AI · alternatives · 2026

ai-sdk-cpp is a C++20 SDK that provides a unified interface for calling OpenAI's GPT-4o and Anthropic's Claude 3.5 models. It supports streaming, multi-turn conversations, and tool calling, allowing models to invoke… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Claude Code and Claude 3.7 Sonnet ▲875

   Claude Opus 4.7 is Anthropic's most capable generally available model, released April 16, 2026. It outperforms Opus 4.6, GPT-5.4, and Gemini 3.1 Pro on key benchmarks including agentic coding, multidisciplinary reasoning, scaled tool use, and agentic computer use. It is benchmarked below Claude Mythos Preview — which remains restricted to Project Glasswing partners. https://vucense.com/ai-intelligence/ai-tools/claude-opus-4-7...

   2025 · anthropic.com · its alternatives →

2. 2
   Port of OpenAI's Whisper model in C/C++▲399

   Hi HN, OpenAI recently released a model for automatic speech recognition called Whisper [0]. I decided to reimplement the inference of the model from scratch using C/C++. To achieve this I implemented a minimalistic tensor library in C and ported the high-level architecture of the model in C++. The entire code is less than 8000 lines of code and is contained in just 2 source files without any third-party dependencies. The Github project is here: https://github.com/ggerganov/whisper.cpp With this implementation I can very easily build and run the model - “make…

   2022 · github.com · its alternatives →

3. 3
   Claude Code Routines▲595

   Put Claude Code tasks on autopilot with smart routines

   Apr 2026 · anthropic.com · its alternatives →

4. 4
   1Code▲569

   Just to clarify the background a bit. This project wasn’t planned as a big standalone release at first. On January 16, Ollama added support for an Anthropic-compatible API, and I was curious how far this could be pushed in practice. I decided to try plugging local Ollama models directly into a Claude Code-style workflow and see if it would actually work end to end. Here is the release note from Ollama that made this possible: https://ollama.com/blog/claude Technically, what I do is pretty straightforward: - Detect which local models are available in Ollama. - When…

   Jan 2026 · github.com · its alternatives →

5. 5
   AI-SDK-Cpp – Unified C++ SDK for OpenAI, Anthropic, and More▲5

   The AI Toolkit for Modern C++. From the engineers at ClickHouse, ai-sdk-cpp is a free, open‑source library for building AI‑powered applications and agents. - ClickHouse/ai-sdk-cpp

   2025 · github.com · its alternatives →

6. 6
   RightNow CLI▲121

   I locked in for 18 hours and built Claude Code for CUDA. It is completely open source! It writes CUDA kernels, debugs memory issues, and optimizes for your specific GPU. It is a fully agentic AI with tool calling built specifically for the CUDA toolkit This is the CLI version of RightNow AI code editor, our GPU-native code editor with a built-in emulator, visual profiling, and remote GPU access. The CLI is open source, lightweight, and fast. It is designed for anyone who wants AI help with CUDA without setup I used Python because it is the most common language, so anyone can build on top of…

   2025 · github.com · its alternatives →

7. 7AP
   A plain-text cognitive architecture for Claude Code▲157

   One memory, not one per tool. Cog gives AI agents a shared, structured memory layer using plain-text files — portable across Claude Code, Codex, Cursor, Gemini CLI, Windsurf, Copilot, and more.

   Mar 2026 · lab.puga.com.br · its alternatives →

8. 8
   Claude Artifacts but creating real web apps▲189

   Hey Hacker News! Launching gptengineer.app into beta today. It's like Claude Artifacts, but: - you can edit the code in your fav IDE (two-way github sync) - installs npm packages - automatically picks up build and runtime errors and fixes them - very fast, built with rust The full stack capabilities are built on supabase (prefer to not have to handle auth + user data at this point so this is owned by the user) The seed for this project was an open source experiment, posted about that previously here: https://news.ycombinator.com/item?id=36422730 Would love feedback if you give…

   2024 · gptengineer.app · its alternatives →

9. 9
   Codemcp – Claude Code for Claude Pro subscribers – ditch API bills▲172

   Hi all! I normally work on the PyTorch project but I've been on baby leave for the past month, so I've been playing around with AI as a user rather than a framework implementor. I really liked the agent experience with Claude Code, but I couldn't really justify spending so many dollars on API costs for random side projects. I already pay for a Claude Pro subscription though, and it turns out you can simulate many of Claude Code's features with an MCP. If you have a Pro subscription, check this out! I think it really captures the Claude Code experience quite well, without forcing you to pay…

   2025 · github.com · its alternatives →

10. 10
    PromptForge▲128

    One click AI prompts inside ChatGPT, Bard & Claude

    2023 · promptden.com · its alternatives →

11. 11
    GitHub Agent HQ▲192

    Run Claude, Codex & Copilot directly in GitHub & VS Code

    Feb 2026 · github.blog · its alternatives →

12. 12
    Open-source CLI coding framework using Claude▲84

    AI powered cli coding agent that monitors your dev/test server and fixes errors and adds features - vysakh0/dravid

