Developer tools

These tools are built for developers. They are listed for reference, with what each one does, how it is priced and who makes it. They are not scored, because the scoring in this guide is built for everyday users.

Updated monthly.

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AgentOps

Monitoring and debugging platform that records what AI agents do, what they cost and where they fail.

AgentQL

Query language and SDKs from TinyFish that let AI agents find and pull data from web pages.

AI2SQL

Turns plain-English questions into SQL for a connected database, and fixes or explains existing queries.

Anima

AI tool that turns Figma designs, cloned websites or prompts into working web apps and front-end code.

Anything (formerly Create)

AI app builder that turns a written description into a working mobile app, website or tool built with code.

AssemblyAI

Speech recognition API that turns recorded or live audio into text for developers

AutoScientist

Adaption's system that automates fine-tuning by adjusting training data and recipe toward a set goal

Berd

Block's open-source desktop app for working with AI agents through the goose backend

Bezi

AI assistant for Unity game developers that works inside the real project

Bland AI

Platform for building AI phone agents that handle calls for regulated businesses

Bolt.new

AI builder that creates websites and web apps from a chat description, with hosting included

Brave Search API

Web search API from Brave's independent index, used to feed results into apps and AI agents

Bubble

No-code platform for building and launching web and native mobile apps, with AI to generate them

BuilderKit

Next.js starter code for building and launching AI software products faster

Buzz

Block's open-source team chat where AI agents join channels as members alongside people

ChainGPT

Crypto-focused AI tools and APIs, from a Web3 chatbot to smart contract generation and auditing

Claude Code

Anthropic's coding agent that reads a codebase, edits files and runs commands from the terminal, IDE or web

Claude Code Review

A Claude Code service that sends several agents to review each GitHub pull request and comment on problems

Claude Managed Agents

Anthropic's hosted APIs for building and running Claude agents in the cloud without managing infrastructure

Claude Security

Anthropic's code scanner that finds vulnerabilities in a GitHub repository and suggests patches

Cloudflare Dynamic Workers

Cloudflare service that starts isolated sandboxes on demand to run code written by AI agents

Code Arena

Arena's public testing ground where AI coding models build web apps and people vote on the results

Codemaps

Cognition feature that draws an AI-annotated map of how code in a repository fits together

Codex

OpenAI's coding agent that writes, fixes and reviews code from the ChatGPT app, terminal, editor or cloud

Codex Security

OpenAI security agent that scans code repositories for vulnerabilities, tests them and proposes fixes

Comfy Deploy

Platform for running ComfyUI image workflows in the cloud and turning them into APIs for apps

Cursor

AI code editor from Anysphere built around coding agents that write, test and review code

Cursor 2.0

October 2025 Cursor release that added an agent-centred layout and the first Composer model

Cursor 3

April 2026 Cursor release with a new agent workspace built from scratch for running many agents

Cursor Cloud Agents

Cursor coding agents that run in cloud machines and can be started from web, phone, Slack or GitHub

Cursor for iOS

Cursor iPhone and iPad app for starting, watching and merging the work of coding agents

Cursor Origin

Cursor's own code hosting service with repos, pull requests, GitHub sync and built-in coding agents

Cursor Router

Cursor system that sends each coding request to the cheapest model able to handle it well

Databricks Mosaic AI

Databricks tools for building, deploying and monitoring AI agents and models on company data

DataCamp DataLab

Browser data notebook from DataCamp where an AI assistant writes and runs analysis code

Deforum

Open-source Stable Diffusion animation tools, plus a web studio and Discord bot

Devin Desktop (formerly Windsurf)

Cognition's coding editor, formerly Windsurf, for running and managing many coding agents in one place

Devin Fusion

Cognition coding agent setup that pairs a top model with a cheaper helper model to cut costs

DryRun Security

AI code security scanner that reviews pull requests and repositories for exploitable risks

ElevenLabs Agent Workflows

Visual editor in ElevenLabs' agent platform for designing branching conversation flows for voice and chat agents.

ElevenLabs UI

Open-source React components for building voice agent and audio interfaces on ElevenLabs

Ellipsis

Managed cloud coding agents, defined as config files in a repo, for code review, fixes and features

Emergent

Chat-based app builder where AI agents design, code and deploy web and mobile apps from plain-language requests.

Encord

Data platform for AI teams to collect, curate, label and evaluate training data across video, images, LiDAR and text.

Eraser AI

Diagramming and documentation tool that draws architecture, database and flow diagrams from text or pasted code.

eve (Vercel)

Open-source Vercel framework where an AI agent is defined as a folder of files for its model, tools and skills.

Evidently AI

Open-source framework for testing and monitoring LLM apps, AI agents and machine learning models.

Exa

Web search API built for AI agents, returning search results, page text and research answers for software to use.

Exa Agent

Web research API from Exa that splits big research and list-building jobs across subagents and returns cited, structured results.

