The sergeant muttered that only a pecker checker would know how to treat that, so he sent the private to the base hospital.

Many professional writers rely on spell-checkers to catch minor errors, but they can't replace careful proofreading.

The spell-checker on my laptop caught a typo I had missed.

Many developers rely on type checkers to catch subtle bugs before runtime.

Because the legacy library lacked documentation, our type checker flagged several ambiguous type annotations.

Many writers rely on grammar checkers to catch subtle errors before submitting their work.

The fact checker spent hours verifying the source of the viral claim.

I rely on the spelling checker in my word processor to catch typos before I send emails.

The research compared several popular spelling checkers to determine which caught the most errors.

Fact checkers found several inaccuracies in the politician's speech.