Alternatives to Standards Sdk

Open-source spec framework that keeps AI coding agents building the right thing, spec-first.

Tessera AI is a planned open-source, evidence-first AI coding agent for JetBrains IDEs, but the product is not downloadable and its domain is listed for sale.

Open-source dev platform uniting AI, NoCode, Code, and reusable MicroApps.

Open-source AI coding agent for VS Code and JetBrains — now free to fork after the Cursor acquisition.

Sourcegraph Cody is an AI coding assistant that grounds chat, completions, and agent workflows in your entire multi-repo codebase.

Open-source autonomous AI coding agent that plans, executes, and deploys tasks inside VS Code and JetBrains IDEs.

Crush is a free, open-source agentic coding assistant that runs in your terminal and wires any LLM into your CLI workflow.

Open-source coding agent that edits code and runs terminal commands across IDE, CLI, and desktop.

Open Design turns your coding agent into a local-first AI design engine for prototypes, slides, and HTML video

Pi Coding Agent is a free, open-source terminal coding agent harness you adapt to your own workflow.

Open-source agent skills that turn text or image prompts into CAD models, G-code, and robot files.

Free, open-source AI code assistant plugin for JetBrains IDEs with spec-driven development

Kilo is an open-source AI coding agent with 500+ models and zero inference markup across IDE, CLI, and cloud.

Open-source AI coding agent for terminal, IDE, and desktop — bring any model, including 75+ LLM providers.

Open-source AI coding agent orchestrator with per-task LLM routing across OpenAI, Anthropic, Gemini, and Ollama.

Open-source screenshot to code converter turns mockups, Figma designs, and screen recordings into HTML, React, and Vue.

Ponytail is an open-source ruleset that makes AI coding agents write minimal, pragmatic code.

Free open-source VSCode extension for one-click AI code comments, conversions, and UI-to-code

Free open-source terminal client for SSH, SFTP, RDP, VNC, serial, and more with built-in AI.

Local-first Agent OS that runs official Claude Code, Codex, and OpenCode CLIs on your own machine with a shared Workbench.

Open-source self-hosted backend for AI coding agents to ship full-stack apps from chat

Open-source TypeScript platform for durable AI agents, background jobs, retries, and queues.

Open-weight agentic coding models — Laguna XS 2.1 and Laguna S 2.1 — built for secure on-prem and air-gapped enterprise AI.

Apidog binds API design, debugging, mocking, testing, and docs to one OpenAPI definition — with MCP and agent debugging built in.

Durable execution for background jobs, workflows, and AI agents — written in your own code

Replit Agent turns plain-English prompts into hosted full-stack apps — prompt-to-app building without coding.

ReadMe is an API documentation platform that turns OpenAPI specs into interactive references, syncs docs with GitHub and GitLab, and uses AI to lint, review,

Tempo Labs is an AI IDE for React teams: prompt components into existence, then refine them on a visual canvas both designers and engineers share.

GitLab Duo is GitLab's agentic AI layer, adding specialized AI agents, code review, and policy-governed automation directly into DevSecOps workflows.

Terminal-based AI pair programming with Git-native workflows and codebase-wide awareness