The Hal Spacejock series


yWriter8 by Spacejock Software

Requires the .Net 6.0 runtime

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Download yWriter8 as a self-installing EXE file (recommended)

yWriter8 exe installer (13.5mb)


Download yWriter8 in a zip file

yWriter8 zip file (10.5mb)

yWriter8 released 23/Jan/2024

• It doesn't matter whether you run the same installer more than once.
• Installing or upgrading yWriter8 will not delete or overwrite your data OR your settings.
• There is no need to uninstall yWriter8 before running this updater.
See below for the list of changes

Change Log:

Installing on Windows:
Please note: for three years I signed my installers with SSL certificates, but this year the price is suddenly triple what it used to be. So, no more installer signing, because there is no way I'm paying $600 to code-sign free software.

1) Download the installation file. Locate the file and run your normal anti-virus scan on it. Once you're happy it's free of viruses, run the installation file. You should see something like this:

Click Yes to proceed or No to cancel.

Instead of the above, Windows may throw up a warning similar to the one below:

At this point you either trust me (and my company, Spacejock Software) and click 'Yes', or you click 'No' and delete the installer. That's up to you - just bear in mind I set up this website over twenty years ago, and if I was offering dodgy software someone would have closed it down by now, wouldn't they? I'm also an author with almost thirty novels in print, and my reputation matters to me!

2) Follow the prompts to set it up. (The defaults are fine)
3) Locate the Spacejock Software entry in your start menu. Click yWriter8 icon to run the program.

You can run my programs from a memory stick. See How to run your applications from a thumb drive for more info