Best AI tools to connect AI to my apps

Add-ons that plug assistants like Claude and ChatGPT into other apps and services, so they can do more than chat.

50 tools, ranked by how well reviewers rate them, how much people are talking about them this week, and how easy they are to start with. Filter by price, skill or device →

All tools for this task

universal-modder

Build Websites & Apps
#1

Lets programmers use Claude to mod PC games.

FreeTechnicalMac / PC app, Add-on

OpenBot

Automation & AI Helpers
#2

Free software for running AI 'coworkers' that each have their own browser and files. Needs technical setup.

FreeTechnicalAdd-on

open-seo-mcp-skills

Marketing & Sales
#3

Free add-ons that let Claude do keyword research and SEO checks. Needs some technical setup.

FreeTechnicalAdd-on

Articos MCP

Marketing & Sales
#4

Test your marketing message on simulated customers before you launch.

Price not confirmedSome setupAdd-on, Web

Manifold MCP

Marketing & Sales
#5

Gives an AI assistant marketing data like search rankings, social posts, and ads. For tech-savvy marketers.

Price not confirmedTechnicalAdd-on, Web

AIHOT

Automation & AI Helpers
#6

Free code for running your own AI news site. It finds trending topics and writes a daily report by itself. You pick the sources. Needs a programmer to set up.

FreeTechnicalAdd-on

Wan2.2 14B Fast

Video
#7

Free online demo of the Wan 2.2 video model: turn a picture plus a description into a short video, quickly. We list this one copy instead of the many look-alikes.

FreeTechnicalAdd-on, Web

Qwen-Image-Edit-2511-LoRAs-Fast (prithivMLmods)

Images & Design
#8

A copy of the Qwen photo-editing demo with style add-ons.

FreeTechnicalAdd-on, Web

codex-with-chatgpt

AI Chatbots & Assistants
#9

A trick for programmers: ChatGPT does the planning, and OpenAI's Codex coding tool does the actual work.

FreeTechnicalAdd-on

FireRed Image Edit 1.0 Fast

Images & Design
#10

Free online demo for editing photos with instructions, quickly.

FreeTechnicalAdd-on, Web

shaders

Build Websites & Apps
#11

Ready-made animated, glowing visual effects that web designers can drop into a website. You'll need someone who builds sites.

FreeTechnicalAdd-on

chat-on-steroids

AI Chatbots & Assistants
#12

Gives ChatGPT extra powers on your computer, like using Chrome and picking up long tasks where it left off. Fiddly to install.

FreeTechnicalAdd-on

Easel

Marketing & Sales
#13

A free AI that spots social media trends, writes posts and publishes them, mainly for Chinese platforms like Xiaohongshu and Douyin.

FreeTechnicalAdd-on

Qwen-Image-Edit-2509-LoRAs-Fast

Images & Design
#14

A copy of the Qwen photo-editing demo.

FreeTechnicalAdd-on, Web

x64dbg-mcp-server

Automation & AI Helpers
#15

Lets an AI assistant drive x64dbg, a tool security researchers use to pick apart programs. Very niche.

FreeTechnicalAdd-on

Qwen-Image-Edit-2511-LoRAs-Fast

Images & Design
#16

Free online demo that poses a person in a photo to match a reference pose.

FreeTechnicalAdd-on, Web

Blokkily

Music & Voice
#17

Experimental music software that AI assistants can control.

Price not confirmedTechnicalAdd-on

agent-memory

Automation & AI Helpers
#18

Gives AI coding helpers a long-term memory, stored as simple notes on your computer. One for programmers.

FreeTechnicalAdd-on

headcount

Automation & AI Helpers
#19

A pretend company made of AI 'departments' (legal, finance, HR and more), each with its own skills. Runs inside Claude Code or ChatGPT.

FreeTechnicalAdd-on

solidcraft

Automation & AI Helpers
#20

A free 3D design program for making precise parts, like things you'd 3D-print, and an AI can operate it too.

FreeTechnicalAdd-on

unigit-ecosystem

Automation & AI Helpers
#21

The home page for a project called UNIGIT. There isn't much here yet beyond its mission: AI for everyone.

FreeTechnicalAdd-on

reverify

Build Websites & Apps
#22

Makes an AI double-check its claims against real evidence before it says them. Built for security research, but the idea is simple: fewer made-up answers.

FreeTechnicalAdd-on

northcinder

Automation & AI Helpers
#23

An add-on that lets an AI assistant compare products for you and check with you before it buys anything.

