AI · alternatives · 2026

24 alternatives to ServerlessAI – Build, scale, and monetize AI apps without back end

Hello HN, I’ve always loved building frontend-only apps—those you can prototype over a weekend, host for free on GitHub Pages, and scale to millions of users. Unfortunately, AI-enabled apps complicate things, as exposing your OpenAI key to the world is obviously a no-go. This also means mobile developers often have to run their own servers. That’s why I built ServerlessAI, an API gateway that lets you securely call multiple AI providers directly from client side using OpenAI-compatible APIs. You can authenticate users through any identity provider, like Google or Apple, and set per-user…

ServerlessAI is an API gateway that enables developers to build AI-powered applications without requiring backend infrastructure. It securely routes requests to multiple AI providers directly from client-side code… 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. ServerlessAI – Build, scale, and monetize AI apps without back end launched in 2024; newer entries below may have overtaken it.

1. 1
   Fleak AI Workflows▲481

   Build serverless APIs in minutes

   2024 · fleak.ai · its alternatives →

2. 2
   NoCodeAPI▲552

   Build third-party application APIs with NoCode

   2020 · nocodeapi.com · its alternatives →

3. 3
   SimplAIfree tier, from $5/mo▲589

   Hey HN, I've been building SimplAI for the past several months — it's a platform for building, testing, and deploying LLM-powered agents and multi-step workflows. The problem I kept running into: spinning up an AI agent pipeline means stitching together prompt management, tool calling, memory, evals, and deployment — often from scratch every time. SimplAI tries to be the layer that handles all of that so you can focus on what your agent actually does. What it does: - Visual + code-first workflow builder for chaining LLM calls, tools, and APIs - Built-in prompt versioning and A/B testing…

   2025 · simplai.ai · its alternatives →

4. 4
   Serverless 1.37▲332

   Toolkit for building serverless applications

   2019 · serverless.com · its alternatives →

5. 5
   Sudo AI▲265

   Sudo — AI monetization infrastructure for developers 4 months ago, I kept running into the same problem building AI products: inference is expensive, subscriptions are blunt, and ads weren’t designed for generated content. So I started working on Sudo, an infrastructure layer that makes it easier to launch and monetize AI apps. ⸻ Key features (in beta now): • One API to route across top models (no vendor lock-in) • Real-time metering & billing (usage-based, subscriptions, or hybrid) • Optional AI-native ads — contextual, developer-defined, and personalized • Dashboard for tracking usage,…

   2025 · sudoapp.dev · its alternatives →

6. 6
   Netlify AI Gateway▲292

   Use AI models without managing keys or billing

   Dec 2025 · docs.netlify.com · its alternatives →

7. 7
   Serverless Cloud▲283

   Build full stack apps better and faster than everyone else

   2022 · serverless.com · its alternatives →

8. 8
   I built an OSS alternative to Azure OpenAI services▲200

   Hey HN, I am proud to show you guys that I have built an open source alternative to Azure OpenAI services. Azure OpenAI services was born out of companies needing enhanced security and access control for using different GPT models. I want to build an OSS version of Azure OpenAI services that people could self host in their own infrastructure. "How can I track LLM spend per API key?" "Can I create a development OpenAI API key with limited access for Bob?" "Can I see my LLM spend breakdown by models and endpoints?" "Can I create 100 OpenAI API keys that my students could use in a classroom…

   2023 · github.com · its alternatives →

9. 9
   CTO.ai 2.0▲204

   A smarter workflow for Kubernetes & Cloud Native apps

   2021 · cto.ai · its alternatives →

10. 10
    EnergeticAI▲142

    Use open-source AI in your Node.js apps, up to 67x faster

    2023 · energeticai.org · its alternatives →

11. 11
    Airbolt AI▲79

    Hi HN! We love the "backend-less" stack: Stripe for payments, Supabase for data, Clerk for auth. But the moment we add AI features, we're forced to spin up a backend to hide API keys, implement per-user token-based rate limits and graceful degradation, etc. So we built Airbolt. What it does: Drop in our SDK and start making OpenAI calls directly from your frontend. Your keys are AES-256-GCM encrypted on our servers, never exposed to the client. We provide token-based per-user rate limits and origin allow lists to address inference abuse. Short-lived JWTs and bring-your-own-auth are coming…

    2025 · airbolt.ai · its alternatives →

12. 12SO
    Serverless OAuth on a Github page▲37

    2013 · oauth-io.github.io · its alternatives →

13. 13
    8base – Ready-to-Rock GraphQL API and Serverless Back End▲84

    8base delivers an AI-first solution that simplifies your journey from idea to working software application. | Ask us how.

