AutoLISP vs .NET vs ObjectARX: Choosing the Right AutoCAD API
Which AutoCAD customization approach fits your project, budget and team?
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Official Autodesk Development Partner
Software, AI & CAD Automation Engineering That Ships
ENGIMANDI builds websites, native and cross-platform apps, APIs, SaaS products, AI agents and MCP servers, and customizes AutoCAD, Revit, Fusion 360, SolidWorks, PTC Creo and CATIA. We also write CNC post processors tuned to your machines.
Autodesk Partner
28+ Specialised Services
Clients Worldwide
NDA & IP Ownership
using Autodesk.AutoCAD.Runtime; using Autodesk.AutoCAD.DatabaseServices; public class EngimandiTools { // One click: numbers every block, exports BOM [CommandMethod("EM_AUTOBOM")] public void AutoBom() { var db = HostApplicationServices.WorkingDatabase; using var tr = db.TransactionManager.StartTransaction(); var items = BomBuilder.Collect(db, tr); ErpSync.Push(items); // SAP / Odoo / REST tr.Commit(); } }
Hours of drafting savedper drawing, every day
AI agentslive in production
What we build
CAD Customization, Automation, Integration & CNC
Plugins, add-ins, macros and integrations for AutoCAD, Revit, Inventor, Fusion, SolidWorks, Creo and CATIA. We cut out repetitive drafting, enforce your standards and connect CAD to ERP, PLM and the shop floor.
AutoCAD API Development
.NET, ObjectARX, AutoLISP and APS based AutoCAD plugins.
Learn moreAutoCAD Customization
Automate drawings, title blocks, BOMs and standards checks.
Learn moreAutodesk CAD Customization
Inventor, Vault, Civil 3D, Plant 3D and APS integration.
Learn moreAutoCAD MEP Customization
Duct, pipe and electrical automation with Revit MEP interoperability.
Learn moreAutoCAD Electrical
Schematic generation, panel layouts, wire numbering and reports.
Learn moreAutoCAD Mechanical
Standard parts, balloons, BOM and manufacturing drawing automation.
Learn moreRevit Customization
Revit add-ins, Dynamo scripts, family automation and BIM data sync.
Learn moreRevit MEP Customization
System sizing, clash-aware routing, schedules and MEP calculations.
Learn moreFusion 360 Customization
Python / C++ add-ins, parametric design automation and CAM.
Learn moreSolidWorks Customization
SolidWorks API add-ins, design configurators and PDM integration.
Learn morePTC Creo Customization
Creo Toolkit, J-Link / Object TOOLKIT and Windchill integration.
Learn moreCATIA Customization
CAA RADE, VBA / CATScript automation and 3DEXPERIENCE apps.
Learn moreCAD Integration & Automation
CAD to ERP, PLM, CRM and web configurator integrations.
Learn moreCNC Post Processors
Custom posts for Fusion, Mastercam, NX, hyperMILL and more.
Learn moreOfficial Autodesk Development Partner
Our engineers work directly with the Autodesk platform APIs (AutoCAD .NET/ObjectARX, Revit API, Fusion 360 API and Autodesk Platform Services) to build plugins, automation and integrations that fit how your design team works.
Also available
Software, Mobile & AI Development
From a first MVP to enterprise SaaS, we design, build and maintain software that your users enjoy and your team can scale.
Website Development
Fast, SEO-ready corporate websites and landing pages that convert.
Learn moreWeb Applications
Portals, dashboards and business systems built on modern stacks.
Learn moreNative Android Apps
Kotlin and Jetpack Compose apps for phones, tablets and devices.
Learn moreNative iOS Apps
Swift and SwiftUI apps for iPhone, iPad, Apple Watch and Mac.
Learn moreCross-Platform Mobile
Flutter and React Native apps: one codebase for Android and iOS.
Learn moreNative Desktop Apps
WPF, WinUI, macOS and Linux apps with deep OS integration.
Learn moreCross-Platform Desktop
Electron, Tauri, Qt and .NET MAUI apps for Windows, macOS and Linux.
Learn moreAPI Development
REST, GraphQL and gRPC APIs that are secure, documented and fast.
Learn moreSDK Development
Multi-language SDKs and client libraries developers like to use.
Learn moreMCP Server Development
Model Context Protocol servers that connect LLMs to your tools and data.
Learn moreAI Agent Development
AI agents that handle support, sales, operations and engineering tasks.
Learn moreAgentic AI Development
Multi-agent systems that plan, use tools and complete workflows end to end.
Learn moreSaaS Development
Multi-tenant SaaS with subscriptions, billing and analytics built in.
Learn moreMVP Development
Launch-ready MVPs in weeks to validate your idea with real users.
Learn moreVideo Editing
Company, brand, YouTube and event videos edited to look and sound professional.
Learn more
Why ENGIMANDI
Software engineers and CAD engineers in one team
Most software companies do not understand drawings, tolerances or G-code, and most CAD consultancies cannot build a proper SaaS product. ENGIMANDI does both. Your CAD plugin can talk to your web portal, your AI agent can read your BOM, and your CNC post can take its data straight from your ERP.
- Official Autodesk Development Partner
- Native and cross-platform experts
- AI agents, LLMs & MCP servers
- Fixed-price or dedicated team
- NDA and 100% IP ownership
- Post-launch support & maintenance
How we work with you
1. Discovery call
We learn your goals, users, CAD workflow or tech constraints.
2. Proposal & estimate
Clear scope, milestones, timeline and fixed or flexible pricing.
3. Build in sprints
Weekly demos, a shared board and direct access to engineers.
4. Launch & support
Deployment, training, documentation and ongoing maintenance.
28+Specialised services
10+CAD platforms supported
24hQuote turnaround
100%Source code ownership
Industries
Who we build for
Startups, product companies, manufacturers and AEC firms across India, the Middle East, Europe and North America.
Manufacturing
AEC & BIM
Automotive
Aerospace
Energy & Utilities
Healthcare
E-commerce & Retail
Startups & SaaS
Technology
Tools and platforms we use every day
HTML5 / CSS3JavaScript / TypeScriptReactNext.jsAngularVueNode.js.NET / C#PythonGoJavaKotlinSwift / SwiftUIFlutterReact NativeElectronTauriQt / C++PostgreSQLMongoDBAWSAzureDockerOpenAIClaudeLangGraphMCPAutoCAD .NET / ObjectARXAutoLISPRevit APIDynamoFusion 360 APIAutodesk Platform ServicesSolidWorks APICreo ToolkitCATIA CAAG-code / Post Processors
Insights
From our engineering blog
FAQ
Common questions
Where is ENGIMANDI located?
ENGIMANDI is a brand of HENDOI TECHNOLOGIES PVT LTD, located on Hanumar Koil Street, West Mambalam, Chennai, Tamil Nadu 600033 (near ICICI Bank ATM). We work with clients across India and worldwide.
Are you really an Autodesk development partner?
Yes. ENGIMANDI is an official Autodesk Development Partner. We build AutoCAD, Revit, Fusion 360, Inventor and Autodesk Platform Services solutions for our clients.
Do you work with international clients?
Yes. We work with clients in the USA, UK, Europe, the Middle East, Australia and Asia. We overlap with your working hours and communicate over WhatsApp, email, Teams, Zoom or Slack.
Who owns the source code?
You do. After final payment you receive 100% of the source code and intellectual property. We are happy to sign an NDA before you share any details.
How do I get a quote?
Call or WhatsApp us on +91-9677261485, or email support@hendoi.com with a short description. We usually reply with questions or an estimate within 24 hours.