CalcForge records 31,360 monthly visits with -4.8% month-over-month growth and Free, Paid pricing. Napkin AI records 1,029,978 monthly visits with -17.5% growth and Freemium pricing.
Open-source engineering calculators for civil and structural design
Turn plain text into diagrams, infographics, and presentation-ready visuals.
| Dimension / Metric | | |
|---|---|---|
| Official Domain | calcforge.com | napkin.ai |
| Pricing Model | Free, Paid | Freemium |
| Monthly Visits | 31.36K (31,360) | 1.03M (1,029,978) |
| MoM Traffic Delta | -1.56K (-4.8%) | -218.06K (-17.5%) |
| Primary Market & Share | 🇮🇳 India (16.1%) | 🇮🇳 India (9.1%) |
| Direct Visits / mo | 12.46K | 443.98K |
| User Rating | 4.3 | 4.7 |
| 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.
Turn plain text into diagrams, infographics, and presentation-ready visuals.
Paste or import your text and Napkin generates infographics, diagrams, flowcharts, mind maps, and data charts that fit your content.
Napkin Slides collaborates with you to turn ideas into complete, ready-to-present decks rather than static images.
Adjust colors, fonts, layouts, and icons, reshape individual elements, and match your brand — nothing is locked after generation.
Export visuals as PPT, PNG, PDF, or SVG and drop them into PowerPoint, Google Slides, Keynote, Notion, or any tool you already use.
Powerful collaborative visual workspace with robust AI brainstorming and diagramming tools, but broader feature set.
Powerful collaborative visual workspace with robust AI brainstorming and diagramming tools, but broader feature set.
Generates beautifully styled presentations and documents from text prompts, though less focused on inline diagramming.
Generates beautifully styled presentations and documents from text prompts, though less focused on inline diagramming.
Turn text and data into polished infographics, reports and videos with AI
Turn text and data into polished infographics, reports and videos with AI
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Collaborative whiteboard featuring built-in AI tools for flowcharts, mind maps, and diagrams.
Collaborative whiteboard featuring built-in AI tools for flowcharts, mind maps, and diagrams.
Free / Open-sourceFree practical deep learning courses, research and open-source libraries
Specialized in AI diagramming, mind maps, and flowcharts, but lacks Napkin's seamless inline text integration.
Specialized in AI diagramming, mind maps, and flowcharts, but lacks Napkin's seamless inline text integration.
Transforms natural language into structured mind maps and visual flowcharts on an infinite canvas.
Transforms natural language into structured mind maps and visual flowcharts on an infinite canvas.
Free / Open-sourceOpen-source database of AI models, prices and capabilities
Free / Open-sourceOpen-source database of AI models, prices and capabilities
Free / Open-sourceFree open course for prompt engineering and AI security
Free / Open-sourceFree open course for prompt engineering and AI security
SpecialistTurn any idea into an interactive visual story with AI agents
SpecialistTurn any idea into an interactive visual story with AI agents
SpecialistIndependently scored open-source alternatives to paid SaaS
SpecialistIndependently scored open-source alternatives to paid SaaS
