
SpecialistAn AI-powered desktop code editor offering deeper codebase control, though less instant than one-click web builders.
CalcForge records 31,360 monthly visits with -4.8% month-over-month growth and Free, Paid pricing. Lovable records 31,052,090 monthly visits with +3.8% growth and Freemium pricing.
Open-source engineering calculators for civil and structural design
| Dimension / Metric | ||
|---|---|---|
| Official Domain | calcforge.com | lovable.dev |
| Pricing Model | Free, Paid | Freemium |
| Monthly Visits | 31.36K (31,360) | 31.05M (31,052,090) |
| MoM Traffic Delta | -1.56K (-4.8%) |
| +1.15M (+3.8%) |
| Primary Market & Share | 🇮🇳 India (16.1%) | 🇺🇸 United States (20.6%) |
|---|
| Direct Visits / mo | 12.46K | 20.27M |
|---|
| User Rating | 4.3 | 4.8 |
|---|
| 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.
Describe your idea in chat and Lovable turns it into a working app or website
Describe features in everyday language and the builder creates or edits the UI, logic, and structure of a full-stack web app.
Generate front ends, backend functions, and database-backed features rather than static mockups, so the result can actually run.
Ship your project to a shareable live URL, then point a custom domain at it when you are ready to launch.
Wire the app to external APIs and services, and add AI-powered functionality such as chat, search, or generation directly inside your product.

SpecialistAn AI-powered desktop code editor offering deeper codebase control, though less instant than one-click web builders.
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An extremely similar browser-based full-stack AI builder with direct code editing and live previews.
Excels at generating gorgeous responsive UI components and full-stack frontends, backed by Vercel deployment.

Generates fully hosted web applications complete with built-in databases and payment processing from text prompts.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
SpecialistA visual low-code builder combining AI assistance with deep front-end customization and complete code export.
Free / Open-sourceFree practical deep learning courses, research and open-source libraries
SpecialistAn AI-powered desktop code editor offering deeper codebase control, though less instant than one-click web builders.
SpecialistGoogle's agent-first development platform for building and shipping software with AI agents
Turns natural language descriptions into fully functional web applications with integrated business logic and databases.
A full cloud development environment featuring an integrated AI agent for building, running, and deploying web apps.
Describe an app in chat and ship it
SpecialistFocuses heavily on high-end visual design and marketing sites with AI generation, but less on complex backends.
An extremely similar browser-based full-stack AI builder with direct code editing and live previews.
Excels at generating gorgeous responsive UI components and full-stack frontends, backed by Vercel deployment.
Generates fully hosted web applications complete with built-in databases and payment processing from text prompts.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
SpecialistA visual low-code builder combining AI assistance with deep front-end customization and complete code export.