Free expression software for mac

eTktab is an ascii tablature editor for 4/5/6 stringed instruments. This program is used to write out guitar tablature in the typical style of ascii tab.

Main features:
- 30 fretboard positions available by single keypress
- lyrics
- expression marks
- solo/chord tab entry modes
- custom guitar tunings and keybindings.

Enhancements
- release for Mac OS X only
- workaround for OS X menu accelerator bug

Filtre & Go is the first generic filter for EIMS.

It provides headers, server ID, return path and body filtering with case sensitive and insensitive regular expression and literal strings.

It honors DNS exclusions, provides test modes and updates filters on the fly.

Filtre & Go is a free and an open source (BSD-Lite license) project. Binaries are provided for 68K, PPC and Carbon.

Any Calc CM is a contextual menu that can calculate mathematical expressions.

Just select the expression and Control-click (or right mouse button click) on it to open the contextual menu. The contextual menu will show the result. Select the result to copy into the clipboard. Then you can paste the result where you need.

ScopeTester is a small application for testing the serial port response of Meade Autostar, LX200 or LX200GPS telescopes. This app was developed to test some specific features, but you might find it useful or entertaining. Usage is self-evident.
ScopeTester is a Meade telescope serial communications utility.
Enhancements:
- Can check incoming text for match against given text (or, optionally, a regular expression). Will beep and/or highlight the text.
- Can decode GPS messages.

Expression Evaluator is a set of classes for REALbasic which enables you to evaluate mathematical expressions.
Main features:
- Supports freeform expressions
- Follows standard order of operations
- Many built-in functions
- Support for variables.

AquaPath is a free Cocoa-based developer tool for Mac OS X Tiger that allows you evaluate XPath expressions against any XML document and view the result sequence in a dynamic, intuitive tree representation.
Using AquaPath is simple! Open an existing XML document (of any type) or even author an XML document using AquaPath itself (AquaPath is also a rudimentary text editor). The source text of your XML document appears under the "Source" tab in an AquaPath document window... use this tab to author or edit your document.
Next, type an XPath expression into the "XPath" textfield at the top of the AquaPath document window. Click "Evaluate" to see the matching node sequence. You will see a status bar message just below the XPath text field showing either the number of nodes in the result sequence or and error message if your XML document is not well-formed or if your XPath expression is invalid.
Under the "Results" tab, you will find a text area containing the string value of the result sequence. The whitespace of each node has been compressed so that you will see a single nodes string value per line. This tabs contents are convenient for copy-pasting the results to another text editor or wherever.
The "Display" tab is where all the magic happens. Here you will see a dynamic (DHTML), syntax-colored representation of your XML document with "-" or "+" signs next to each element node. Use these symbols for collapsing and expanding a given element and its children.
Also, all nodes and text matching your XPath expression will be highlighted in yellow.
Enhancements:
- AquaPath now allows you to specify the context node for your XPath expression (previously, the document node was always the context node). The context node will be highlighted with a solid black border.
- Line numbers in the source editor.
- AquaPath is now a Universal Binary.

Fractographer is a program to plot the fractals of mathematical functions.
It can take any arbitrary formula you input, so long as it follows a few guidelines.
You can then save the current fractal to an image of any size you want.
More specific information is found in the included readme.
To use Fractographer, you will need to provide the following information: an expression for z (the parameter for the iterated formula), c (a constant expression), and for z(n + 1) (the iterated formula). Additionally, you can provide how many times you want the formula to be iterated over, the escape radius, and the colors for the inner bounds, outer bounds, and an arbitrary middle bound.
Enhancements:
- Fixed another formula parser bug.
- Released the source.

BatchRenamer can rename multiple files using Perl-Compatible Regular Expressions. It also allows sorting by date or file name, and numbering of files, and even counters placed inside regex replacement expressions. BatchRenamer supports previewing of file names, and drag-and-drop copying of renamed files.
Enhancements:
- Table column header didnt highlight properly after a purge/add.
- Sorting is now maintained after files are added.
- The file listing is now unsorted after purging.
- Fixed some minor memory leaks.
- Use Cocoa instead of Carbon to get file creation date (same results).