For open source maintainers, the best free source code hosting platforms usually come down to a mix of visibility, collaboration features, CI/CD, issue tracking, and long-term project health. Here are the strongest options:

1. GitHub

Best overall for most open source projects

Pros:

• Largest open source community
• Excellent issue tracking, pull requests, reviews, and project boards
• Strong ecosystem of integrations and GitHub Actions CI/CD
• Easy discoverability and contributor familiarity
• Good support for documentation and releases

Cons:

• Owned by Microsoft
• Some advanced features are tied to paid plans, though public repos are very well supported

Ideal for: Most maintainers who want maximum contributor reach and a polished workflow.

---

2. GitLab.com

Best for built-in DevOps and all-in-one workflows

Pros:

• Strong built-in CI/CD
• Good repository management, merge requests, and issue tracking
• Many features available in the free tier for public projects
• More “all-in-one” than GitHub in some workflows

Cons:

• Smaller open source contributor pool than GitHub
• UI and workflows can feel heavier to some users

Ideal for: Projects that want integrated CI/CD and a more self-contained platform.

---

3. Codeberg

Best privacy-friendly, community-driven alternative

Pros:

• Nonprofit, community-oriented
• Based on Forgejo, a fork of Gitea
• Good for maintainers who prefer independent infrastructure
• Supports public repos well and is popular among FOSS advocates

Cons:

• Much smaller user base
• Fewer third-party integrations than GitHub/GitLab

Ideal for: Maintainers who want a strong ethical/community-focused alternative.

---

4. SourceHut

Best for minimalist, power-user-friendly workflows

Pros:

• Lightweight, fast, and very open-source friendly
• Strong email-based workflow support
• Great for users who prefer simplicity and standards
• Public projects work well

Cons:

• Less mainstream
• Steeper learning curve for some users
• Smaller community and ecosystem

Ideal for: Maintainers who like Unix-like, text-oriented, low-friction tooling.

---

5. GitBucket / Gitea / Forgejo self-hosted options

Best if you want free hosting with full control

These are not hosted platforms in the same sense, but they’re important alternatives if you can host your own infrastructure or use a community instance.

Pros:

• Full control over data and policies
• Can be very lightweight
• Great for organizations with their own servers

Cons:

• You manage updates, backups, security, and uptime
• Discoverability is much lower than GitHub

Ideal for: Teams with infrastructure support or maintainers who value control over convenience.

---

Quick recommendation

If you want the best free platform for public open source repos, the usual ranking is:

1. GitHub — best reach and contributor experience
2. GitLab — best built-in tooling
3. Codeberg — best community-driven alternative
4. SourceHut — best minimalist option

What to choose based on your goals

• Max contributors and visibility: GitHub
• Integrated CI/CD and issue management: GitLab
• Open-source values and independence: Codeberg
• Simple, technical, text-first workflow: SourceHut
• Full control: self-hosted Gitea/Forgejo

If you want, I can also give you a feature-by-feature comparison table or suggest the best platform based on your project size and stack.