#1Top pickFree option
OpenAI's coding agent for the terminal, IDE and cloud, included in every ChatGPT plan
OpenAI Codex is a coding agent from OpenAI that writes features, fixes bugs and proposes pull requests, either locally through its open-source CLI and IDE extension or in cloud sandboxes. It is included in every ChatGPT plan, including Free for quick tasks. Paid plans raise the usage limits.
Why it's here
- +Available on the free ChatGPT plan
- +Runs locally or in cloud sandboxes
- +CLI is open source (Apache-2.0)
Watch out for
- −Free and Go limits are tight for daily work
- −Cloud tasks need a GitHub-connected repo
- −Usage limits differ by plan and can be hard to predict
Free · from $8/moTask agent
#2Free option
AI agents that act across 9,000+ apps using your Zapier connections
Zapier Agents is a product from Zapier for building AI agents that do work across 9,000+ connected apps. You describe an agent with help from Zapier Copilot, give it company knowledge and let it run tasks or answer questions. It has a free plan with 400 activities a month and paid plans with more.
Why it's here
- +Largest app catalog
- +Free plan to start
- +Builds on existing Zapier connections
Watch out for
- −Activity caps per run on lower plans
- −Agent logic is less transparent than a Zap
- −Team allowances not published
Free · from $33.33/moTask agent
#3Free option
Free AI notetaker that records, transcribes and summarizes video calls
Fathom is an AI meeting assistant that records, transcribes and summarizes Zoom, Google Meet and Teams calls and can send notes to your CRM. Its free plan is free forever. Premium costs $20 a month ($16 billed annually), with Team and Business plans for groups.
Why it's here
- +Strong free plan
- +Fast summaries after calls
- +CRM sync on paid plans
Watch out for
- −Recorder joins the call
- −Advanced AI features on paid tiers
- −Fewer analytics than enterprise tools
Free · from $20/moTask agent
#4Free option
Open-source coding agent for VS Code that uses any model you bring
Cline is an open-source coding agent that runs inside VS Code and other editors, planning changes, editing files and running commands with your approval at each step. It is free for individual developers; you pay only for the AI model usage, using your own API keys or a provider of your choice. An Enterprise plan adds team controls.
Why it's here
- +Apache-2.0 open source
- +Works with many model providers, including local models
- +Clear plan-then-act flow with approvals
Watch out for
- −Model costs can add up with no cap
- −More setup than a subscription tool
- −Approving each step slows long tasks
#5Free option
Open-source platform for running autonomous coding agents, formerly OpenDevin
OpenHands (formerly OpenDevin) is an open-source platform for AI coding agents that can write code, run commands and browse the web in a sandbox. You can self-host it for free or use the hosted product. A Teams plan adds a managed setup for up to 10 users.
Why it's here
- +MIT licensed and self-hostable
- +Works with many models
- +Runs agents in isolated sandboxes
Watch out for
- −Self-hosting takes DevOps work
- −Hosted Teams plan is expensive for small teams
- −Less polished than commercial IDE agents
#6Free option
Perplexity's AI browser with an assistant that can act on web pages
Comet is a web browser from Perplexity with a built-in AI assistant that can summarize pages, manage email and carry out tasks across tabs. The browser itself is free to download. Some advanced assistant features are tied to paid Perplexity plans.
Why it's here
- +Free
- +Familiar Chromium-based browser
- +Built-in cited search
Watch out for
- −Means switching your main browser
- −Best features need a paid plan
- −Browser agents carry prompt-injection risk
#7Free option
AI meeting assistant that records, transcribes and summarizes your calls
Otter is an AI meeting assistant that joins Zoom, Google Meet and Teams calls to record, transcribe and summarize them, with action items and a chat to ask questions about past meetings. It has a free Basic plan. Pro costs $16.99 per user a month.
Why it's here
- +Free plan
- +Live transcription
- +Works with major video platforms
Watch out for
- −Bot joining calls can bother guests
- −Free plan limits
- −Summaries can miss nuance
Free · from $16.99/moTask agent
#8Free option
Bot-free AI notepad that turns your rough notes into meeting notes
Granola is an AI notepad that transcribes meetings from your computer's audio, without a bot joining the call, and combines the transcript with your own rough notes into clean meeting notes. You can then chat with past meetings. Basic is free with limited history; Business costs $14 per user a month.
Why it's here
- +No bot joins the call
- +Builds on your own notes
- +Clean, simple app
Watch out for
- −Runs on your device, so you must be in the meeting
- −Free plan keeps limited history
- −Fewer CRM integrations than sales-focused tools
Free · from $14/moAssistant
#9Free option
Google's asynchronous coding agent that works on your GitHub repo and opens PRs
Jules is an asynchronous coding agent from Google that clones your GitHub repository into a cloud VM, plans the work and opens a pull request when done. You hand it tasks and come back later rather than pairing with it live. The base tier allows 15 tasks a day; Google AI Pro and Ultra plans raise the limits.
