A bare-bones version of CoolTerm released as an opensource project. Written in Xojo.

A previous version of VisualTimer released as an opensource project. Written in Xojo.

A REALBasic class that implements support for complex numbers with Double precision. Standard operators are overloaded, and many other mathematical functions are implemented to work with complex numbers. Comes with a module with wrapping functions for convenience, as well as a test harness for quick verification.

A set of Xojo classes for plotting data, Y versus X. Useful for Math, Engineering, or other scientific disciplines. Includes a User's Guide and several examples.
NEW: Cross-platform Hi-DPI support.

Contributions from others:
Examples, additions, etc. from users in the community.
Note: These projects are not actively supported. Please contact the individual contributors for questions and information.

• DataPlot Zoom: Interactive zoom, by Hakan Nyberg
• Candlestick and Piechart: Two additional Classes by Leonidas Brasileiro

A modified version of the Trace Class (part of DataPlotClasses) to demonstrate a way to draw smooth traces.
NOTE: Lines styles other than solid as well as the TraceClick, MouseOverTrace, and MouseDownTrace events are not properly supported by this modified version.

FFT Suite is a REALBasic Module with a set of methods related to FFTs. Its FFT functions implement the Cooley-Tukey Algorithm for real and complex FFTs. Also included are methods to generate various window functions.

Requires Complex Utilities.

The included example Project FFT Demo requires DataPlotClasses.

A real time graphical digital circuit simulator with a library of logic ICs. It also includes a fully functional timing simulator although no file I/O has been implemented for it yet. Circuits can be copied and pasted into the timing simulator (as text). Stimuli have to be edited as text.

Requires DataPlotClasses.

A demo that implements the Minimax Algorithm with alpha-beta pruning to play Tic Tac Toe.
This example project demonstrates the use of the following REALBasic elements:
Blaite.

• Recursive Methods
• Control Cloning
• User Interface Controls: BevelButton

A simple example that counts the colors in a picture and how many pixels of each color the picture contains.
This example project demonstrates the use of the following REALBasic elements:

• FolderItem
• TextOutputStream
• Canvas
• Picture
• Graphics
• RGBSurface
• User Interface Controls: EditField, ListBox

A REALBasic implementation of Conway's Game of Life.
This example project demonstrates the use of the following REALBasic elements:

• Custom class
• Canvas
• Timer
• User Interface Controls: PushButton, EditField, Slider
• Support for Retina Macs

A REALBasic implementation of Langton's Ant.
This example project demonstrates the use of the following REALBasic elements:

• Thread
• Canvas
• User Interface Controls: PushButton

A simple example using a POP3 Socket. The IP address of a valid POP3 server as well as an account on that server is required to try the example.
This example project demonstrates the use of the following REALBasic elements:

• POP3 Socket
• User Interface Controls: PushButton, EditField, PopupMenu

A simple 'Send Mail' application using an SMTP Socket. The IP address of a valid SMTP server as well as an account on that server is required to send e-mail.
This example project demonstrates the use of the following REALBasic elements:

• SMTP Socket
• User Interface Controls: PushButton, EditField, BevelButton

Persian nights collection download. A small demo application using an SMTP Socket to send e-mails with file attachments. Attachments can be added via drag-and-drop of files and folders onto a ListBox
This example project demonstrates the use of the following REALBasic elements:

• SMTP Socket
• User Interface Controls: PushButton, EditField, ListBox (with context menus)

A small and basic terminal application using MSComm instead of REALBasic's Serial control to demonstrate the use of ActiveX controls on Windows platforms.
This example project demonstrates the use of the following REALBasic elements:

• ActiveX Control
• User Interface Controls: PushButton, EditField

Written by Robert Rau, this example project demonstrates virtually all aspects of the Serial Control. This provides an excellent introduction to programming for Serial ports using REALBasic.
This example project demonstrates the use of the following REALBasic elements:

• Serial Control
• Timer
• User Interface Controls: PushButton, EditField, PopupMenu

A handy wrapper for the Windows Serial Port API, originally posted at dev.emcelettronica.com/serial-port-communication-excel-vba which makes serial port communication via VBA without using MSComm really easy. Unfortunately, the original post seems to no longer exist, so I'm reposting the source code packed into a VBA module in an Excel file.