Before You Start
What Open Source Is

What Open Source Really Is (and Is Not)

ℹ️

The Definition Most Get Wrong

Open source isn't just "code you can see." It's a philosophy, a legal framework, and a culture ,all in one.

The Three Pillars of Open Source

┌─────────────────────────────────────────────────────────────────────────────┐
│                     THE THREE PILLARS OF OPEN SOURCE                        │
├─────────────────────────────────────────────────────────────────────────────┤
│                                                                             │
│         ┌─────────────┐   ┌─────────────┐   ┌─────────────┐                │
│         │             │   │             │   │             │                │
│         │   LICENSE   │   │  COMMUNITY  │   │   CULTURE   │                │
│         │             │   │             │   │             │                │
│         │  Legal      │   │  People who │   │  Shared     │                │
│         │  permissions│   │  build &    │   │  values &   │                │
│         │  granted    │   │  use the    │   │  practices  │                │
│         │             │   │  software   │   │             │                │
│         └─────────────┘   └─────────────┘   └─────────────┘                │
│               │                 │                 │                        │
│               └─────────────────┼─────────────────┘                        │
│                                 │                                          │
│                                 ▼                                          │
│                    ┌─────────────────────────┐                             │
│                    │     OPEN SOURCE         │                             │
│                    │     SOFTWARE            │                             │
│                    └─────────────────────────┘                             │
│                                                                             │
└─────────────────────────────────────────────────────────────────────────────┘

What Open Source IS

Transparent Development

┌─────────────────────────────────────────────────────────────────┐
│        TRADITIONAL SOFTWARE       │       OPEN SOURCE           │
├───────────────────────────────────┼─────────────────────────────┤
│                                   │                             │
│  Decisions behind closed doors    │  Discussions in public      │
│                                   │  issues & PRs               │
│                                   │                             │
│  Roadmap hidden                   │  Roadmap in public docs     │
│                                   │                             │
│  Bug reports internal             │  Bug reports public         │
│                                   │                             │
│  Code review private              │  PRs visible to all         │
│                                   │                             │
│  "Trust us, it works"             │  "Here's the code, verify"  │
│                                   │                             │
└───────────────────────────────────┴─────────────────────────────┘

Collaborative by Default

Open source projects invite participation:

  • Anyone can contribute , If you follow the process
  • Anyone can review , Code reviews are public
  • Anyone can fork , Create your own version legally
  • Anyone can learn , The codebase is your classroom

The Ecosystem

                         ┌──────────────────┐
                         │   End Users      │
                         │   (Millions)     │
                         └────────┬─────────┘
                                  │ use

                         ┌──────────────────┐
                         │   The Software   │
                         └────────┬─────────┘
                                  │ built by

          ┌───────────────────────┼───────────────────────┐
          │                       │                       │
          ▼                       ▼                       ▼
┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   Maintainers   │    │  Contributors   │    │   Companies     │
│   (2-10)        │    │  (Hundreds)     │    │   (Sponsors)    │
└────────┬────────┘    └────────┬────────┘    └────────┬────────┘
         │                      │                      │
         └──────────────────────┴──────────────────────┘

                       ┌────────▼─────────┐
                       │   The Community  │
                       └──────────────────┘

What Open Source Is NOT

❌ It's Not Free Labor for Companies

⚠️

Know Your Worth

Many companies benefit from open source. That doesn't mean you should work for free on their products. Be aware of the dynamic when contributing to corporate-backed projects.

❌ It's Not a Shortcut

ExpectationReality
"I'll contribute for 2-3 months and get hired"Career impact takes 1-2+ years of consistent work
"My first PR will be merged quickly"First PR reviews often take 1-3 weeks
"I'll become a core contributor fast"Core contributor status takes 1-2+ years
"Maintainers will mentor me"Maintainers are busy volunteers

❌ It's Not Always Welcoming

Toxic Communities Exist

Some projects have:

  • Hostile maintainers
  • Cliquish communities
  • No documentation
  • Abandoned codebases

Before investing time:

  • Check the Code of Conduct
  • Read recent issue discussions
  • See how maintainers respond to newcomers
  • Look for "contributor-friendly" labels

The Open Source Development Model

┌─────────────────────────────────────────────────────────────────────────────┐
│                    OPEN SOURCE DEVELOPMENT FLOW                             │
├─────────────────────────────────────────────────────────────────────────────┤
│                                                                             │
│  ┌─────────┐    ┌─────────┐    ┌─────────┐    ┌─────────┐    ┌─────────┐  │
│  │  Issue  │───▶│  Fork   │───▶│ Branch  │───▶│  Code   │───▶│  PR     │  │
│  │ Created │    │  Repo   │    │ Create  │    │ Changes │    │ Submit  │  │
│  └─────────┘    └─────────┘    └─────────┘    └─────────┘    └────┬────┘  │
│                                                                    │       │
│                                                                    ▼       │
│  ┌─────────┐    ┌─────────┐    ┌─────────┐    ┌─────────┐    ┌─────────┐  │
│  │ Released│◀───│ Merged  │◀───│ Approved│◀───│ Review  │◀───│  CI     │  │
│  │         │    │         │    │         │    │ Changes │    │  Runs   │  │
│  └─────────┘    └─────────┘    └─────────┘    └─────────┘    └─────────┘  │
│                                                                             │
│  ◄──────────────── Time: Days to Weeks ────────────────────────────────►   │
│                                                                             │
└─────────────────────────────────────────────────────────────────────────────┘

License Types at a Glance

LicenseCan Use CommerciallyMust Share SourceAttribution Required
MIT✅ Yes❌ No✅ Yes
Apache 2.0✅ Yes❌ No✅ Yes
GPL v3✅ Yes✅ Yes✅ Yes
BSD 3-Clause✅ Yes❌ No✅ Yes
LGPL✅ Yes✅ For modifications✅ Yes
AGPL✅ Yes✅ Even for SaaS✅ Yes
💡

License Matters

Understanding licenses helps you know your rights and obligations. MIT and Apache are permissive; GPL is copyleft.


The Philosophy in Practice

Transparency First

Before asking a question privately, check if it should be asked publicly where others can learn.

Patience Always

Before pinging a maintainer, wait at least a week for a response.

Humility Required

Before arguing about your PR, consider that maintainers know the codebase better than you.

Gratitude Matters

Before complaining, remember maintainers are unpaid volunteers.


Key Takeaways

Open Source is:

  • 📜 A legal framework (licenses)
  • 👥 A community (people)
  • 🤝 A culture (values)
  • 📖 Transparent (public everything)
  • 🔄 Collaborative (anyone can contribute)

Open Source is NOT:

  • 💰 Free labor
  • 🚀 A shortcut to anything
  • 🤗 Always welcoming
  • 📚 Just code