CalcForge records 31,360 monthly visits with -4.8% month-over-month growth and Free, Paid pricing. Google Antigravity records 16,054,109 monthly visits with +8.1% growth and Freemium pricing.
Open-source engineering calculators for civil and structural design
Google's agent-first development platform for building and shipping software with AI agents
| Dimension / Metric | ||
|---|---|---|
| Official Domain | calcforge.com | antigravity.google |
| Pricing Model | Free, Paid | Freemium |
| Monthly Visits | 31.36K (31,360) | 16.05M (16,054,109) |
| MoM Traffic Delta | -1.56K (-4.8%) | +1.21M (+8.1%) |
| Primary Market & Share | 🇮🇳 India (16.1%) | 🇮🇳 India (21.4%) |
| Direct Visits / mo | 12.46K | 4.38M |
| User Rating | 4.3 | 4.6 |
| Supported Platforms | Website | Website |
Open-source engineering calculators for civil and structural design
Structural, geotechnical, tunnelling and contractor tools available free and open source on GitHub.
Searchable construction datasets covering high-rise buildings, bridges, tunnels, dams and housing.
Registered users get calculation workings, bending/shear/deflection diagrams and PDF export.
Four project-based pathways in Python, AI for construction, AI governance and building AI agents.
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.
SpecialistProvides superior reasoning and artifact generation for coding tasks, but lacks a dedicated native desktop development command center.
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.
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.
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.
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.
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.
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.
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
SpecialistAI-powered terminal and agentic software factory for development teams
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Agent orchestration platform for your whole software development lifecycle
Agent orchestration platform for your whole software development lifecycle
Free / Open-sourceFree practical deep learning courses, research and open-source libraries