Exa Deep Max

Exa search API endpoint that runs many parallel web searches to answer hard research questions

FlutterFlow

Visual app builder for mobile, web and desktop apps that exports real Flutter code and adds AI generation.

Forloop

No-code and Python platform for scraping websites, cleaning the data and automating data pipelines.

Frontly

No-code builder that creates custom business apps such as client portals and trackers from a written description.

Future AGI

Open-source platform for testing, evaluating and monitoring AI agents, with simulations, tracing and guardrails.

Gemini CLI

Google's open-source AI agent that runs Gemini in the terminal for coding and other tasks

Gemini Computer Use

Gemini API tool that lets AI agents operate browsers, phones and desktops through screenshots

Gemini Deep Research Agent

Gemini API agent that plans and runs multi-step web research and returns cited reports

Gemini Deep Research Max

Google's slower, more thorough research agent for developers, built on Gemini 3.1 Pro

Gemini Enterprise Agent Platform

Google Cloud's platform for building and running AI agents, which replaced Vertex AI

Gemini Managed Agents

Gemini API service that runs AI agents in Google-hosted Linux sandboxes from a single call

Genkit

Google's open-source SDK for building AI features and agents into apps in several languages

GitHub Agent HQ

GitHub's hub for assigning coding tasks to Copilot and third-party agents like Claude and Codex

Glaze

Raycast's Mac app for making personal desktop apps by chatting with an AI agent

Google AI Studio

Google web tool for trying Gemini models, testing prompts and getting API keys

Google AI Studio Build mode

Build mode in Google AI Studio that creates full web or Android apps from a prompt

Google Antigravity

Google's agent-first coding platform, now a standalone desktop app for running and scheduling parallel coding agents.

Google Firebase

Google app backend platform with databases, hosting, sign-in and AI features

Google Opal

Google Labs no-code builder for AI mini-apps, shutting down on 17 November 2026

Not in the UK

Google Stitch

A Google Labs experiment that turns a text prompt or sketch into app screen designs and front-end code

GPT4All

Free desktop app from Nomic for running open-source AI models offline on a computer

Gradio

Free Python library for building web interfaces and demos for machine learning models

Grok Build

Open-source SpaceXAI coding agent that runs in the terminal, in scripts or inside editors

Grok Voice Agent API

xAI's API for building spoken voice agents that call tools and search live data

Helicone

Open-source gateway and monitoring tool for apps built on large language models

Hermes Agent

Nous Research's open-source AI agent that remembers past work and runs across chat apps

HeyGen CLI

Command-line tool for making HeyGen avatar videos from scripts, pipelines and AI agents

HTTPie AI

AI assistant in the HTTPie API client that builds HTTP requests from plain-language prompts

Intuned

Platform where an AI agent builds and runs web scrapers and integrations for sites without APIs

Inworld Realtime TTS

Inworld AI's text-to-speech API for live voice agents, with voice cloning and plain-English voice direction

Jules Tools

Command-line tool for Google's Jules coding agent, to start and track coding tasks from the terminal

KaneAI

TestMu AI's software testing agent that plans, writes, runs and repairs tests from plain-language instructions

Keenable

Web search API built for AI agents and labs, with its own index of over 100 billion documents

Kiro

AWS-backed AI coding environment that turns prompts into specs and tasks before writing code

Kitesurf

Cloudflare's lightweight browser for AI agents, running on Workers instead of a full Chrome engine

LangChain

Open-source frameworks and the LangSmith platform for building, testing and running AI agents

Langtail

Spreadsheet-style tool for writing, testing and deploying AI prompts, with a firewall against prompt attacks

LangWatch

Testing, evaluation and monitoring platform for AI agents, with simulated users and red-teaming

LiveAvatar by HeyGen

HeyGen's API for real-time talking avatars that listen and reply on video inside other apps

Llama Coder

Free open-source web app from Together AI that builds small React apps from a single prompt

LM Studio Bionic

LM Studio's desktop agent for coding and documents that runs on local or cloud-hosted open models

Lovable

Builds full-stack web apps, websites and internal tools from plain-language descriptions in a chat

Lovable Payments

Built-in Paddle or Stripe checkout for apps made in Lovable, set up through chat

Mistral Studio

Mistral's platform for companies to build, test, deploy and monitor AI agents and apps on Mistral models

Mistral Vibe CLI

Mistral's open-source coding agent for the terminal, also available in VS Code, JetBrains, Zed and the web

Mistral Workflows

Mistral's system for running multi-step AI business processes reliably, with pauses for human approval.