Why it's here
- +Usable without paying
- +Works in the background
- +Shows a plan before it changes code
Watch out for
- −GitHub only
- −Not interactive like an editor agent
- −Plan names and limits have changed several times
#10Free option
Open-source personal AI assistant you run on your own computer and chat with
OpenClaw is an open-source personal AI assistant that runs on your own Mac, Windows or Linux machine and that you talk to through chat apps like WhatsApp, Telegram or Discord. It can manage email, calendars and files, browse the web and run shell commands. It is MIT licensed with no subscription; you choose the model it uses.
Why it's here
- +Runs locally and keeps state on your machine
- +Works from chat apps you already use
- +No subscription
Watch out for
- −Setup takes technical skill
- −Broad system access needs care
- −You manage updates and model costs
#11Free option
No-code builder for AI agents and apps, with a free plan
MindStudio is a no-code platform for building AI agents and small AI apps that you can run on demand, on a schedule or from other tools. It gives access to many models in one place. The free plan includes one agent and 1,000 runs a month; Individual costs $20 a month plus usage.
Why it's here
- +Free plan to start
- +Many models in one workspace
- +Quick to publish agents
Watch out for
- −Model usage billed on top
- −Less suited to complex integrations
- −Smaller community than big automation tools
Free · from $20/moTask agent
#12Free option
Open-source Python framework for teams of role-based AI agents
CrewAI is an open-source Python framework for building multi-agent systems where agents with defined roles work together on tasks. It is known for being quick to start with. CrewAI also runs a hosted platform with a free Basic plan and custom Enterprise pricing.
Why it's here
- +Simple, readable agent definitions
- +MIT licensed
- +Large community and examples
Watch out for
- −Less fine-grained control than LangGraph
- −Multi-agent runs can be costly in tokens
- −Debugging agent hand-offs is hard
#13Free option
Open-source platform for building and running continuous AI agents
AutoGPT is an open-source project for building, deploying and running AI agents that automate multi-step workflows. It began as one of the first autonomous GPT agents and now includes a low-code platform you can self-host. The code is on GitHub, with the classic agent under MIT and the newer platform under its own license.
Why it's here
- +Free and self-hostable
- +Large, long-running community
- +Visual builder for agents
Watch out for
- −Self-hosting takes effort
- −Less reliable than commercial tools
- −Mixed licenses across the repo
E#14Free option
Voice agents built on ElevenLabs' realistic voices
ElevenLabs Agents is ElevenLabs' platform for building conversational voice agents for phone, web and apps. It uses the company's text-to-speech voices, and extra call minutes cost $0.08 each with LLM usage billed separately. A free plan includes 15 minutes of calls, and BAAs are available on enterprise.
Why it's here
- +Very natural voices
- +Free plan to prototype
- +Same account covers TTS, dubbing and agents
Watch out for
- −LLM costs are extra
- −Burst minutes cost double
- −HIPAA BAA only on enterprise
Free · from $0.08/minAutonomous
A#15Free option
Open-source AI pair programmer that edits code in your terminal with git commits
Aider is an open-source AI pair programmer that runs in your terminal and edits code in your local git repository. It works with many LLMs, maps your codebase for context and commits each change so you can review or undo it. It is free to use; you pay only for the model API you connect.
Why it's here
- +Every edit is a git commit you can undo
- +Works with most model providers
- +Lightweight, no editor lock-in
Watch out for
- −Development has slowed in 2026
- −Less autonomous than newer agents
- −No built-in team features
#16Free option
AI receptionist with live North America-based receptionists as backup
Smith.ai is an answering service that combines an AI receptionist with human receptionists who can take over calls. The AI answers, qualifies and routes calls, and complex calls can be transferred to a live receptionist at any hour. It connects to CRMs and scheduling tools and is popular with law firms and service businesses.
Why it's here
- +Live receptionists available as backup
- +Free AI plan to start
- +Clio, HubSpot and Salesforce integrations
- +Can take payments via LawPay, Square, PayPal
Watch out for
- −Priced per call, which adds up for busy lines
- −Human plans are much pricier than AI-only rivals
- −Extra CRM integrations cost per call
Free · from $150/moAutonomous
#17Free option
Website live chat with Lyro, an AI agent, and a free plan
Tidio is a live chat and helpdesk tool for small businesses, and Lyro is its AI agent that answers customer questions on your site. The free plan includes 50 Lyro conversations in total, and paid Lyro plans start at $32.50 a month. It is a common pick for small online stores.
