Freemium AI Coding Tools
Freemium AI coding tools, editors, agents, and MCP servers — 21 curated.
AgentOps
Observability for AI agents — session replay, cost and latency tracking, and debugging for multi-step runs.
Amp
Sourcegraph's agentic coding tool — a CLI and editor extensions tuned for frontier-model coding.
Bolt
StackBlitz's in-browser AI agent that builds, runs, and deploys full-stack web apps in a WebContainer.
Braintrust
An end-to-end platform for evaluating, iterating on, and observing LLM apps, with a prompt playground.
Coderabbit
An AI code reviewer that posts line-by-line feedback and summaries on every pull request.
Cohere Rerank
A hosted reranking API that reorders retrieved passages by true relevance to a query.
Deepgram
A voice-AI platform with fast, accurate speech-to-text (Nova) and low-latency text-to-speech (Aura), plus a bundled Voice Agent API.
Devin
Cognition's autonomous AI software engineer that works in its own cloud workspace with an editor, terminal, and browser.
ElevenLabs
A voice-AI platform for high-quality text-to-speech, voice cloning, dubbing, and real-time conversational agents, via API.
LangSmith
LangChain's platform for tracing, evaluating, and monitoring LLM apps — framework-agnostic.
LM Studio
A desktop app for discovering, downloading, and running open-weight LLMs locally with a GUI and a local OpenAI-compatible server.
Lovable
An AI app builder that turns natural-language prompts into shippable full-stack web apps.
OpenRouter
A hosted unified API to hundreds of models from many providers, with one key, one bill, and automatic fallbacks.
Pinecone
A fully managed, serverless vector database for similarity search and RAG — no nodes to run, indexes to tune, or infrastructure to operate.
Portkey
An AI gateway and LLMOps platform: route to many LLMs through one API with caching, retries, fallbacks, load balancing, guardrails, and full observability.
Replit Agent
Replit's AI agent that builds, runs, and deploys full-stack apps from a prompt inside the Replit cloud IDE.
Smithery
A registry and hosting platform for Model Context Protocol servers — discover, deploy, and connect MCP servers from one place.
V0
Vercel's generative UI builder that turns prompts into production-ready React, Next.js, and shadcn/ui apps.
Voyage AI
Embedding and reranking models tuned for retrieval, now part of MongoDB.
Devin Desktop (formerly Windsurf)
An agentic IDE — formerly Windsurf, now Devin Desktop from Cognition AI — with flows that take multi-step actions across your codebase.