AI · alternatives · 2026

24 alternatives to SingleAPI

Convert the internet into your own API using GPT

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. SingleAPI launched in 2023; newer entries below may have overtaken it.

1. 1
   SingleAPI – Convert the Internet into your own API▲15

   Hi! I created a universal data API that uses headless browsers and GPT to extract any data from the web in JSON format. I started this project because I needed some API to do data enrichment to get company data (headcount, investment rounds, etc.). Once I did the first version, I quickly realized that there can be many use cases for such a tool: data enrichment, web scraping, data validation, etc. Thanks!

   2023 · singleapi.co · its alternatives →

2. 2
   WrapAPI▲291

   Build an API on top of any website

   2016 · wrapapi.com · its alternatives →

3. 3
   GPT Image API▲487

   Bring GPT-4o quality images to your apps

   2025 · developers.openai.com · its alternatives →

4. 4
   Autogpt by SamurAI▲678

   AutoGPT in the browser

   2023 · its alternatives →

5. 5
   Anything API▲656

   Hey HN! We built Notte, a browser infrastructure and agents platform. Many of our users automate UI workflows or extract data from sites that don’t have APIs. In practice, we noticed that once an agent understands how a site works, parts of the task can often run without a browser by interacting with the same network requests the site uses. So we built Anything API: describe a browser task, and our agent explores the site, builds a function, tests it against your description, and deploys a callable REST endpoint. No infra to manage. How the build works: - Describe the task (best results come…

   Mar 2026 · anything.notte.cc · its alternatives →

6. 6
   GPT Computer Assistant▲655

   Create intelligence for your products

   2024 · gca.dev · its alternatives →

7. 7
   Turn any website into an API (for those who miss Kimono)free tier, from $19/mo▲332

   Web scraping made simple — extract data with our free Chrome extension and powerful cloud platform. Turn websites into structured data at scale, via dashboard or API.

   2019 · simplescraper.io · its alternatives →

8. 8
   GPT-4.1 in the API▲375

   Announcing GPT-4.1, GPT-4.1 mini, & GPT-4.1 nano in the API

   2025 · openai.com · its alternatives →

9. 9
   GPT WebApp Generator for React & Node.js▲272

   Let AI create a full-stack web app based on your description

   2023 · usemage.ai · its alternatives →

10. 10
    JSON Api▲175

    Hosted API's to develop your app for free 🙌

    2020 · jsonapi.co · its alternatives →

11. 11
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

12. 12
    PDF GPT▲141

    Host your own PDF GPT app using your Open AI API key

    2023 · therealtjerkienator.gumroad.com · its alternatives →

13. 13LF
    Link.fish – API to extract data from websites as JSON▲201

    2017 · link.fish · its alternatives →

14. 14
    2.0 Helper-AI▲94

    Just type "Help" and instant access GPT-4 + source code

    2023 · sites.google.com · its alternatives →

15. 15
    Typist AI▲146

    Use GPT-4 on every textbox on the internet

    2023 · its alternatives →

16. 16WV
    WrapAPI v2 – Build APIs, scrapers, bots on any website▲166

    Build an API on top of any existing website or find an API for a site that you need

    2017 · wrapapi.com · its alternatives →

17. 17
    GPT-JSON – Structured and typehinted GPT responses in Python▲174

    Hey HN, I've been using GPT a lot lately in some side projects around data generation and benchmarking. During the course of prompt tuning I ended up with a pretty complicated request: the value that I was looking for, an explanation, a criticism, etc. JSON was the most natural output format for this but results would often be broken, have wrong types, or contain missing fields. There's been some positive movement in this space, like with jsonformer (https://github.com/1rgs/jsonformer) the other day. But nothing that was plug and play with GPT. This library consolidates…

    2023 · github.com · its alternatives →

18. 18
    Outboundly▲94

    GPT-4 powered exention for prospect research & cold outreach

    2023 · its alternatives →

19. 19
    Webapi.ai 3.0▲70

    The most advanced GPT3-based chatbot builder

    2023 · webapi.ai · its alternatives →

20. 20
    SearchApi▲103

    Real-time search engines results API

    2024 · searchapi.io · its alternatives →

21. 21TA
    Turn any website into an API HackMIT 2013▲36

    Select anything on a website. If it is part of a table or a list, you get a URL which you can GET for a JSON representation of that list or table. Basically we are making an API for every website whether they like it or not.

    2013 · ec2-54-211-79-18.compute-1.amazonaws.com · its alternatives →

22. 22
    FestApi▲74

    Visualize and embed APIs with ease

    2020 · its alternatives →

23. 23
    GPT 3.5 Turbo Playground▲98

    A micro app to try the new ChatGPT API

    2023 · its alternatives →

24. 24
    Build GPT-powered apps with just GPT4 prompting▲22

    Hi everyone, We built a quick experiment this weekend that allows you to use GPT4 to quickly generate shareable web apps that use the ChatGPT API. Here’s a video of me building an app similar to https://whatdoesthiscodedo.com/: https://www.youtube.com/watch?v=VpvGd21V0u0 "What does this code do?" went to #1 on Hacker News a couple of months ago. The app takes a piece of code, asks GPT4 to analyze it and returns a simple, English description of the code. An app like this is super simple to build with MetaGPT. What other kinds of things can you build with this? *…

    2023 · picoapps.xyz · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →