NextPost is a self-hosted Instagram scheduler. Viari is a full automation suite that includes scheduling plus growth features NextPost doesn't have.
NextPost is sold on CodeCanyon as a PHP-based Instagram scheduler you install on your own server. Viari is a desktop application that combines scheduling with follow/unfollow, DM outreach, engagement automation, and AI features. They're both 'Instagram tools,' but solving different problems: NextPost if you just want a self-hosted post queue, Viari if you want scheduling as part of a larger growth stack.
Viari does everything NextPost does — plus automation features NextPost has never offered. You also skip the VPS setup and maintenance NextPost requires. If scheduling is all you need, NextPost's one-time fee might save money short-term; otherwise Viari wins decisively.
Anyone who wants scheduling as part of a full growth automation suite. Agencies, affiliates, influencers, e-commerce operators.
Technical users who specifically want a self-hosted solution they control completely at the server level, and only need scheduling (not growth automation).