It's Magit! A Git Porcelain inside Emacs.

Project Interaction Library for Emacs

Minor mode for Emacs that deals with parens pairs and tries to be smart about it.

Jump to things in Emacs tree-style

Emacs package that displays available keybindings in popup

org-mode modules for citations, cross-references, bibliographies in org-mode and useful bibtex tools to go with it.

The Solarized colour theme, ported to Emacs.

LanguageTool for Emacs

Emacs front end for SageMath

company-mode autocompletion for auctex

Easy base conversion in emacs

Emacs theme selection with helm interface