Why it's here
- +Free plan with 10 seats
- +Low-cost paid tiers
- +AI and human chat in one inbox
Watch out for
- −Lyro is priced separately from the helpdesk
- −Free Lyro conversations don't refresh
- −Limited for complex workflows
Free · from $24.17/moAutonomous
#18Free option
Agent platform for building custom AI chatbots, with a free tier
Botpress is a platform for building AI agents and chatbots for websites, messaging apps and internal tools. The free plan covers 100 conversations a month and three agents, and each conversation includes $0.10 of AI usage. Paid plans add white-label webchat, team roles and analytics.
Why it's here
- +Generous free plan
- +Flexible builder with code when needed
- +Unlimited agents on paid plans
Watch out for
- −Big price jump from Free to Plus
- −Steeper learning curve than plug-and-play bots
- −AI spend auto top-ups not configurable yet
Free · from $150/moTask agent
#19Free option
Shared inbox and website chat with an AI agent, flat per workspace
Crisp is a customer messaging platform with website chat, a shared inbox and an AI agent that can handle conversations end to end. Pricing is per workspace rather than per seat, with a free plan for two seats. AI features use included credits, so they require a paid plan.
Why it's here
- +Flat workspace pricing
- +Free plan for basic chat
- +Knowledge base and workflows on Essentials
Watch out for
- −AI requires a paid plan
- −Unclear which tier has the full AI agent
- −Prices exclude VAT
Free · from $45/moAutonomous
#20Free option
AI prospecting, research, drafting and a parallel dialer with a free tier
Regie.ai is a sales prospecting platform that combines AI agents, enrichment and a parallel dialer. You describe your ideal customer, it finds matching buyers, surfaces dated buying signals and drafts outreach in your voice. Every plan includes a built-in CRM, and paid plans add a dialer that calls up to five lines at once.
Why it's here
- +Real free plan, no card needed
- +Parallel dialer included from Pro
- +You only pay for enrichment that finds data
Watch out for
- −Rep stays in the loop; less hands-off than a full AI SDR
- −Team plan has a two-seat minimum
- −Credit math takes some getting used to
Free · from $49/moTask agent
#21Free option
Lead enrichment spreadsheet with Claygent, an AI web research agent
Clay is a data enrichment platform that pulls company and contact data from many providers into one table and lets AI agents research each row. Its agent, Claygent, browses the web to answer custom questions about a lead or account. Teams use it to build lead lists, score accounts and feed personalized data into outreach tools.
Why it's here
- +Waterfall enrichment across many providers
- +Claygent included on every plan, free too
- +Bring your own API keys
Watch out for
- −Steep learning curve
- −Credits burn fast on big lists
- −Does not send outreach itself
Free · from $167/moTask agent
#22Free option
B2B contact database and sequencer with background AI agents
Apollo.io is a sales platform that combines a B2B contact database, email sequencing, a dialer and AI features. Its AI Assistant can run agents in the background to research accounts and build prospecting workflows. A free plan with no time limit exists, and paid tiers add higher credit limits and AI features.
Why it's here
- +Large database plus sending in one place
- +Usable free plan
- +Integrates with major CRMs
Watch out for
- −Free plan connects Gmail only
- −Credit limits push you to paid tiers
- −AI features gated to higher plans
#23Free option
Signal-based outbound with AI copywriting, data and a dialer
Unify is an AI prospecting platform that combines B2B data, intent signals, multichannel sequences and a dialer. You can run outbound from a single chat interface, and plays trigger outreach when signals like job changes or hiring appear. A free plan covers up to three seats with limited credits.
Why it's here
- +Free plan with sequencing and dialer
- +Low per-seat price
- +Signals and data built in
Watch out for
- −CRM write-back only on Business
- −Website intent needs the top tier
- −Managed mailboxes cost extra
Free · from $20/moTask agent
#24Free option
Simple social scheduler with an AI Assistant and a free plan
Buffer is a social media scheduling tool with a built-in AI Assistant that helps write, refine and repurpose posts. The free plan covers up to three channels with ten scheduled posts each. Paid plans are priced per channel and add unlimited posts, analytics and team approvals.
Why it's here
- +Generous free plan
- +Cheap per-channel pricing
- +AI Assistant on every plan
Watch out for
- −AI helps you write but does not run accounts
- −Free plan limits AI replies
- −Costs grow with each channel
Free · from $5/moAssistant
#25Free option
AI answer engine with cited sources and deep research reports
Perplexity is an AI answer engine that searches the web and responds with cited sources, with research modes that read many pages and write longer reports. It is a quick way to get sourced answers instead of a list of links. There is a free plan, with Pro and Max subscriptions for heavier use.
Why it's here
- +Citations on every answer
- +Fast
- +Useful free plan
Watch out for
- −Source quality varies
- −Plan limits change often
- −Less good at long, structured analysis than dedicated tools