APVA Office 365 GUI Manager is a free tool for managing simple tasks in Microsoft Office 365 online without the hassle to get into PowerShell right away. Things like a simple password reset on users or managing mailbox permissions as ‘full mailbox access’ and ‘send as’ permissions I like to do easy.
One of the first things you wish for when working with SharePoint 2013 REST api, is a way to display the raw data, so you know what you have to work with. The _api JSON Viewer app is the tool that does exactly that, with a very user-friendly display and simple functionality. It even allows you to view JSON data across the site collection and every apps. This is a must have app for anyone working with the SharePoint 2013 REST _api. This app is for viewing purpose only and do not make it possible to change data.
Available in the Office App Store!
Fusion Charts Free for SharePoint (FCFS) provides a set of 22 different charts (2D & 3D) that integrates easily into your SharePoint environment (WSS 3.0 / MOSS 2007 / Sharepoint Foundation 2010 / Sharepoint Server 2010).