A visual node-graph editor for building PowerShell scripts. Drag, connect, run.

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What is PoSHBlox?

PoSHBlox lets you visually compose PowerShell scripts by wiring together nodes on a canvas. Each node is a cmdlet, control-flow block, or custom script fragment; connections define the pipeline. Preview the generated script, run it, or export a clean .ps1.

Features

• 85+ built-in cmdlet templates across 12 categories
• Control-flow containers: If/Else, ForEach, Try/Catch, While, Functions, Labels (nestable)
• Live script preview and one-click Run (prefers pwsh 7+, falls back to Windows PowerShell 5.1)
• Pipeline-aware codegen: chains pipes, assigns variables at branch points, detects cycles
• Import cmdlets from installed modules to extend the palette
• Keyboard shortcuts, dark theme, pan/zoom canvas with Bezier wires

Get it

Download a prebuilt release (recommended)

Grab the latest .zip from Releases. No .NET install required — the .exe is self-contained. Extract, run PoSHBlox.exe.

Every push to every branch also publishes a rolling pre-release (Branch build: <branch-name>) and a 30-day artifact on the Actions run page.

Build from source

Requires the .NET 10 SDK.

git clone https://github.com/obselate/PoSHBlox.git
cd PoSHBlox
dotnet run

How it works

1. Add nodes from the palette (press P)
2. Connect output ports to input ports by dragging wires
3. Configure parameters in the right-side properties panel
4. Preview (Alt+S), Run (F5), or Export (Ctrl+E) as .ps1

Press ? any time for the full keyboard cheatsheet.

Regenerating the built-in catalogs

The fastest way to add cmdlets is + Import in the palette — pick an installed module and PoSHBlox introspects it into a Custom template set.

The shipped Templates/Builtin/*.json can be rebuilt from scripts/builtin-catalog.json (the reference manifest of modules and cmdlets per category). Curated per-parameter defaults are preserved across runs.

# Pipe to Out-Host so the WinExe flushes output to the shell.
.\bin\Debug\net10.0\PoSHBlox.exe --regen-manifest scripts\builtin-catalog.json 2>&1 | Out-Host

# Dry-run to preview:
.\bin\Debug\net10.0\PoSHBlox.exe --regen-manifest scripts\builtin-catalog.json --dry-run 2>&1 | Out-Host

License

GNU AGPL v3 — see LICENSE