Top 9 office-addin Open-Source Projects

OneMore

103 2,282 9.7 C#

A OneNote add-in with simple, yet powerful and useful features

Project mention: Do you think there are any practical / genuine benefits of using rich text in apps like in Microsoft Word, over markdown? | /r/ObsidianMD | 2023-06-03

Another thing - on the PC, I use OneMore. It is an addon created by u/stemarcoh, which has been immensely useful in doing some of the things - especially custom styles. (https://github.com/stevencohn/OneMore)

script-lab

1 691 6.6 TypeScript

Create, run and share your code directly from Office
SurveyJS

surveyjs.io featured

Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
MHA

2 263 9.5 TypeScript

Message Header Analyzer Add-in For Outlook

Project mention: mailhops-node VS MHA - a user suggested alternative | libhunt.com/r/mailhops-node | 2023-11-30

https://mha.azurewebsites.net/

BibWord

1 261 0.0 XSLT

Microsoft Word and Bibliography Styles extender.
xloil

5 117 8.8 C++

xlOil provides framework for interacting with Excel in different programming languages (python & C++ currently)
advanced-formula-environment

3 103 0.0

Create, edit, and reuse formulas in Excel
blazor-office-addin

1 9 0.0 HTML

A sample Office Add-In based on Blazor Server
InfluxDB

www.influxdata.com featured

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
msgraph-sample-office-addin

1 8 8.7 JavaScript

This sample demonstrates how to use the Microsoft Graph JavaScript SDK to access data in Office 365 from Office Add-ins.

Project mention: How to make Graph API call from localhost? | /r/GraphAPI | 2023-07-10

I set up this example in JS https://github.com/microsoftgraph/msgraph-sample-office-addin. The request URL used in this example looks like this:

sheets_manager_excel_addin

1 6 10.0 Dart

Excel Web Addin to manage Worksheets easier inside a Excel Workbook

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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mailhops-node VS MHA - a user suggested alternative

2 projects | 30 Nov 2023
What products are most often sold together?

1 project | /r/excel | 23 Jan 2023
Excel Never Dies

4 projects | news.ycombinator.com | 4 Aug 2022
https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-6-rc-1

1 project | /r/Blazor | 15 Sep 2021
Help! Script Lab in Excel crashing because it evaluates while loops while I write them. Can I switch to manual page reload?

1 project | /r/OfficeJs | 26 Feb 2021
A note from our sponsor - InfluxDB
www.influxdata.com | 1 May 2024

Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality. Learn more →

Index

What are some of the best open-source office-addin projects? This list will help you:

	Project	Stars
1	OneMore	2,282
2	script-lab	691
3	MHA	263
4	BibWord	261
5	xloil	117
6	advanced-formula-environment	103
7	blazor-office-addin	9
8	msgraph-sample-office-addin	8
9	sheets_manager_excel_addin	6