tesseract-ocr is an OCR engine originally developed by Hewlett Packard and now sponsored by Google. It is highly accurate and will read a binary, gray, or color image and output text.
Roundup is a simple-to-use and install issue-tracking system with web, command-line xmlrpc, rest (in the 2.0 development line) and e-mail interfaces. It is based on the winning design from Ka-Ping Yee in the Software Carpentry Track design competition. Downloading the source allows you to start a demo instance in a few minutes to see if it will fill your needs.
dsargparse is a wrapper of argparse library which prepares helps and descriptions from docstrings. It also sets up functions to be run for each sub command, and provides a helper function which parses args and run a selected command. Using this library, you don't need to write same texts in docstrings, help, and description.
FIM is a lightweight universal image viewer, mostly for Linux. It is highly customizable and scriptable, and for users who are comfortable with software like the VIM text editor or the Mutt mail user agent. You can control it using the keyboard. FIM can open many file formats (even using converters) and it can display pictures graphically, with the Linux framebuffer or under X/Xorg, or in a terminal as ASCII Art renderings.
An empty, event-driven daemon with built-in CLI. Includes a simple publish/subscribe mechanism. Written in C and has no dependencies (but plug-ins can be in any language). Intended for robotics but may be useful elsewhere.
expect-lite is a mature, quick and easy command line automation tool. Includes a Powerful Debugger with breakpoints, step/skip, copy/paste expect-lite lines right into a running script. Structured programming via Code Blocks, enables easy to create while loops, and conditionals (if statements). Full IPv6 support, using telnet or ssh over IPv6, and IPv6 addresses in the script.
Alarm is command line alarm clock utility written in Python language.
Command line based user interface for editing and applying python scripts that convert lines in a file or from stdin however the user wants it and by whatsoever method is available through python including regex, parsers, string manipulation, calling subprocesses and everything else.
Tool that converts the help message of a program into a full-fledged manpage. Can use additional information from a file. The easy to use, fast way to generate a manpage. Written in python and based on the docopt parser.