Momentic

An AI testing platform that writes and runs end-to-end tests for web, iOS and Android apps

Muse Code

Meta's terminal coding agent, built around its Muse Spark models, that plans, writes and checks code

n8n

A visual workflow automation tool for building AI agents and connecting apps, available hosted or self-hosted

NVIDIA NemoClaw

NVIDIA's open-source stack for running always-on AI agents like OpenClaw and Hermes inside a locked-down sandbox

Nylas

APIs that let apps and AI agents read and send email, manage calendars and record meetings

Ollama

Free tool for running open AI models on a home computer, with optional paid cloud models

Onelink Agent Wallet (Link for Agents)

Stripe's wallet that lets AI agents pay online with one-time cards after the owner approves each purchase

Not in the UK

OpenAI Agent Builder

OpenAI's visual canvas for building multi-agent workflows, being withdrawn on 30 November 2026.

OpenAI Apps SDK

OpenAI's toolkit for building interactive apps that run inside ChatGPT conversations, based on MCP.

OpenHome

Open-source voice AI platform and developer kit for building private, always-on voice assistants for devices

Openlayer

Platform for testing, monitoring and governing a company's AI models and agents

OpenRouter Fusion

OpenRouter option that sends one prompt to a panel of AI models and has a judge model merge their answers.

Parallel Search

Web search API built for AI agents, returning ranked links and condensed page excerpts

pen.dev (formerly Pencil)

Design canvas where AI agents and people design apps and sites together, then export to code

Petri

Anthropic's free open-source tool that uses AI agents to probe other AI models for risky behaviour

Pieces

Desktop app that records a searchable memory of your work and feeds it to AI assistants

Pinecone

Managed vector database that lets AI apps and agents search company data by meaning

Pinokio

Free open-source app that installs and runs AI tools on your own computer in one click

Postman

Platform for designing, testing and documenting APIs, now with AI agents and an MCP server

Prodia

Inference API for running image and video generation models quickly and cheaply across different chips

Pulumi Neo

AI agent inside Pulumi that writes, deploys, debugs and governs cloud infrastructure from plain-language requests

Qoder

Agentic coding platform with a desktop app, IDE, CLI and mobile app for directing AI coding agents

Ramp Router

Ramp's single API for many AI models that sends each request to the cheapest model that fits

Relume

AI website builder that turns a brief into a sitemap, wireframes and a publishable marketing site

Remotion

A React framework for making videos in code, now usable through AI coding agents

Replicate

Cloud API for running, fine-tuning and deploying thousands of open and commercial AI models

Replit

Browser-based platform where an AI agent builds, hosts and publishes apps and websites from a text prompt

Replit Agent 4

Fourth version of Replit's app-building agent, with parallel tasks and a design canvas

Retell AI

Platform for building AI voice agents that make and answer business phone calls

Retool

Platform for building internal business apps, workflows and AI agents on a company's own data

Reve API

Developer API for Reve 2.1's native-4K image generation and its layout-based editing

Rork Max

Browser-based AI builder that writes native Swift apps for iPhone, iPad, Watch, TV and Vision Pro

Runway Dev

Runway's developer API for video, image and audio models from Runway and other labs, plus live avatars

Screenshot to Code

Open-source tool that turns screenshots, mockups and screen recordings into working front-end code

Skills (skills.sh)

Vercel's open directory and command-line tool for installing reusable skills into AI coding agents

Slack Code

Slack feature that opens a channel where a coding agent builds software while the team watches and approves

Slater

AI code editor for adding custom JavaScript to Webflow sites without leaving the project

Splunk Agent Observability (formerly Galileo)

Monitoring, evaluation and guardrails for AI agents in production, formerly sold as Galileo

Stability Matrix

Free desktop app that installs and manages Stable Diffusion tools like ComfyUI and Forge on a PC

Tavus

APIs for real-time AI video humans that can hold face-to-face conversations, plus a consumer companion app

tldraw

React SDK for building whiteboards and canvas apps, also behind the Make Real sketch-to-website demo

Together AI

Cloud platform for running, fine-tuning and training open-source AI models through an API or rented GPUs

Upsonic (formerly GCA)

Open-source Python framework for building autonomous AI agents and multi-agent teams

v0 by Vercel

Vercel's AI app builder that turns text prompts and images into working web apps and publishes them

Vapi

Developer platform for building, testing and running AI phone and voice agents through an API

Warp 2.0

Warp's terminal rebuilt around AI coding agents that can run in parallel on development tasks.

Warp Oz

Warp's cloud platform for running and supervising many coding agents in parallel across a team

Windsurf 2.0

Cognition's agentic code editor update that adds a board for managing many coding agents and the Devin cloud agent.

WorkOS

APIs that add sign-in, single sign-on and other enterprise account features to software products.

xAI Custom Voices

xAI's voice cloning for its Grok speech APIs, built from about a minute of recorded speech.

Xirp

Spotify's Mac app for running several AI coding agents side by side across projects and sessions.

ZCode

Z.ai's desktop coding agent app, built around its GLM models, for running several coding agents on long tasks.

Zep

Memory and context service that gives AI agents the facts they need from business data and past conversations.