
More advanced AI customer support agents and robust helpdesk features, but typically higher pricing than Respond.io.
CalcForge records 31,360 monthly visits with -4.8% month-over-month growth and Free, Paid pricing. Respond.io records 1,606,802 monthly visits with -8.7% growth and Freemium pricing.
Open-source engineering calculators for civil and structural design
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | calcforge.com | respond.io |
| Pricing Model | Free, Paid | Freemium |
| Monthly Visits | 31.36K (31,360) | 1.61M (1,606,802) |
| MoM Traffic Delta | -1.56K (-4.8%) | -152.34K (-8.7%) |
| Primary Market & Share | 🇮🇳 India (16.1%) | 🇲🇾 Malaysia (17.4%) |
| Direct Visits / mo | 12.46K | 1.24M |
| User Rating | 4.3 | 4.5 |
| 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.

AI-powered customer conversation platform for B2C messaging at scale
Bring WhatsApp, TikTok, Instagram, Facebook, Telegram, email and web chat into one shared inbox so no customer thread gets lost between apps.
AI agents qualify leads, answer routine questions, route to the right teammate and follow up automatically when conversations go quiet.
Track tags, custom fields, lead status and lifecycle stage per contact, and move deals through a pipeline without a separate CRM.
Reach thousands of customers with one message, and capture new leads directly from social ads and website links.

More advanced AI customer support agents and robust helpdesk features, but typically higher pricing than Respond.io.

SpecialistPurpose-built e-commerce helpdesk with deep Shopify integrations, but less generalized multi-channel routing than Respond.io.
Easier setup for live chat and shared inboxes, but less powerful automation workflow builder than Respond.io.
Easier setup for live chat and shared inboxes, but less powerful automation workflow builder than Respond.io.

SpecialistAI-first WhatsApp marketing and engagement platform built on official WhatsApp Business APIs
SpecialistAI-first WhatsApp marketing and engagement platform built on official WhatsApp Business APIs

Simpler chatbot builder and e-commerce integrations, but fewer advanced multi-channel routing options than Respond.io.
Simpler chatbot builder and e-commerce integrations, but fewer advanced multi-channel routing options than Respond.io.

Streamlined team inbox for WhatsApp and messaging apps, but lacks Respond.io's advanced AI agent workflow builder.
Streamlined team inbox for WhatsApp and messaging apps, but lacks Respond.io's advanced AI agent workflow builder.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free / Open-sourceSearch and study millions of public SKILL.md agent skills

Solid multi-channel helpdesk and live chat features, but less sophisticated visual workflow automation than Respond.io.
Solid multi-channel helpdesk and live chat features, but less sophisticated visual workflow automation than Respond.io.

Strong omnichannel routing across social messaging apps, but less extensive enterprise ticketing features than Respond.io.
Free / Open-sourceFree practical deep learning courses, research and open-source libraries

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