The best rabbit OS3 alternatives

Better than rabbit OS3 if you want the most capable free personal agent and you're comfortable giving Meta access to your accounts.

Muse is the most complete personal agent you can get today: it books, buys, handles email and forms, and it's free to start. It also has the strongest published safeguards here: approvals before sending or buying, a full audit trail, and a separate agent that checks anything it sends out. The catch is trust: it wants deep access to your email, calendar and payments, it's run by Meta, and reporting found that some of its beta phone calls were completed by human workers.

Better than rabbit OS3 if you can get an invite and want an agent you text that books, buys and calls businesses for you.

Instinct is the most capable errand-runner you can text, and it really does pay and book for you, using virtual cards you approve. You need an invite to get in, prices haven't been published, and reviewers have raised privacy and liability questions, so check what you're agreeing to.

Better than rabbit OS3 if you want a free, proactive agent that can actually order, pay and book on websites for you.

Hark Pro is one of the strongest new agents: Handoff works through real websites, every feature is in every plan, and the free tier is generous. It's brand new, it asks for email, calendar and card access to work well, and it can't make phone calls yet.

Better than rabbit OS3 if you want a free agent in your texts that books, calls businesses and chases refunds.

Pally is the best free agent you can text: it books, calls and chases refunds, and it asks before anything consequential. It plans to earn fees from merchants when you buy through it, though it says merchants can't pay to change its picks, and working through websites needs the $95-a-month Cloud Mac add-on.

Better than rabbit OS3 if you already pay for X Premium or SuperGrok and want bots that run recurring jobs you can teach them.

Grok Bot is a powerful, flexible agent, especially for recurring jobs you can teach it once. It's not cheap ($30 a month and up), its usage pool is shared with Grok and Cursor, all your Bots share the same logins, and xAI's own pages couldn't be checked, so plan details come from third-party reports.

Better than rabbit OS3 if you're comfortable in a terminal and want a free agent you control, running on your own machine.

OpenClaw is the most powerful agent here for people willing to set it up: it lives in your chat apps, remembers everything locally, and acts on its own schedule. It's free, but you pay your AI provider. And you're giving an AI real access to your computer and accounts, so it needs care and some technical comfort.

Better than rabbit OS3 if you want an open-source agent with ready-made apps that you can self-host later.

Comma is the easiest open-source agent to try: there's a hosted free tier and apps, not just a terminal, and you can self-host when you want full control. It leans toward work tasks, and heavier use on its Pro plan costs $80 a month.

Better than rabbit OS3 if your errands are repetitive tasks on your computer that you'd like an agent to do.

Sai is one of the more capable computer-use agents for repetitive screen work. Simular doesn't publish consumer pricing or detail which platforms Sai supports, so it's hard to judge on value yet.