v5.5.15

Changes since v5.5.14

• Fix #15 by implementing localization
• Implement WinUI Hot Reload support
• Improve first file open performance
• Fix designer Toolbox pad item icons

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.14...v5.5.15

v5.5.14

Changes since v5.5.13

• Fix #15 by implementing localization
• Add traditional Chinese support
• Improve side-by-side designer experience
• Improve Toolbox and Outline pads

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.13...v5.5.14

v5.5.13

Changes since v5.5.12

• Fix #14 by launching the right native start program
• Improve GTK 4 and MewUI designers and
• Improve side-by-side designer experience
• Improve Toolbox and Outline pads

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.12...v5.5.13

v5.5.12

Changes since v5.5.11

• Fix #14 by launching the right native start program
• Improve all designers and enforce common canvas
• Improve XAML language servers

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.11...v5.5.12

v5.5.11

Changes since v5.5.10

• Fix #13 by forcing dependency to load
• Improve Projects pad sticky header
• Fix a few dark theme issues
• Upgrade to the latest SharpDbg

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.10...v5.5.11

v5.5.10

Changes since v5.5.9

• Enable T4 mixed language highlighting
• Fix #11 by implementing project options
• Fix #12 by integrating project/file templates

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.9...v5.5.10

v5.5.9

Changes since v5.5.8

• Add WPF Hot Reload support.
• Improve WinForms / WPF / WinUI editing experience.
• Fix #9 by switching to side-by-side designer experience.
• Fix #10 by fixing Projects pad context menu items.

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.8...v5.5.9

v5.5.8

Changes since v5.5.7

• Add WPF Hot Reload support.
• Improve the WPF / WinUI editing experience.
• Add visual state support in designers.
• Switch to VS 2026 icons.

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.7...v5.5.8

v5.5.7

Changes since v5.5.6

• Improve the WPF / WinUI editing experience.
• Improve Windows packaging.

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On Windows, use OpenDevelop.exe to launch the x64 build, and OpenDevelopARM64.exe to launch the ARM64 build.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.6...v5.5.7

v5.5.6

Changes since v5.5.5

• Improve the WPF / WinUI editing experience.
• Use new logo.

Highlight

This project relies on many important open-source projects

• LibreWPF and LibreWinForms to run on macOS and Linux
• DevFlow for WinForms, WPF, WinUI, and Uno Platform, command line tools to enable AI workflows for UI development and diagnostics

Check them out if you are migrating your own WPF/WinForms apps to such new platforms.

Known issues

• On all supported OS, .NET 10 runtime is needed for the executable to run.
• On macOS, after copying the app to the Applications folder, please use xattr -d com.apple.quarantine /Applications/OpenDevelop.app to unblock the binaries.
• On Linux there can be many issues. Please read the troubleshooting guide for more details.

Full Changelog: v5.5.5...v5.5.6