03. Planning & Scoping

How to Define a Realistic MVP for Your Open Source Project

Table of Contents
In: 03. Planning & Scoping

Why This Stage Matters

You can’t build everything at once, and you shouldn’t try. The most effective Open Source projects don’t launch fully formed. They start with a Minimum Viable Product (MVP): the simplest version of the idea that still delivers value.

Planning your MVP helps you:

  • Stay focused
  • Launch faster
  • Avoid burnout
  • Make it easier for others to contribute

This is where good ideas become buildable.


Step 1: Go Back to the Core Problem

Start with the real-world need you’re solving. Then ask yourself:

  • What’s the smallest thing I could build that would still help someone?
  • What’s the core value I’m offering?

Examples:

Idea: A tool for blind students to access textbook content
MVP: Upload a PDF → get a plain-text version with alt-text and semantic structure
Idea: A secure messaging app for activists
MVP: End-to-end encrypted chat between two people using local keys

If your MVP solves one problem for one type of user, that’s a win.


Step 2: Cut Features Ruthlessly (for Now)

Write down every feature you imagine. Then cross out everything that isn’t essential.

Ask yourself:

  • Would the core problem still be solved without this?
  • Can this be added later without breaking the design?
  • Is this feature making it harder to launch?

You’re not saying no forever, you’re saying not yet.


Step 3: Scope for What You Can Actually Build

It’s tempting to plan for what would be ideal. But your MVP should match your time, skills, and resources.

Consider:

  • Are you working solo or with a team?
  • How much time can you realistically commit?
  • Are there tools or libraries that reduce the work?

For example, if you’re not a frontend developer, maybe your MVP is a CLI tool, with a UI planned for later.


Step 4: Write It Down

Create a short planning doc with:

  • Your MVP goal in one sentence
  • The 2 - 3 features it must include
  • The features you’ll save for later
  • Who it helps and how

This document will guide your initial development and make it easier to get feedback early.


Tips for Planning a Solid MVP

  • Focus on usefulness, not completeness
  • Launch something boring and helpful before something flashy
  • You can’t fix scope creep if you don’t define scope
  • Every extra feature is another reason not to launch

TL;DR

  • Your MVP should solve one problem for one group of people
  • Strip away everything that’s not essential, for now
  • Write down your MVP scope so you don’t get lost later
  • Build something small that works, and grow from there
Written by
Cory Chris
Cory Chris leads the Software for Progress Foundation, helping developers build Open Source tools for education, accessibility, and social good through mentorship and community support.
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