I have a free extension I love — should I keep it or migrate?

Keep it if all four of these are true:

1. It’s actively maintained. Look at the GitHub / Bitbucket repo — commits in the past 12 months. If the last commit was 18 months ago, the writing’s on the wall.
2. It supports the latest Magento minor (or the maintainer has explicitly committed to supporting it). If you’re upgrading to 2.4.9 and the module’s composer.json caps at 2.4.6, you’ll need to fork it.
3. It hasn’t been abandoned by its original author. Many free modules drift to a maintainer-of-record who isn’t the original author. Quality typically degrades after 1-2 hand-offs.
4. The feature it provides is stable, not evolving. Free extensions are great for stable problems (URL rewrites, basic image lazy-load, cookie banner). They struggle with evolving problems (SEO ranking signals, GDPR regulation drift, payment-method standards).

Migrate when:

• The module hasn’t shipped a release in 18+ months. Don’t wait for it to break in production — pre-empt.
• You’ve had to fork it twice for compat fixes. Forking is fine once; twice means you’re effectively the maintainer.
• It has known security disclosures with no patch. Non-negotiable — replace immediately.
• A paid alternative does substantially more and the time you’ve already invested in the free one is sunk cost.

The recommender will surface paid alternatives when you run a category, but it won’t pressure you to migrate — if the free option works and is maintained, that’s usually the right answer.