Reggi

A Windows Registry editor for your terminal — browse keys, search, and edit values.

Give it a go

You'll need Windows and the .NET 10 SDK:

dotnet run --project Reggi

Want a standalone exe? Publish the native Windows build:

dotnet publish Reggi -c Release -r win-x64

Find reggi.exe in Reggi/bin/Release/net10.0-windows/win-x64/publish/. It runs without a .NET runtime installed. Native publishing needs the Visual Studio C++ build tools; if the linker or vswhere.exe can't be found, try Developer PowerShell for Visual Studio.

If Command Prompt stays blank when you run the exe, try the alternative console driver:

chcp 65001
reggi.exe --net-driver

For a vPro serial console, use reggi.exe --vpro. It selects that driver, switches to UTF-8 for the session, and translates its F1–F12 key codes. No separate chcp command needed.

To see where startup stops, add --trace-startup to either command. The trace is written to %TEMP%\reggi-startup.log.

Getting around

Use Tab to switch between keys and values. The bar at the bottom shows the main shortcuts, and F1 opens help in the app.

Key	What it does
↑ / ↓	Move through the current pane
Enter	Open a key or edit a value
→ / ←	Expand or collapse a key; move into or out of it
Space	Toggle a key open or closed
Backspace	Go to the parent key
Type a name	Jump to a matching key in the keys pane
Ctrl+F / F3	Find something / find the next match
F2	Rename the selected key or value
F5	Reload the current key
F6 / F7	Add a value / add a key
Del or F8	Delete the selected key or value
Ctrl+Q	Quit

Search can look through key names, value names, and value data, starting at the selected key. F3 picks up where the last search left off.

Good to know

• Editing HKEY_LOCAL_MACHINE and much of HKEY_CLASSES_ROOT usually needs an elevated terminal. You can still browse without one.
• Deleting a key deletes everything under it. Reggi asks before deleting keys or values.
• DWORD and QWORD values can be edited in hex or decimal. For REG_MULTI_SZ, separate entries with semicolons; use \; for a literal semicolon, \\ for a backslash, and \0 for an empty entry.
• F8 is an alternative to Del for terminals that don't pass the Delete key through reliably.

Run the tests with dotnet test Reggi.sln.