VDmitryV

This plugin allows developers to use the WordPress WYSIWYG editor for their own 
fields during plugin/theme development, for example – for Custom Post Types. 
Code is based on WordPress the_editor code.
Sponsored by GlobalBases.com GmbH WebBases & WebSoftware http://www.globalbases.com
PLEASE NOTE: Plugin is in alpha stage of development, so don’t expect it to be fully working. Don’t expect anything.
Known limitations: working only on post create/edit pages

WYSIWYG Helper

Plugin for developers that want to use WYISIWYG in their plugins/themes.

Pooja Parmar

Easily download any installed theme or plugin as a ZIP file directly from your WordPress admin dashboard. Adds a “Download” button to the Plugins and Themes screens for quick backups or migration. Now with bulk download support!
Features: 
* Download individual plugins and themes with a single click 
* Bulk download multiple plugins or themes at once 
* Organized ZIP structure for easy installation 
* Administrator-only access for security

Download Helper

Download Helper is a lightweight WordPress plugin that lets you manage and organize downloadable files directly from your dashboard.

WYSIWYG Helper vs Download Helper