Open-Source Software: Pros and Cons
Why Open Source Won
Open source is the substrate of modern software. The benefits are decisive:
- Velocity — start with proven components instead of building from scratch
- Quality — the most-used libraries are battle-tested at scale
- Cost — no licensing fees on the components themselves
- Talent attraction — engineers want to work with familiar, modern tools
- Vendor independence — fewer lock-in dynamics
Where the Risks Are
License Risk
Permissive licences (MIT, Apache 2.0, BSD) are safe for most uses. Copyleft licences (GPL, AGPL) carry obligations that can affect your product. SaaS using AGPL components, in particular, requires careful review. New "source-available" licences (BSL, SSPL) are not OSI-approved open source.
Security and Supply Chain
- Supply-chain attacks (xz-utils, npm typosquats, malicious package takeovers)
- Dependency confusion attacks
- Vulnerabilities in transitive dependencies you didn't even know you used
Sustainability
The xkcd "lone unpaid maintainer" problem is real. Critical infrastructure depends on people doing this in their evenings. Maintainer burnout, abandonments, and rug-pulls happen.
Operational Risk
- Documentation quality varies
- Support is community-based; SLAs are nonexistent
- Project direction changes can break your usage
Practical Mitigations
- Curate your dependencies. A smaller, deliberately chosen set is safer than the kitchen-sink approach.
- SBOMs for every release — know what's in your software.
- Automated scanning for vulnerabilities and outdated packages.
- License compatibility checks in CI.
- Pin and verify — exact versions, integrity hashes.
- Sponsor your critical dependencies. It costs less than rebuilding them when they go unmaintained.
- Mirror or fork anything truly critical — protect against rug-pulls.
When to Build Instead
- Component is core to your competitive advantage
- Compliance demands you control the code path
- The licence doesn't fit your distribution model
- The maintainer situation is genuinely concerning
The Bottom Line
Open source is a gift and a responsibility. Use it wisely, contribute back where you can, and treat your dependency tree as part of your security perimeter.
*We help teams build sustainable open-source strategies — including licence review and supply-chain security. Talk to us →*