Best AI Developer Tools Tools (2026)

Pi Coding Agent

AI Agents

A terminal-based coding agent

Claude Code

AI Coding

Anthropic's agentic coding tool for developers. Claude Code understands your codebase, edits files, runs commands, and helps you ship faster.

OpenCode

AI Coding

OpenCode - The open source coding agent.

tiun

Developer Tools

tiun is the AI-native backend for builders that offers authentication, payments, customer database, and AI analytics in one system.

Respan

Developer Tools

Respan unifies LLM observability, evals, prompt optimization, and an AI gateway so teams can ship reliable AI applications.

Archal

Developer Tools

Create isolated sandboxes with stateful API environments for GitHub, Slack, Stripe, and more. Test AI agents through REST or MCP, then reset to a known state.

GitNexus

Developer Tools

GitNexus indexes any codebase into a knowledge graph of every dependency, call chain, cluster, and execution flow, so AI agents never miss code.

Shellular

Developer Tools

Run Claude Code, Codex, Cursor, and OpenCode on mobile and write code from your phone. Shellular gives you secure remote access to your dev machine: a real agent UI, terminal, files, Git, ports, and browser DevTools, all from your phone.

docs.page

Developer Tools

Instantly serve markdown from any GitHub branch as modern, agent-ready docs, with AI chat, MCP, and llms.txt.

AI Autocomplete SDK

Developer Tools

AI Autocomplete supercharges any text box, by guiding your users as they type with what your product can do. Works in minutes, just drop in the SDK to your text box.

Openship

Developer Tools

Deploy anything, own everything. Self-hostable, AI-powered deployment platform with free SSL, unlimited domains, instant rollbacks, and CLI/MCP support. Open source and free forever.

Ryvn

Developer Tools

Ryvn handles BYOC and on-prem infrastructure, so you can close enterprise deals — without the support burden.

Herdr

Developer Tools

Herdr is to coding agents what tmux is to terminals: an agent multiplexer that runs where your agents run. Real panes, agent state at a glance, ssh from anywhere, no app.

Cube Sandbox

Developer Tools

Instant, Concurrent, Secure & Lightweight Sandbox Service for AI Agents

CSS Toggle Library

Developer Tools

A library of pure-CSS toggles, switches, checkboxes and radios — no JavaScript, no dependencies. Click any toggle to view and copy its self-contained CSS.

agentgateway

Developer Tools

The open-source gateway for AI traffic — LLM, MCP, A2A, and HTTP in one data plane.

Email SDK

Developer Tools

A TypeScript email SDK for unified email sending with Resend, SMTP, Postmark, SendGrid, Mailgun, Unosend, AWS SES, fallbacks, plugins, and a local CLI.

Liveblocks

Developer Tools

Liveblocks provides the infrastructure to handle concurrent edits on shared data, so people and AI agents can collaborate without breaking your app.

Encore Cloud

Developer Tools

Encore Cloud is a Development Platform that helps you automate DevOps and infrastructure in AWS & GCP. Spend 93% less time on DevOps and focus on building product.

exe.dev

Developer Tools

Build apps or SSH into a persistent Linux VM. ssh exe.dev.

WebMCP Directory

Developer Tools

A live directory of websites exposing WebMCP tools to AI agents. Browse tools, inspect schemas, query the API.

Walrus

Developer Tools

Walrus is the Verifiable Data Platform for developers. Store, verify, and control your data with cryptographic proofs, programmable access, and always-on reliability.

Box

Developer Tools

Persistent Linux VMs with SSH, Docker inside, and IPv4 per machine. One command: `box new`. $20 = 555 hours of 4 vCPU / 8 GB. Bring any agent: Claude Code, Codex, OpenCode. Cheaper than E2B, Codespaces, or Daytona.

cmux

Developer Tools

Native macOS terminal built on Ghostty. Works with Claude Code, Codex, OpenCode, Gemini CLI, Kiro, Aider, and any CLI tool. Vertical tabs, notification rings, split panes, and a socket API.

Mesa

Developer Tools

Connect agents to the files they need, run parallel agent swarms on instant branches, and track every change through one API with sub-50ms reads and writes.

Entire

Developer Tools

We are going beyond repositories, building a developer platform where agents and humans can collaborate, interact, and grow. The birth of a new galaxy in this universe draws near.

