AI · alternatives · 2026
24 alternatives to buttercup.sh
Em dashes welcome — learn how to build AI agents
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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Build AI agents that respond with UI instead of text
Feb 2026 · thesys.dev · its alternatives →
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Let's Build AI▲173Hi, I built letsbuild.ai over the weekend. This is a link site dedicated to AI and can be edited via Github. There is well over 50 links already as a start. If you got interesting AI related links/ categories, would welcome any PR.
2024 · letsbuild.ai · its alternatives →
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You can now vibe code agentic AI apps
Jan 2026 · blink.new · its alternatives →
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Agent Arena▲348Creator here. I built Agent Arena to answer a question that kept bugging me: when AI agents browse the web autonomously, how easily can they be manipulated by hidden instructions? How it works: 1. Send your AI agent to ref.jock.pl/modern-web (looks like a harmless web dev cheat sheet) 2. Ask it to summarize the page 3. Paste its response into the scorecard at wiz.jock.pl/experiments/agent-arena/ The page is loaded with 10 hidden prompt injection attacks -- HTML comments, white-on-white text, zero-width Unicode, data attributes, etc. Most agents fall for at least a few.…
Jun 2026 · arena42.ai · its alternatives →
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Build your own AI Agent for machines!
2025 · share.streamlit.io · its alternatives →
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Uncursor▲127Build apps and websites with AI. On iOS, Android, & the web
2025 · uncursor.com · its alternatives →
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Build AI agents you can see, control and scale
Feb 2026 · make.com · its alternatives →
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AI Agents▲123In 10 secs, build a squad of ChatGPT assistants to help you
2023 · dailybot.com · its alternatives →
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Sidegent▲90Learn to build AI agents by actually building them
Jun 2026 · sidegent.com · its alternatives →
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Hey HN! My name is Christian, and I’m the co-founder of https://frigade.ai. We’ve built an AI agent that automatically learns how to use any web-based product, and in turn guides users directly in the UI, automatically generates documentation, and even takes actions on a user’s behalf. Think of it as Clippy from the old MS Office. But on steroids. And actually helpful. You can see the agent and tool-calling SDK in action here: https://www.youtube.com/watch?v=UPe0t3A1Vpg How is this different from other AI customer support products? Most AI "copilots" are really just…
2025 · frigade.ai · its alternatives →
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We build runtime security for AI agents. The playground started as an internal tool that we used to test our own guardrails. But we kept finding the same types of vulnerabilities because we think about attacks a certain way. At some point you need people who don't think like you. So we open-sourced it. Each challenge is a live agent with real tools and a published system prompt. Whenever a challenge is over, the full winning conversation transcript and guardrail logs get documented publicly. Building the general-purpose agent itself was probably the most fun part. Getting it to reliably use…
Mar 2026 · github.com · its alternatives →
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Go beyond conversations and build AI agents that convert
2025 · talktoagent.com · its alternatives →
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A free beginners course on how to build webs apps, using AI.
2025 · its alternatives →
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Hi HN, I built Bot The Builder to solve a recurring problem I kept facing while building chatbots for clients: every time, I had to rebuild the same RAG stack, embed the same knowledge base, and deploy from scratch—even for small use cases. So I created a tool that lets you build and deploy AI agents from your own data (PDFs, docs, URLs, text) in under 60 seconds — no code required. You can embed the agent in any website or access it via API. ### Why I built it: - Most “AI chatbot builders” are either locked down or require complex LangChain pipelines. - I needed something fast, modular, and…
Nov 2025 · botthebuilder.net · its alternatives →
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Vibe-code custom-ready AI agents just by chatting
Nov 2025 · laburen.com · its alternatives →
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Build autonomous AI agents with Next.js & Vercel
2025 · aiagents.ausbizconsulting.com.au · its alternatives →
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Hey HN, I’m Chris, a solo dev in Melbourne AU. For the past month I've been spending my after work hours building AgentVisa. I'm both excited (and admittedly nervous) to be sharing it with you all today. I've been spending a lot of time thinking about the future of AI agents and the more I experimented, the more I realized I was building on a fragile foundation. How do we build trust into these systems? How do we know what our agents are doing, and who gave them permission? My long-term vision is to give developers an "Agent Atlas" - a clear map of their agentic workforce, showing where…
2025 · agentvisa.dev · its alternatives →
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Build AI agents from intent, not flowcharts
Mar 2026 · studio.aixplain.com · its alternatives →
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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 →