Draw and scribble in GNU Emacs
SVG Symbols library
GNU Emacs: A multimedia editor
Fill PDF form using GNU Emacs
Desktop and window management in GNU Emacs
Screen mirroring in GNU Emacs
Swipe for Text Input in GNU Emacs
Formula Editor in GNU Emacs
Transliteration in Emacs
Social Media client - Tumblr, Reddit
Comics Builder
Matching game
Interactive XPath Builder in GNU Emacs
Interactive JSON Builder in GNU Emacs
GNU Emacs as a lightweight IDE (CEDET Semantic): Java - Generate getter/setter
Generate C header
C Rename symbols
SQL (offline)