    2019 · 8base.com · its alternatives →

14. 14
    Gemini OpenAI API Proxy. Serverless▲39

    ✦ Gemini ➜ OpenAI API proxy. Serverless! Contribute to PublicAffairs/openai-gemini development by creating an account on GitHub.

    2024 · github.com · its alternatives →

15. 15
    OpenBerth▲84

    Deploy AI-generated apps to your own server with one command. Open source, sandboxed, automatic HTTPS. Built for non-engineers.

    Apr 2026 · openberth.io · its alternatives →

16. 16
    OneCLI – Vault for AI Agents in Rust▲161

    We built OneCLI because AI agents are being given raw API keys. And it's going about as well as you'd expect. We figured the answer isn't "don't give agents access," it's "give them access without giving them secrets." OneCLI is an open-source gateway that sits between your AI agents and the services they call. You store your real credentials once in OneCLI's encrypted vault, and give your agents placeholder keys. When an agent makes an HTTP call through the proxy, OneCLI matches the request by host/path, verifies the agent should have access, swaps the placeholder for the real…

    Mar 2026 · github.com · its alternatives →

17. 17
    I built a serverless data API builder – no storage, low latency▲68

    Hey HN, I'm Bo, cofounder of Fleak.ai. Over the past several months, our team has been hard at work developing Fleak, a data API backend builder, and we would love your feedback on what we've built so far. What Fleak Does: Fleak simplifies the process of building and deploying API backends. It features a no-code IDE UI that lets you create workflows by chaining together steps such as native SQL transformations, calling LLM models, AWS Lambda functions, and more. With a single click, you can deploy these workflows to a production endpoint (during test, we are able to handle 5000 QPS without…

    2024 · fleak.ai · its alternatives →

18. 18
    Axis One▲78

    I’ve been building a small hardware box that runs local LLMs like Mistral, Qwen and Llama, and exposes an OpenAI compatible API on your local network. There’s no cloud, no login system and no telemetry. I built it because a lot of small firms want ChatGPTbstyle tools but can’t use cloud AI for privacy or compliance reasons, and most don’t want to deal with GPU servers, drivers, Docker or model configs. The aim is to make local AI feel as simple as plugging in a router. Right now the box boots into a very simple web UI where you choose a model and start using it. The API follows the OpenAI…

    Nov 2025 · axis-one-psi.vercel.app · its alternatives →

19. 19
    Backendless▲99

    Build scalable apps at lightning speed, coding optional

    2023 · backendless.com · its alternatives →

20. 20
    Easy Serverless GraphQL APIs with Serverless Framework AppSync▲90

    2019 · github.com · its alternatives →

21. 21
    Architect 7.0 (Chupacabra)▲92

    The easiest way to ship serverless HTTP APIs

    2020 · arc.codes · its alternatives →

22. 22
    KickStarter for open source projects and LinkedIn for OSS contributors▲86

    AI You Own Owned Intelligence. Built for Enterprise. The open infrastructure, tools, and expertise to build AI your organization actually owns, not rents. T ...

    2019 · openteams.com · its alternatives →

23. 23
    Api2ai – create an API agent from any OpenAPI Spec▲23

    api2ai parses OpenAPI Spec to generate an agent that can make API calls. For context, I recently need to explore a handful of API suites and thought LLMs can help expedite this process. After some digging, I found OpenAPI Specs are perfect fit for function calling. Based on a text prompt, api2ai can select the right endpoint and properly parse request params and make api calls. It also handles authentication, currently it supports basic auth, api keys, and bearer token schemes. The tool has helped me explore and see APIs in action without a deep dive into the docs or using postman. It’s open…

    2023 · github.com · its alternatives →

24. 24
    Cloud Backend – a scalable database and API builder in the cloud▲50

    Create a serverless cloud backend with a database and API functions in few minutes! Zero maintenance required, instant provisioning, High availability & Scalability, Woldwide CDN with 113 POPs. 24/7 Professional support.

    2017 · cloudbackend.appdrag.com · 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 →