    2024 · github.com · its alternatives →

13. 13
    Fork of Claude-code working with local and other LLM providers▲177

    2025 · github.com · its alternatives →

14. 14
    OpenAPISearch – Make APIs Accessible for AI Codegen▲10

    Hey Hackernews! In the last few days I've dug up some work I was working on last year but never was able to ship due to perfectionism. But with my new attitude, here it is: I also immediately got it in MCP-form so you can use it in Claude and Cursor as well. Enable Claude / Cursor to know ANY API!! Video and links here: https://x.com/janwilmake/status/1903497808134496583 P.S. Expect bugs. Building in public. I've tested it with a few apis so far, and so far it worked really well as MCP every time. P.P.S. It's all Open source!…

    2025 · openapisearch.com · its alternatives →

15. 15
    Windows port of OpenAI's Whisper automatic speech recognition model▲43

    This project is a Windows port of the whisper.cpp implementation: https://github.com/ggerganov/whisper.cpp Which in turn is a C++ port of OpenAI's Whisper automatic speech recognition (ASR) model: https://github.com/openai/whisper The implementation has no dependencies, usually much faster than realtime, and should hopefully work on most Windows computers in the world.

    2023 · github.com · its alternatives →

16. 16
    Sx – an open-source package manager for AI skills, MCPs, and commands▲50

    Claude Code is amazing for individuals but terrible for teams. I spent the last six months building my perfect mix of MCP servers, subagents, commands and skills. Claude Code writes 100% of the code now, but sharing this with my team? Painful. 1. Blog posts and workshops don't work (and don't scale) 2. Committing tools to N repos means N PRs. A tool changes? N more PRs. 3. Same tools, different files or folders for each AI assistant; not everyone uses Claude Code It is like 1999 all over again; FTPing files up to prod and versioning with ".bak" suffixes. So I built sx. It is your team's…

    May 2026 · github.com · its alternatives →

17. 17
    Output.ai - OSS framework we extracted from 500+ production AI agents▲40

    Open-source TypeScript framework for AI dev: prompts, evals, tracing, cost tracking, security, and durable execution. Built for Claude Code.

    Apr 2026 · output.ai · its alternatives →

18. 18
    Retain – A unified knowledge base for all your AI coding conversations▲45

    Hey HN! I built Retain as the evolution of claude-reflect (github.com/BayramAnnakov/claude-reflect). The original problem: I use Claude Code/Codex daily for coding, plus claude.ai and ChatGPT occasionally. Every conversation contains decisions, corrections, and patterns I forget existed weeks later. I kept re-explaining the same preferences. claude-reflect was a CLI tool that extracted learnings from Claude Code sessions. Retain takes this further with a native macOS app that: - Aggregates conversations from Claude Code, claude.ai, ChatGPT, and Codex CLI - Instant full-text…

    Jan 2026 · github.com · its alternatives →

19. 19
    Open-Source Infra for a Single MCP Server to Search and Use 600 Tools▲41

    ACI.dev is the open source tool-calling platform that hooks up 600+ tools into any agentic IDE or custom AI agent through direct function calling or a unified MCP server. The birthplace of VibeOps. - aipotheosis-labs/aci

    2025 · github.com · its alternatives →

20. 20
    Companion▲20

    AI that actually controls your Windows/Mac desktop - clicks, types, automates workflows across any application. Native OS integration, not cloud APIs. Built this because I was tired of AI that could only chat. Free tier (Gemini) + paid tier (Claude) for reliable automation. The AI can automate complex workflows, manage files/emails, control browsers and native apps. Just launched 2 weeks ago. What workflows would you want automated?

    2025 · aioscompanion.com · its alternatives →

21. 21
    I built a Claude AI chat interface to bypass platform limits▲39

    I got frustrated with Claude's official platform limitations - conversations disappearing, no customization options, and clunky file handling. So I built my own interface over a weekend! GitHub: https://github.com/chihebnabil/claude-ui What it does: - Saves all conversations locally (SQLite + Drizzle ORM) - Lets you customize Claude's personality per chat - Handles file attachments properly + caching input tokens - Dark/light mode - No conversation limits - Markdown & code syntax highlighting Tech stack is pretty simple: - Nuxt 3 for the frontend - Anthropic's SDK…

    2024 · github.com · its alternatives →

22. 22
    An AI-first visual editor using GPT-4o's GPT-image-1 model▲23

    Hey HN! We’ve been experimenting with integrating multimodal models directly into creative workflows, and ended up building an AI-first image editor using OpenAI’s new `gpt-image-1` (from GPT-4o) inside our SDK. Instead of prompting in ChatGPT and pasting outputs into a design tool, this lets you generate, edit, and remix images all in one canvas. This allows for really interesting new workflows, like quickly mixing multiple images, or creating visual prompts by using annotations and reference on the canvas. Some key details: - Built with our plugin system in CE.SDK (CreativeEditor SDK) -…

    2025 · img.ly · its alternatives →

23. 23
    Claude Code Proxy▲14

    Turn any OpenAI-compatible API into a Claude Code backend

    2025 · github.com · its alternatives →

24. 24GC
    Give Claude Code control of your browser (open-source)▲10

    As I started to use Claude Code to do more random tasks I realized I could basically build any CLI tool and it would use it. So I built one that controls the browser and open-sourced it. It should work with Codex or any other CLI-based agent! I have a long term idea where the models are all local and then the tool is privacy preserving because it's easy to remove PII from text, but I'd definitely not recommend using this for anything important just yet. You'll need a Gemini key until I (or someone else) figure out how to distill a local version out of that part of the pipeline. Github link:…

    2025 · cli-agents.click · 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 →