Choose what you need

Get MP-Opt.

Most organisers begin with Desktop. Add the Server when people need a shared schedule, and use Evidence-Public when a record or public key needs independent verification.

Desktop application

Version 3.9.0

Released 10 August 2026. The optimiser and local backend are included.

Release notes

Windows

Windows 10 or later, 64-bit

Masterplan-Optimiser-3.9.0.exe Download

macOS

macOS 12 or later, Apple Silicon

Masterplan-Optimiser-3.9.0-arm64.dmg Download

Linux

Ubuntu 22.04, Fedora 38 or equivalent

Masterplan-Optimiser-3.9.0.AppImage Download

Compare the download with checksums.txt before installation. A signed release turns trust into something you can check.

Installation help

Self-hosted server

Version 3.9.18

Run the web calendar with Docker Compose, Caddy, FastAPI and Next.js. Start with one recoverable server, then add a second VPS only if the event requires redundancy.

Release: v3.9.18, 19 August 2026
Deployment: Docker Compose behind Caddy
Recovery: Encrypted external snapshots

Repository Run the service guide

Evidence-Public

Version 3.9.0

Use browser-local tools to verify a complete exported evidence chain or prepare controller and event-processor key packages. Private key material stays in the browser and is never uploaded by these static pages.

Release: v3.9.0, 10 August 2026
Delivery: Static, client-side GitHub Pages
Scope: Verification and public key custody tools

Open tools Repository

Older builds and complete release histories remain available in the Desktop, Server and Evidence-Public repositories.

Browse the changelog