bkchem
Chemical structures editor
BKchem is a free chemical drawing program, which is written in Python.
aclock.app
Analog dockapp clock for GNUstep
AClock is an analog clock with display of smooth seconds. It stays in
the dock. The display is customizable:
polybori-gui
polynomials over Boolean Rings, GUI
The core of PolyBoRi is a C++ library, which provides high-level data
types for Boolean polynomials and monomials, exponent vectors, as
well as for the underlying polynomial rings and subsets of the
powerset of the Boolean variables. As a unique approach, binary
decision diagrams are used as internal storage type for polynomial
structures. On top of this C++-library a Python interface
is provided. This allows parsing of complex polynomial systems, as well
as sophisticated and extendable strategies for Groebner base
computation. PolyBoRi features a powerful reference implementation
for Groebner basis computation.
xfce4-timer-plugin
timer plugin for Xfce panel
With this plugin you can add timers (alarm or countdown) to your Xfce
panel. You can display a warning window and/or run a custom command when
alarm rings, repeat alarms etc.
The timer progress is shown as a progress bar in the Xfce panel, lasting
time displayed on tooltip.
pdftk-java
pdftk port to java - a tool for manipulating PDF documents
If PDF is electronic paper, then PDFtk is an electronic stapler-remover,
hole-punch, binder, secret-decoder-ring, and X-Ray-glasses. PDFtk is a
simple tool for doing everyday things with PDF documents. Keep one in the
top drawer of your desktop and use it to:
- Merge PDF documents
- Split PDF pages into a new document
- Decrypt input as necessary (password required)
- Encrypt output as desired
- Fill PDF Forms with FDF Data and/or Flatten Forms
- Apply a Background Watermark
- Report PDF on metrics, including metadata and bookmarks
- Update PDF Metadata
- Attach Files to PDF Pages or the PDF Document
- Unpack PDF Attachments
- Burst a PDF document into single pages
- Uncompress and re-compress page streams
- Repair corrupted PDF (where possible)