Best AI Developer Tools

Infrastructure and tooling for developers building AI apps and agents: databases, sandboxes, browsers, observability and durable workflows. We rank these ourselves, and featured spots are labeled (how we make money). Updated October 2026.

Supabase

Postgres with auth, storage, realtime and edge functions in one backend, and the default database behind many AI app builders. Free projects pause after a week idle.

Free / Pro from $25/mo

Warp

A modern terminal with a built-in coding agent that uses models from OpenAI, Anthropic and more. Connects to Slack, Linear and GitHub, with cloud agents on paid plans.

Free / paid plans with included agent usage

Temporal

Durable execution: workflows survive crashes and deploys with automatic retries and timers that can wait for months. Runs OpenAI Agents SDK and Google ADK calls as durable steps. Code-first, aimed at engineering teams.

Cloud from $50 per million actions; $150 free credits

Modal

Serverless GPUs and CPUs billed by the second, plus sandboxes for running agent code. The quickest path from a Python function to scaled inference or batch jobs.

$0 + compute ($30/mo included) / Team $250/mo

Langfuse

Open-source tracing, prompt management and evals for LLM apps and agents. Free to self-host, with a generous cloud free tier.

Free (50k units) / Core $29/mo; self-host free

E2B

Secure cloud sandboxes where agents run code and commands, billed per second. CPU-only, with up to 1-hour sessions on the free tier and 24 hours on Pro.

Free ($100 one-time credits) / Pro $150/mo + usage

Browserbase

Hosted headless browsers for agents that need to use the web, with captcha solving, proxies and its own Stagehand framework. The go-to for browser automation at scale.

Free / from $20/mo

Herdr

A terminal workspace that keeps many coding agents (Claude Code, Codex, Cursor, opencode and more) running across projects and machines, and flags which ones are blocked. Terminal-only, so for experienced builders.

Free (open source)

FAQ

What is the best AI tool for AI developer tools?

Our top pick is Supabase. Postgres with auth, storage, realtime and edge functions in one backend, and the default database behind many AI app builders. Free projects pause after a week idle.

What are the alternatives to Supabase?

We also rank Warp, Temporal, Modal. Each one has a short verdict on this page.

Are these rankings paid?

No. Rankings are editorial. Paid featured spots are always labeled Featured · Sponsored, and some links are disclosed affiliate links that never change our verdicts.

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