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.

Lattice algorithms using floating-point arithmetic

LanguageTool for Emacs

LaTeX package for typesetting pseudocode and cryptographic games

Emacs front end for SageMath

Emacs minor-mode for editing Python docstrings.

company-mode autocompletion for auctex

Easy base conversion in emacs

Emacs theme selection with helm interface

Repository and website for the Estimate all the {LWE, NTRU} schemes! code and paper.

Library for exact linear algebra, a C++ template-library based originally on LinBox intended for F4-like implementations