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

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.

• 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

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.

Requires the .NET 10 SDK.

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

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.

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

GNU AGPL v3 — see LICENSE