SpecialistProvides superior reasoning and artifact generation for coding tasks, but lacks a dedicated native desktop development command center.
#1Google Antigravity records 16,054,109 monthly visits with +8.1% month-over-month growth and Freemium pricing. Sendmux records 37 monthly visits with -98.3% growth and Free pricing.

Give every AI agent a real inbox and one API to use it
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | antigravity.google | sendmux.ai |
| Pricing Model | Freemium | Free |
| Monthly Visits | 16.05M (16,054,109) | 37 (37) |
| MoM Traffic Delta |
| +1.21M (+8.1%) |
| -2.2K (-98.3%) |
| Primary Market & Share | 🇮🇳 India (21.4%) | 🇺🇸 United States (100%) |
|---|
| Direct Visits / mo | 4.38M | 12 |
|---|
| User Rating | 4.6 | 4.2 |
|---|
| Supported Platforms | Website | Website |
|---|
Google's agent-first development platform for building and shipping software with AI agents
A desktop app, a full agentic IDE, a terminal-first CLI, editor extensions, and an SDK let you run Antigravity agents wherever you already work.
Group conversations into Projects and run several local agents at the same time, across multiple workspaces, rather than one at a time.
Agents produce designed artifacts such as plans and comprehensive verification tests so output can be reviewed, not just accepted.
Runs on Google's Gemini model line, including releases such as Gemini 4 Carbon, Gemini 4 Argon, and Gemini 3.8 Flash.

Give every AI agent a real inbox and one API to use it
Provision mailboxes on verified domains or a shared myagent.mx address, with clean JSON output that strips signatures and quotes.
Send over HTTP or SMTP using the same mailbox credential as a Bearer token and SMTP password, with Idempotency-Key retries and attachment support.
Bind keys to providers, delivery groups, weights, and quota windows so traffic stays inside the boundaries you set.
Signed webhooks for delivery and receipt events, an SSE stream for live mailbox clients, and typed change polling for resync.
SpecialistProvides superior reasoning and artifact generation for coding tasks, but lacks a dedicated native desktop development command center.
#1
Offers a more mature polished AI-native coding experience, but lacks Google's specific native multi-agent command center ecosystem.

Enables rapid full-stack app building and deployment entirely in the cloud, but offers less granular local agentic control.
Deeply reads entire codebases to execute complex multi-file tasks, though integrated as an IDE plugin rather than standalone suite.
Delivers robust spec-driven engineering and autonomous verification workflows, though configured differently than Google's developer platform.
Cognition's autonomous software engineer that ships real pull requests
Free / Open-sourceOpen-source development environment running multiple CLI coding agents in isolated git worktrees, but requires manual setup.

Provides a seamless AI-driven IDE workflow with strong multi-file editing, but offers less specialized multi-agent orchestration control.

SpecialistAI-powered terminal and agentic software factory for development teams

Collaborative inbox and email management for teams

Email an AI assistant and let it run your schedules, inbox and CRM

Agent orchestration platform for your whole software development lifecycle
SpecialistProvides superior reasoning and artifact generation for coding tasks, but lacks a dedicated native desktop development command center.
Offers a more mature polished AI-native coding experience, but lacks Google's specific native multi-agent command center ecosystem.
Enables rapid full-stack app building and deployment entirely in the cloud, but offers less granular local agentic control.
Deeply reads entire codebases to execute complex multi-file tasks, though integrated as an IDE plugin rather than standalone suite.
Delivers robust spec-driven engineering and autonomous verification workflows, though configured differently than Google's developer platform.
Free / Open-sourceOpen-source development environment running multiple CLI coding agents in isolated git worktrees, but requires manual setup.
Provides a seamless AI-driven IDE workflow with strong multi-file editing, but offers less specialized multi-agent orchestration control.
SpecialistAI-powered terminal and agentic software factory for development teams
Collaborative inbox and email management for teams
Agent orchestration platform for your whole software development lifecycle