FreeTechnicalAdd-on

High Resolution FireRed Image Edit 2K

Images & Design
#24

Edit photos with instructions and keep the result sharp, at 2K.

FreeTechnicalAdd-on, Web

awesome-remote-mcp-servers

Automation & AI Helpers
#25

A list of add-ons that plug AI assistants like Claude into other apps and services. Handy if you're tech-curious.

FreeTechnicalAdd-on

lcu

Build Websites & Apps
#26

Lets programmers use OpenAI's 'take over the computer' feature outside OpenAI's own app.

FreeTechnicalAdd-on

second-brain-os

Productivity
#27

A guide and starter kit for an AI-run notes system in Obsidian that keeps itself organized. Expect some setup.

FreeTechnicalAdd-on

KV Image to Clip

Video
#28

Free online demo that turns a still picture into a short clip.

FreeTechnicalAdd-on, Web

Kev

Automation & AI Helpers
#29

Ask a question and get an answer as a probability. A research toy.

FreeTechnicalAdd-on, Web

Box

For Developers
#30

An AI app suite for Android that works fully offline, so nothing leaves your phone.

FreeTechnicalAndroid, Add-on

Edi Life OS

Automation & AI Helpers
#31

A personal life dashboard you run yourself, with a way for AI assistants to read it.

Price not confirmedTechnicalAdd-on

nanoMuse

Automation & AI Helpers
#32

A free personal AI assistant with its own name and look. It runs on your phone and computer, remembers you, and asks before doing anything it can't undo.

FreeTechnicalAdd-on

Nemotron-Labs-Audex

Music & Voice
#33

An NVIDIA research AI that understands sound and text together.

FreeTechnicalAdd-on, Web

yovoice

Music & Voice
#34

A free studio for Mac and Windows that makes voiceovers, copies voices and writes songs, all offline with no monthly fees.

FreeTechnicalMac / PC app, Add-on

movo

Automation & AI Helpers
#35

Turns the DeepSeek Harness tool into a company-wide AI platform with research, writing and admin controls. An IT project.

FreeTechnicalAdd-on

showtime

Video
#36

Describe a video in one sentence and your AI coding tool directs it while your computer renders it. No uploads.

FreeTechnicalAdd-on

Paradee

Music & Voice
#37

A tiny text-to-speech voice AI, small enough to run almost anywhere. For app builders.

FreeTechnicalAdd-on, Web

Qwen-Image-2.1-Turbo

Images & Design
#38

Free online demo that makes and edits images fast with Qwen-Image-2.1 Turbo.

FreeTechnicalAdd-on, Web

LTX-2.5 22B Alpha Gen · Video to Alpha Matte

Video
#39

Cuts the person or object out of every frame of a video, like a green screen without the green screen.

FreeTechnicalAdd-on, Web

Resonant

Music & Voice
#40

A free music studio for Windows: generate songs, play instruments, mix and export, with AI help from Claude or Codex.

FreeTechnicalMac / PC app, Add-on

Use all Codex Plugins inside Pi

Build Websites & Apps
#41

Lets the Pi coding helper use OpenAI Codex's add-ons.

Price not confirmedTechnicalAdd-on

RL Environments on Hugging Face

For Developers
#42

Practice worlds where researchers train AI agents. Technical.

FreeTechnicalAdd-on, Web

Nagare

Automation & AI Helpers
#43

A plain to-do list app for iPhone and Mac that your AI assistant can add tasks to.

Price not confirmedBeginner-friendlyMac / PC app, iPhone & iPad

skills

Music & Voice
#44

Add-ons that let AI assistants use Sonilo's licensed music and sound effects in videos.

FreeTechnicalAdd-on

mcp

Automation & AI Helpers
#45

Lets AI assistants look up AI models and prices on RunAPI and start image or video jobs there.

FreeTechnicalAdd-on

Milepost

Automation & AI Helpers
#46

A driving journal app for iPhone that your AI assistant can read.

Price not confirmedBeginner-friendlyiPhone & iPad, Add-on

flstudio-mcp

Music & Voice
#47

Lets Claude work inside FL Studio, the music app, to mix, EQ and compose with you. For producers.

FreeTechnicalAdd-on

T3-Video 4K

Video
#48

Free online demo that makes sharp 4K videos from text.

FreeTechnicalAdd-on, Web

Cube Forms

Automation & AI Helpers
#49

Online forms that AI assistants can fill in for people.

Price not confirmedSome setupWeb

PostNitro for Agents

Marketing & Sales
#50

Your AI assistant can design and post social media posts for you.

Price not confirmedBeginner-friendly

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