
A dedicated AI-native code editor offering superior multi-file code generation, though it lacks terminal-native lightness.
Pi Coding Agent records 1,929,244 monthly visits with +4% month-over-month growth and Free pricing. Sheldon AI records 0 monthly visits with 0% growth and Freemium pricing.

A Chrome AI assistant that cuts your browsing time by 40%
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | pi.dev | heysheldon.com |
| Pricing Model | Free | Freemium |
| Monthly Visits | 1.93M (1,929,244) | 0 (0) |
| MoM Traffic Delta | +74.89K (+4%) |
| 0 (0%) |
| Primary Market & Share | 🇨🇳 China (33.4%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 902.21K | 0 |
|---|
| User Rating | 4.6 | 4.3 |
|---|
| Supported Platforms | Website | Website |
|---|
A minimal, extensible terminal coding agent you can reshape
Build commands, tools, keyboard shortcuts, overlays, sub-agents or permission gates as TypeScript extensions, or install them as packages from npm and git.
AGENTS.md instructions, per-project SYSTEM.md, on-demand skills, prompt templates and customizable compaction keep the context window under your control.
Connect 15+ providers from Anthropic and OpenAI to Bedrock, Groq, OpenRouter and local Ollama, then switch models mid-session.
Interactive TUI, print/JSON for scripting, an RPC protocol for non-Node hosts, and an SDK for embedding the agent.

A Chrome AI assistant that cuts your browsing time by 40%
Summon the assistant from any browser tab or supported site such as Gmail, Google Sheets, LinkedIn, or Quora.
Describe the tone and context you want and Sheldon generates a polished professional email reply you can edit and send.
Explain in plain language what a spreadsheet should calculate, and Sheldon returns a working Excel formula.
Produces LinkedIn posts, Twitter threads, website copy, video scripts, and keyword suggestions for campaigns.

A dedicated AI-native code editor offering superior multi-file code generation, though it lacks terminal-native lightness.

Describe your idea and Replit builds a working app in minutes
#2
Free / Open-sourceThe industry-standard source code editor with flexible plugin support, requiring extensions for advanced agentic coding.

SpecialistAn agentic coding platform that ships real software

All-in-one AI assistant across web, browser, desktop and mobile

Your AI agent for the browser: chat, automate and create from one sidebar
SpecialistAn autonomous software engineer that handles end-to-end repository tasks, but operates as a cloud service rather than locally.

A terminal-first AI coding agent optimized for open-weight models, offering a similar command-line developer experience.
One-click AI assistant for browsing, writing and research
An AI-powered integrated development environment providing comprehensive project understanding, but operating as a desktop app.
SpecialistOne browser agent that combines every major AI model with web automation

Bring ChatGPT, Claude and Gemini into Google Docs, Sheets, Slides and Gmail
A dedicated AI-native code editor offering superior multi-file code generation, though it lacks terminal-native lightness.
Free / Open-sourceThe industry-standard source code editor with flexible plugin support, requiring extensions for advanced agentic coding.
All-in-one AI assistant across web, browser, desktop and mobile
Your AI agent for the browser: chat, automate and create from one sidebar
SpecialistAn autonomous software engineer that handles end-to-end repository tasks, but operates as a cloud service rather than locally.
A terminal-first AI coding agent optimized for open-weight models, offering a similar command-line developer experience.
One-click AI assistant for browsing, writing and research
An AI-powered integrated development environment providing comprehensive project understanding, but operating as a desktop app.
Bring ChatGPT, Claude and Gemini into Google Docs, Sheets, Slides and Gmail