Listed whether or not they pay us. Prices from each tool's own pricing page, checked Oct 16, 2026.

AI tools for developers

25 tools · 22 with a free plan · 1 trial only · 18 with an API · middle starting price $20 a month

Cheapest paid plan per month for the 21 tools here that publish one; the middle one is $20. One scale for every page on this site.

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25 tools

Cal.comcal.com

Open source scheduling infrastructure and Calendly alternative with a generous free plan, routing forms and APIs.

  • Green flag: Free plan
  • Green flag: No card for trial
  • Green flag: Doesn't train on your data
  • Red flag: Free plan watermark
$12/mo

Free plan · Per seat

Visit site Cal.com (opens the tool's site)

Difydify.ai

Open source LLM app platform for building agents, RAG chatbots and workflows, available as cloud or self hosted.

  • Green flag: Free plan
$59/mo

Free plan · Credits

Visit site Dify (opens the tool's site)

Cartesiacartesia.ai

Ultra low latency Sonic TTS, speech to text and voice agent platform built for real time developers.

  • Green flag: Free plan
  • Green flag: Some credits roll over
$5/mo

Free plan · Credits

Visit site Cartesia (opens the tool's site)

GitHub Copilotgithub.com/features/copilot

AI pair programmer with completions, chat, agent mode and cloud coding agent across major IDEs and GitHub.

  • Green flag: Free plan
  • Green flag: No card for trial
  • Red flag: Credits reset monthly
$10/mo

Free plan · Credits

Visit site GitHub Copilot (opens the tool's site)

Linearlinear.app

Issue tracker for software teams with AI agents that triage issues, run coding sessions and automate loops.

  • Green flag: Free plan
  • Green flag: Cancel online
  • Green flag: Credits roll over
  • Green flag: Doesn't train on your data
$10/mo

Free plan · Per seat

Visit site Linear (opens the tool's site)

Lovablelovable.dev

Chat based AI builder that turns prompts into full stack web apps with hosting, database and auth.

  • Green flag: Free plan
  • Green flag: Cancel online
  • Green flag: No card for trial
  • Green flag: Some credits roll over
$25/mo

Free plan · Credits

Visit site Lovable (opens the tool's site)

Skyvernskyvern.com

Open source LLM and vision browser automation with no code workflow builder, 2FA handling and managed cloud.

  • Green flag: Free plan
  • Green flag: No card for trial
$29/mo

Free plan · Credits

Visit site Skyvern (opens the tool's site)

Snyksnyk.io

Developer security platform scanning code, open source dependencies, containers and IaC with AI assisted fixes.

  • Green flag: Free plan
  • Green flag: No card for trial
$25/mo

Free plan · Credits

Visit site Snyk (opens the tool's site)

Browser Usebrowser-use.com

Open source library and cloud API that lets LLM agents control web browsers for automation.

  • Green flag: Free plan
  • Green flag: No card for trial
  • Green flag: Credits don't expire
Free

Free plan · One time payment

Visit site Browser Use (opens the tool's site)

Clinecline.bot

Open source autonomous coding agent for VS Code and CLI; bring your own keys or pay inference at cost.

  • Green flag: Free plan
Free

Free plan · Contact sales

Visit site Cline (opens the tool's site)

CrewAIcrewai.com

Open source Python framework and enterprise platform for orchestrating teams of role based AI agents and event driven flows.

  • Green flag: Free plan
  • Red flag: Trains on your data
Free

Free plan · Contact sales

Visit site CrewAI (opens the tool's site)

Questions

Are these tools free for developers?

22 of these 25 tools have a free plan. The rest offer a trial or start at a paid plan; each listing shows the cheapest one.