Netlify

Developer Tools

Create with AI or code, deploy instantly on production infrastructure. One platform to build and ship.

Bug0

Developer Tools

Bug0 is your AI QA Engineer. Agentic testing with a dedicated QA engineer (forward-deployed engineer) delivers managed browser testing for web apps with CI/CD checks and human verified end to end tests.

OpenComputer

Developer Tools

OpenComputer provides persistent VMs that hibernate when idle and wake in seconds. Real computers for AI agents, not sandboxes. Deploy and run LLM agents on durable infrastructure.

Ghost

Developer Tools

Postgres databases for agents. Unlimited forks. Hard caps. No surprise bills.

Linq

Developer Tools

Reliably deliver messages globally and take advantage of emoji reactions, voice notes, rich media, typing indicators, group chats, and more through native iMessage and RCS protocols.

Convex

Developer Tools

Convex is the backend platform that keeps your app in sync. Everything you need to build your full-stack project.

RobotActions

Developer Tools

Cloud device farm platform for real Android and iOS testing. First device farm with MCP AI agent support. Selenium, Appium, Playwright on real devices. Fully managed, secure, and scalable.

Cekura

Developer Tools

End-to-end testing and observability for Conversational AI. Run pre-production simulations across diverse personas and monitor production conversations to test instruction-following, tool calls, and conversational quality.

Taalas

Developer Tools

We are creating a platform that makes it easy to turn any deep learning model into custom silicon quickly.

Envariant

Developer Tools

Envariant — AI interpretability SDK for foundation model builders.

Terminal Use

Developer Tools

All in one hosting infrastructure for long running agents

Canary

Developer Tools

Canary reads your PRs, understands your codebase, and runs feature and regression tests against your preview app. Catch broken auth flows, slow page loads, and failing checkouts before production.

SuperDocs

Developer Tools

Generate beautiful, comprehensive documentation for your codebase in minutes using AI.

Stack Auth

Developer Tools

Stack Auth is the open-source Auth0 alternative. We are your login and signup page, and everything that comes with that.

CodexBar

Developer Tools

Tiny macOS menu bar app that keeps your Codex, Claude Code, Cursor, Gemini, Antigravity, Droid (Factory), Copilot, and z.ai limits visible.

21st.dev

Developer Tools

Explore, copy, and remix thousands of high-quality React components published to the 21st.dev Community by designers and developers.

Sonarly

Developer Tools

Start trusting your production alerts.

Warestack

Developer Tools

Warestack is a delivery intelligence and governance platform that unifies development signals across GitHub, CI/CD, and project tools. Get actionable insights into delivery performance, risk, and bottlenecks without changing developer workflows.

Chamber

Developer Tools

Maximize GPU utilization and reduce AI infrastructure costs. Chamber provides real-time visibility, intelligent scheduling, and automatic fault detection for ML teams. Backed by Y Combinator W26.

Driver

Developer Tools

Stop losing context in complex codebases. Driver creates structured, AI-ready documentation and delivers it through MCP to Cursor, Claude Code, Copilot, and more.

SRE.ai

Developer Tools

SRE.ai is the most advanced natural language DevOps platform, powering automation and software delivery for fast-moving organizations at scale, freeing up teams to build what's next.

Mendral

Developer Tools

Mendral is a team of AI agents that diagnose CI failures, catch issues before they ship, and fix them automatically.

Railway

Developer Tools

Railway is a full-stack cloud for deploying web apps, servers, databases, and more with automatic scaling, monitoring, and security.

Blaxel

Developer Tools

Blaxel is the perpetual sandbox platform that keeps infinite secure sandboxes on automatic standby with co-hosted agents for near instant latency. Achieve 25ms resume times, eliminate cold starts, and only pay for what you use. Perfect for tech startups building AI agents that code.

CodeSandbox

Developer Tools

CodeSandbox is a cloud development platform that empowers developers to code, collaborate and ship projects of any size from any device in record time.

Review Fast

Developer Tools

Review AI-generated code faster with Review Fast

TheStage AI

Developer Tools

An automated inference acceleration stack featuring a world-leading inference engine that supports all NVIDIA GPUs and edge devices.

