AI Agents

Top 12 alternatives to Sim

Open-source AI workspace to build, deploy, and manage agents. Here are 12 other ai agents tools — ranked by rating, review volume, and how well they overlap with your existing stack.

Compare Sim side by side Visit Sim

The tool you're comparing

New this month

Sim

Open-source AI workspace to build, deploy, and manage agents

4.6(890)

Free / Pro $25/user/mo / Max $100/user/mo

12 alternatives

New this month

OpenClaw

Open-source AI agent for messaging, browser automation, and smart home control

4.8(12,400)

Free / open-source

Google Gemini

Google's flagship AI assistant — across search, workspace, and daily life

4.6(18,500)

Free / Google AI Plus, Pro and Ultra

Claude Code

Agentic coding tool by Anthropic for the terminal

4.8(3,200)

Usage-based / included in Max plan

New this month

Manus AI

Autonomous AI agent that browses, codes, and builds apps in the background

4.5(5,800)

Free (300 credits/day) / from $39/mo

New this month

CrewAI

The leading platform for orchestrating multi-agent AI teams

4.7(3,800)

Free (OSS) / Enterprise custom

New this month

Gumloop

No-code AI automation where a meta-agent builds your workflows for you

4.6(1,450)

Free / from $97/mo Pro

New this month

Lindy AI

Build custom AI employees for email, CRM, sales, and support — no code needed

4.5(4,200)

Free (400 credits/mo) / from $49.99/mo

Genspark

AI Super Agent that handles entire workflows end-to-end

4.5(2,800)

Free / from $25/mo

New this month

Workato ONE

Enterprise iPaaS unifying integration, orchestration, and agentic AI

4.6(2,900)

From $833/mo

Microsoft 365 Copilot

AI assistant embedded across Microsoft 365 apps

4.3(7,800)

$30/user/mo add-on

New this month

Cognigy

Enterprise-grade conversational AI for contact centres — Gartner Magic Quadrant Leader

4.6(2,800)

Enterprise pricing (custom)

New this month

Dify

Open-source platform for building and running production AI agents and LLM workflows

4.5(1,876)

Self-host free; Cloud from $59/mo

How we ranked these

Alternatives are scored on a blend of average rating, review volume, integration overlap with Sim, and editorial verification. We exclude apps from other categories so you only see real like-for-like options. All listings are independent — no tool pays to appear here.