obfuscation tool for .NET.

    Obfuscar is a simple obfuscator for .NET assemblies. It uses massive overloading to rename metadata in .NET assemblies (including the names of methods, properties, events, fields, types and namespaces) to a minimal set, distinguishable in most cases only by signature.


    I took over this project in 2013 and has successfully used it in projects such as #SNMP Pro.


    Learn more

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    Jexus Manager

    Unified Management Console for Jexus, IIS, and IIS Express.

    Jexus Manager is an easy-to-use management console designed for Jexus web server initially.


    Soon it gains capabilities to manage IIS Express and IIS. Itself can run on multiple platforms, so that remotely managing your web server is no more a complex task to switch among different tools.


    Learn more

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    PHP Manager 2 for IIS

    Powerful IIS Manager extension for PHP.

    PHP Manager for IIS was invented by Ruslan Yakushev in 2010, and significantly simplifies the steps needed to configure PHP on Windows/IIS platforms.


    Lex took over this project in 2018. Various issues have been fixed and a new 2.0 release was published in August.


    Learn more

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    DockPanel Suite

    Free and powerful docking library for WinForms.

    DockPanel Suite is a Visual Studio inspired docking library for .NET WinForms, which has been popular for many years.


    I took over this project in 2012 along with Ryan Rastedt. Various patches have been applied and Visual Studio 2012.2013/2015 themes have been added to enrich user experience.


    Learn more

  • Contact Us

    Details on support services are documented separately.


    Inquiries on services below are welcome. You can also write directly to [email protected] if you prefer.

  • Books in Simplified Chinese

    Technology history series written by Lex Li on .NET and Borland.

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    .NET Legend

    This book covers the history of .NET ecosystem evolution in the past twenty years. Important product releases, people, and stories behind the scenes walk you through the happy and bitter moments, and in the meantime give you a chance to review the paradigm shift and its impact on the modern platforms such as .NET Core.


    It does not require much technical background to read this book. However, if you happen to use .NET/Mono/Xamarin platforms in your daily life, this book can be a good companion in your adventure.

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    Borland Legend More

    Gordon Li wrote a Chinese book on the history of the Borland Corporation, which was popular in China and Taiwan.


    This book follows a similar story telling style, and focuses on the latest product releases and stories about Borland/CodeGear/Embarcadero.


    You can read it to learn how a famous programming platform like Delphi went down from the pedestal and into the wild, while other technologies became rise of the tide.