Decode

Developer Tools

An infinite canvas to draw and code on

Jam

Developer Tools

Report bugs in seconds, and get back to what you were doing. It's as easy as taking a screenshot. Fast for you, and perfect for the engineers.

Thesys

Developer Tools

Frontend infrastructure for AI products. Build dynamic, real-time UIs with C1 Generative UI API.

Autosana

Developer Tools

Create natural language E2E tests for mobile apps in seconds. No code required. Self-healing tests that adapt to UI changes. Supports iOS and Android apps built with any framework.

ForeverVM

Developer Tools

The sessionless code interpreter

Vibetunnel

Developer Tools

Turn any browser into your terminal & command your agents on the go.

Helicone

Developer Tools

The open-source platform for logging, monitoring, and debugging.

Golf

Developer Tools

APIs were built for humans. Agents need more - structured intent, secure access, and native interoperability. MCP is the new standard. Speak the protocol, or get left behind.

Klavis AI

Developer Tools

Klavis AI Open Source MCP Integrations for AI Applications. Our API provides hosted, secure MCP servers, eliminating auth management and client code.

Boxo Super App Platform

Developer Tools

Turn your app into a Super App with Boxo Super App Platform. Connect to Boxo SDK once and gain access to multiple customisable white-label services like marketplace, esim, & travel booking.

Fern

Developer Tools

Start with OpenAPI. Generate SDKs in multiple languages and interactive API documentation.

Salad

Developer Tools

Save up to 90% on cloud costs compared to hyperscalers. Deploy AI/ML production models easily on the world's largest distributed cloud. Perfect for AI inference, batch processing, molecular dynamics & more.

Comet

Developer Tools

Comet provides an end-to-end model evaluation platform for AI developers, with best-in-class LLM evaluations, experiment tracking, and production monitoring.

GitHub Gist

Developer Tools

GitHub Gist: instantly share code, notes, and snippets.

Maxim

Developer Tools

Evaluate and ship your AI applications with quality, speed, and reliability.

Lucidic.AI

Developer Tools

Lucidic AI is a software company that offers tools for explaining and interpreting complex AI models, providing insights into model behavior and transparency in outputs.

Theneo

Developer Tools

Create stunning, low-maintenance API docs with Theneo. Designed for developers, PMs, and technical writers. Join 12,000+ companies to automate changelogs and boost API adoption by 3x. Start free today!

DevZero

Developer Tools

Enhance developer experience and streamline coding with Cloud Development Environment. Standardized collaborative production-symmetric workspaces.

Zoo

Developer Tools

Zoo creates infrastructure for hardware design. We're laying the foundation for a modern hardware design toolkit, so that you can create new design tools never before possible.

Modal

Developer Tools

Bring your own code, and run CPU, GPU, and data-intensive compute at scale. The serverless platform for AI and data teams.

LiveKit

Developer Tools

Learn how to get started with LiveKit.

Langfuse

Developer Tools

Open source LLM engineering platform - LLM observability, metrics, evaluations, prompt management.

Arize AI

Developer Tools

Increase model velocity and improve AI outcomes with Arize's AI and ML observability platform. Discover issues, diagnose problems, and improve performance.

Devpost

Developer Tools

Participate in online virtual and in-person hackathons to build products, practice skills, learn technologies, win prizes, and grow your network.

GitHub

Developer Tools

GitHub is where people build software. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects.

TensorFlow

Developer Tools

An end-to-end open source machine learning platform for everyone. Discover TensorFlow's flexible ecosystem of tools, libraries and community resources.

Featured

Supabase

Developer Tools

Build production-grade applications with a Postgres database, Authentication, instant APIs, Realtime, Functions, Storage and Vector embeddings. Start for free.

Galileo

Developer Tools

Inspecting Your ML Data Needs a Purpose-built Tool

E2B

Developer Tools

Add code interpreting in your AI apps and AI agents

Featured

Roboflow

Developer Tools

Everything you need to build and deploy computer vision models, from automated annotation tools to high-performance deployment solutions.

Featured

RapidAPI

Developer Tools

Discover Rapid's API Marketplace for easy API monetization and better API management. Learn about API testing tools and monetize your APIs effortlessly.

Featured

Neon

Developer Tools

The database you love, on a serverless platform designed to help you build reliable and scalable applications faster. Ship faster with Postgres