Not every tool needs to be a platform. Some solve one specific, recurring annoyance well. Two that do exactly that:
Setmore gives you a bookable page, two-way calendar sync, and automated reminders — and the free plan is actually usable, not a crippled trial. For a solo consultant, coach, or small service business, that's often all that's needed. See how it stacks up in the full scheduling & appointment tools listing.
Every business eventually hits the moment where a client, contractor, or vendor needs a file that's too large to email. Filemail solves it plainly: no size cap, and the person receiving the file doesn't need to create an account to download it — which matters more than it sounds, since forcing a signup is exactly where these tools lose non-technical recipients. Browse alternatives in file transfer & sharing.
Neither tool is trying to be a platform. That's the point — sometimes the right tool is the narrow one that does its single job without asking you to change how the rest of your business runs.