gjots2 supports encryption for files

gjots2

Simple jotter (outline processor) for X11/gtk-gnome

gjots2 is a fairly simple jotter (outline processor) and notetaking application for your desktop.
Environment for authoring TeX (LaTeX, ConTeXt, etc) documents

texworks

Environment for authoring TeX (LaTeX, ConTeXt, etc) documents

An environment for authoring TeX (LaTeX, ConTeXt, etc) documents, with a Unicode-based, TeX-aware editor, integrated PDF viewer, and a clean, simple interface accessible to casual and non-technical users.
simple GTK+ serial port terminal

gtkterm

simple GTK+ serial port terminal

gtkterm is a simple GTK+ terminal used to communicate with the serial port.
Multi-panel tabbed file manager - GTK3 version

spacefm-gtk3

Multi-panel tabbed file manager - GTK3 version

This package is replaced by spacefm.
GTK+ Clipboard manager

diodon

GTK+ Clipboard manager

Diodon is a lightweight clipboard manager for Linux written in Vala which "aims to be the best integrated clipboard manager for the Gnome/Unity desktop".
GNU R core of statistical computation and graphics system

r-base-core

GNU R core of statistical computation and graphics system

R is a system for statistical computation and graphics. It consists of a language plus a run-time environment with graphics, a debugger, access to certain system functions, and the ability to run programs stored in script files.