× Help save net neutrality! Learn more.
Great Cow BASIC Icon

Great Cow BASIC

5.0 Stars (25)
213 Downloads (This Week)
Last Update:
Download select from this page for your download
Browse All Files
Windows Mac Linux



Great Cow BASIC is an open-source BASIC compiler for 8 bit Microchip PIC and Atmel AVR microcontrollers. Also included in the project is Great Cow Graphical BASIC, an icon based editor for GCBASIC programs.

The latest release is September 2017. We are even closer to v1.00 release!!

Please see the download section for your options. We have a Graphical IDE and textual IDE, we have just the compiler and we have a minimal install - it is your choice.

Please see the homepage here: http://gcbasic.sourceforge.net and also see http://gcbasic.sourceforge.net/download.html for other Great Cow Basic download options.

Great Cow BASIC Web Site


Other Useful Business Software

Monitor your Cisco ASA like an expert Icon

See how Network Insight™ for Cisco® ASA, a feature of SolarWinds Network Performance Monitor and Network Configuration Manager, can help.

Monitor your Cisco ASA like an expert Icon
Get visibility into the health and performance of your entire Cisco ASA environment in a single dashboard. View VPN tunnel status and monitor firewall high availability, health, and readiness. Automatically discover and filter within ACLs, show rule hit counts, and detect shadow and redundant rules. Automate the monitoring and management of your ASA infrastructure in a fully integrated solution. Try it free for 30 days!

User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
Write a Review

User Reviews

  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Great effort by GCBasic developers and contributors. Hope to see more features in future versions. There is always room for improvement.

    Posted 11/23/2017
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Responsive Community

    Posted 11/15/2017
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Really the best.

    Posted 11/02/2017
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Impressive how small and fast is the generated Code is.

    Posted 07/30/2017
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Simply fabulous. I have been programming since the days of the ZX80 and ZX81, using a variety of programming languages. To list but a few: Sinclair Basic, OPL {Psion} [Organiser Programming Language], COBOL, [Early] Visual Basic, QBasic, Turbo Pascal and Delphi [Pascal for Windows]. Delphi is the language I worked with the most, and the one I enjoyed the most. All of the above have a syntax that is 'Basic' like. I've worked in C, and whilst I can read it, I don't enjoy it that much. When looking into Microprocessor programming for my own personal use, I saw PIC processors but was put off using them as I initially thought they could only be programmed using assembler or an expensive compiler. I tried to learn assembler programming, but could not make any sense of it whatsoever and gave up. Some years later, I discovered the mBed platform and bought myself an mBed board. I programmed this to create a clock for myself which told the time using a single LED that flashes out the time automatically every five minutes in a sequence of hours, tens of minutes, units of minutes. I then looked at some other projects but was put off by the cost of incorporating an mBed board in each device. I then discovered the superb PicAxe devices. These are modified PIC processors running a custom interpreter that allows the program to be written in [PicAxe] Basic then uploaded to the processor using a very simple serial interface. The PicAxe devices require no complex motherboards nor do they have convoluted power requirements they simply need connecting up correctly and programming. Done. I used many different PicAxe devices to build many projects, both for myself and the further education college I worked for. One downside of the PicAxe devices is that the cost of the processors is a little higher than the PIC processors they are based on. For single builds of a piece of equipment this isn't an issue given the speed of development they offer, but for my newer job where we might need to make a few hundred units, the PIC devices become far more competitive in price. Also the interpreter on the PicAxe device causes the code to be executed slower than the code generated by Great Cow Basic then loaded into the equivalent PIC. Great Cow Basic offers the ability to continue using a programming language I'm familiar with, to program PIC processors. I use a GQ-4X programmer for some of the Eprom devices we use and this can program the PIC devices with the code generated from Great Cow Basic. I currently tend to build and program any prototype units with PicAxe processors, then having ironed out any issues with the design I transfer over to the equivalent PIC device, with Great Cow Basic. There are a few minor annoyances with Great Cow Basic, but the majority of those annoyances are that whilst PicAxe Basic and Great Cow Basic are dialects of Basic, they are different and I'm often caught out by the subtleties of the languages.The fact that one language requires the end of an 'If' statement to use the token 'EndIf' and the other to use 'End If' is caught by the pre-processor. But I still find myself wondering why something doesn't work as planned only to find I've Defined a variable as being called 'A_Variable' but later in the code accidentally referenced it as 'A_Variabl'. This doesn't cause the pre-processor to complain, it silently creates a second variable 'A_Variabl' which of course has a different value to the original. Yet given how breathtakingly good Great Cow Basic is, I feel it is extremely churlish to be so rude as to point this type of thing out. The writers of Great Cow Basic should be proud of their achievements, it is a collection of programs that work wonderfully well and I want to thank all involved for their generosity, enthusiasm and the sheer quality of them.

    Posted 03/02/2016
Read more reviews

Additional Project Details


Italian, English, Turkish, German, Spanish

Intended Audience

Education, Developers

User Interface

.NET/Mono, Command-line

Programming Language

Visual Basic .NET, BASIC



Thanks for helping keep SourceForge clean.

Screenshot instructions:
Red Hat Linux   Ubuntu

Click URL instructions:
Right-click on ad, choose "Copy Link", then paste here →
(This may not be possible with some types of ads)

More information about our ad policies

Briefly describe the problem (required):

Upload screenshot of ad (required):
Select a file, or drag & drop file here.

Please provide the ad click URL, if possible:

Get latest updates about Open Source Projects, Conferences and News.

No, Thank you