For an all-hands, decide whether you need questions, votes, or a knowledge check. Those are different jobs. A platform that handles one well may still require another tool for the rest of your agenda.
Collecting questions
Slido offers audience Q&A and polling. Vevox also offers polls and Q&A. For a sensitive discussion, test how moderation and participant identification work with your actual account before promising anonymity.
Presenting and collecting responses
Poll Everywhere offers response activities alongside presentation workflows. AhaSlides combines polls and quizzes. Trial the exact slide setup you use, including the presenter's view and what an audience member sees on a phone.
Compare the billing unit
Mentimeter's free plan lists a monthly participant allowance, while AhaSlides lists a per-presentation participant limit. Those caps are not interchangeable. Check whether a quoted monthly price is billed annually before comparing totals.
Plan a game break separately
EarthGuessr can supply a shared geography activity. It does not collect anonymous employee feedback or replace a moderated Q&A queue. Use it when the agenda calls for a game, and retain a response tool for questions that need a record.