Unlock The Full Power Of Microsoft 365 &
Google Workspace

Custom Excel, Outlook, Word, and PowerPoint add-ins, along with Google Docs, Sheets, Slides, and Gmail add-ons, built using Office.js and Google Apps Script. Designed to automate workflows, boost productivity, and deliver seamless experiences for teams working in Microsoft 365 and Google Workspace.

HQ Address

Sargodha, Punjab,Pk

Direct Email

info.nexaaisolution@gmail.com

Global Deployment Records

Trusted by Teams Shipping
Real-World Solutions

From Fortune 500s to high-growth startups, we've delivered 100+ custom extensions across Microsoft 365 and Google Workspace.

Ademola logo

Ademola

AI Integration for Review

Word AI Plugin

AJ Word Addin logo

AJ Word Addin

Custom Document Tools

Word Add-in

Ally Word logo

Ally Word

Word Add-in Development

Legal Tech

Amafive logo

Amafive

Custom Add-in Logic

Solution

Boligfloe logo

Boligfloe

Outlook Management

Real Estate

DataHive logo

DataHive

Excel Data Sync

Data Analytics

Doccpet logo

Doccpet

Document Workflows

Automation

Ericson logo

Ericson

Excel Customization

Enterprise

Excel Ticktack logo

Excel Ticktack

Excel Tool Integration

Finance

Fyendera logo

Fyendera

Email AI Automations

AI Solutions

GesDoc logo

GesDoc

Attachment Management

Integration

GoCanopy logo

GoCanopy

Internal System Link

Outlook

Istadraq logo

Istadraq

Word Legal Assistant

Legal AI

Kory AI logo

Kory AI

AI Workflow Agent

Technology

Mail Proven logo

Mail Proven

Fingerprint Match Add-in

Security

Makhf logo

Makhf

Outlook Tracker

Finance

Portant logo

Portant

Document Automation

Automation

SharePoint logo

SharePoint

Microsoft Integration

Collaboration

Time Tackle logo

Time Tackle

Schedule Optimization

Calendar

TransitChat logo

TransitChat

Outlook Integration

Communication

Ademola logo

Ademola

AI Integration for Review

Word AI Plugin

AJ Word Addin logo

AJ Word Addin

Custom Document Tools

Word Add-in

Ally Word logo

Ally Word

Word Add-in Development

Legal Tech

Amafive logo

Amafive

Custom Add-in Logic

Solution

Boligfloe logo

Boligfloe

Outlook Management

Real Estate

DataHive logo

DataHive

Excel Data Sync

Data Analytics

Doccpet logo

Doccpet

Document Workflows

Automation

Ericson logo

Ericson

Excel Customization

Enterprise

Excel Ticktack logo

Excel Ticktack

Excel Tool Integration

Finance

Fyendera logo

Fyendera

Email AI Automations

AI Solutions

GesDoc logo

GesDoc

Attachment Management

Integration

GoCanopy logo

GoCanopy

Internal System Link

Outlook

Istadraq logo

Istadraq

Word Legal Assistant

Legal AI

Kory AI logo

Kory AI

AI Workflow Agent

Technology

Mail Proven logo

Mail Proven

Fingerprint Match Add-in

Security

Makhf logo

Makhf

Outlook Tracker

Finance

Portant logo

Portant

Document Automation

Automation

SharePoint logo

SharePoint

Microsoft Integration

Collaboration

Time Tackle logo

Time Tackle

Schedule Optimization

Calendar

TransitChat logo

TransitChat

Outlook Integration

Communication

Engineering Excellence Across 52+ Enterprise Verticals

Add-ins by application

Microsoft Office add-ins and Google Workspace add-ons — same delivery quality, built for the apps your teams use every day.

Microsoft Office

Google Workspace

Execution Framework

Our Strategic Development Engine

From architectural planning to global AppSource deployment, we ensure your enterprise extensions are secure, scalable, and native.

Phase 01

DISCOVERY & ANALYSIS

We analyze your existing Office 365 or Google Workspace workflow to identify automation bottlenecks.

Phase 02

UX & ARCHITECTURE

Designing bespoke UI/UX that blends natively into Excel, Outlook, or Gmail using Office.js and Apps Script.

Phase 03

AGILE DEVELOPMENT

Building robust add-ins integrated with AI models and secure Microsoft Graph or Google APIs.

Phase 04

DEPLOYMENT & SUPPORT

Final publication to AppSource or Workspace Marketplace with end-to-end security audits.

About Nexa AI

Building Software That Fits The Way Your Team Works

100+
Projects Delivered
5+
Years Experience
4.9★
Client Rating
Learn More
Nexa AI Platform
Verified Client Feedback

Customer Wall of Love

"Even though we ran into issues with the app being rejected by MSFT Store several times, working closely with Shahzad, we were able to get it resolved and published."

dvmoore

dvmoore

United States
Fiverr

"Great work, even though we had to go through numerous versions due to my expectations he kept going and didn't get frustrated! Excellent work, would definitely recommend!"

jameswragg340

jameswragg340

United Kingdom
Fiverr

"I really enjoyed working with him. His language fluency made communication very easy and clear. He always respected the delivery time and finished his work on schedule. He showed a deep understanding of the tasks and always did his best. He did an exceptional job."

fajerhs

fajerhs

Kuwait
Fiverr

"Incredible process. Will continue this relationship."

taytay2213

taytay2213

United States
Fiverr

"Excellent developer. Built a smooth desktop outlook addin and handled the Microsoft Store publishing process professionally. Highly recommended!"

poppy_lane1

poppy_lane1

Germany
Fiverr

"Clean, efficient, and well-built Google Docs add-on. Very impressed."

soren_pike

soren_pike

Australia
Fiverr

"Very impressed with the Excel add-in delivered. The developer was professional, understood complex requirements, and delivered a reliable solution. Communication was excellent throughout the project."

kialorn

kialorn

Germany
Fiverr

"Amazing work on the Word Add-in. Fast delivery, professional communication, and great technical skills. Highly recommended!"

pat_cummins89

pat_cummins89

nigeria
Fiverr

"Great experience working with this developer. He delivered exactly what I needed for my Google Workspace add-on and communicated clearly throughout the project."

VE

vexzon

United Kingdom
Fiverr

"It was an exceptional experience working with him. He went above and beyond expectations, demonstrating excellent language fluency, proactive communication, and deep understanding. He was highly responsive, cooperative, polite, and delivered the work on time."

fajerhs

fajerhs

Kuwait
Fiverr
FAQ

Office Add-in Development FAQs

Everything you need to know about our services, process, and solutions.

An Office 365 add-in is a web app that runs inside Excel, Outlook, Word, or PowerPoint using Office.js — so your team automates workflows without leaving Microsoft 365.
Modern Office add-ins use Office.js and web technologies, deploy through Microsoft 365 admin center, and work across web and desktop Office. Legacy COM/VSTO plugins are a different technology with separate deployment models.
Discovery packages start from $4,500. Full Build engagements for one app typically start from $18,000 depending on Office.js scope, Microsoft Graph integrations, and deployment requirements.
Yes. We build Google Docs, Sheets, Slides, and Gmail add-ons with Apps Script alongside Microsoft Office 365 add-ins for Excel, Outlook, Word, and PowerPoint.
Discovery runs 1–2 weeks. A focused Build for one Office or Google app is often 6–12 weeks after scope is confirmed, including pilot testing and admin deployment support.

Ready to build your add-in?

Book a 30-minute call. We'll map your Office APIs, timeline, and fixed-price options.

Book a consultation