Rambox - Messaging and Emailing app that combines common web applications into one

•    Javascript

Rambox is a messaging and emailing app that combines common web applications into one. It gives you the possibility to add common services many times you need, all in one place. It's perfect for people who work with many services for business and private accounts.

OpenChange - Open Source implementation of Microsoft Exchange server

•    C

OpenChange is a portable Open Source implementation of Microsoft Exchange server and Exchange protocols. It provides a complete solution to interoperate with Microsoft Outlook clients or Microsoft Exchange servers.

exchangelib - Python client for Microsoft Exchange Web Services (EWS)

•    Python

This module provides an well-performing, well-behaving, platform-independent and simple interface for communicating with a Microsoft Exchange 2007-2016 Server or Office365 using Exchange Web Services (EWS). It currently implements autodiscover, and functions for searching, creating, updating, deleting, exporting and uploading calendar, mailbox, task, contact and distribution list items. exchangelib uses the lxml package, and pykerberos to support Kerberos authentication. To be able to install these, you may need to install some additional operating system packages.

@GTD - An Open Source Getting Things Done (GTD) Outlook Plugin

@GTD is an open source GTD Outlook plugin to help you effectively manage your emails.

CalCheck - Outlook Calendar Checking Tool

•    C++

CalCheck is a Calendar Checking Tool for Outlook. It opens the default Calendar and checks the items in the calendar for known problems, and for certain logic problems, etc.

Confree for Outlook

Confree lets you create audio conferences from Claro / Telmex directly from Outlook.

TX Looker

•    DotNet

TX Looker is an add-on for Microsoft Outlook that allows users to utilize Team Foundation Server (TFS) through the familiar Microsoft Outlook interface.

Outlook 2010 Translate

Adds a FormRegion to mail messages to help with translation. Uses Google API Translate SDK.

Outlook 2013 Add-In

Adds extended appointment calendar to see events for several upcoming days, and enhanced new email notification system to delete/flag incoming emails.

Mediawiki tools for Office

The current version installs an Outlook 2007 plugin. This plugin adds a send to wiki command to the outlook context menu. The functionality is very similar to the behavior of the One Note plugin which is installed in office 2007.

Outlook Attachment and Picture Extractor Macro

Macro in Outlook to Download and Remove Attachment and Picture to decrease the size of your mailbox

Outlook Social Connector C# sample with Setup Project

The Outlook 2010 Social Connector allows you to integrate (mash-up) feeds from other Web 2.0 sites. This example comes with a Setup project that will help you publish and deploy your project

Memba Velodoc Outlook Add-In for sending large files from Outlook

•    DotNet

Memba Velodoc Outlook Add-in lets you send large files directly from Outlook using a variety of file transfer server platforms including Velodoc Enterprise Edition, Velodoc XP Edition, FTP servers, UNC file shares, Microsoft Background Intelligent Transfer Service (BITS) serve...

Syncing custom fields between Outlook and CRM2011

This solution update the custom fields between synced outlook contacts and CRM2011.

Controlled Vocabulary

This project provides tools to control the vocabulary of email and meeting communications so that recipients may implement more effective filtering.

Krypton OutlookGrid

Krypton OutlookGrid is a customized version of the DataGridView (C#) that allows multi-grouping and multi-sorting facilities for .NET Winforms.

OutlookPhoto

OutlookPhoto is a tool that allows you to upload your photo to Exchange Server 2010 so that it displays in Outlook 2010 on emails for which you are the sender. It also allows you to view your currently stored photo.

Gravitybox Schedule ActiveX

Gravitybox offers a general-purpose software component that may be used to display scheduled information of almost any type, in many, different formats. The component will display information in the common grid format with time and dates on opposing axes.

MapLook - Outlook AddIn

MapLook is a AddIn for Outlook to show the addresses of contacts in a map.

PST File Format SDK

PST File Format SDK (pstsdk) is a cross platform header only C++ library for reading PST files.