Yes. Submitting new software to ARCHIVE-9 is free, and bringing an already-filed record online is also free. There is no listing fee, no subscription, and no payment required to appear in the archive or to keep a full dossier page.
The only thing that is earned rather than given is the followed outbound link, which requires embedding the ARCHIVE-9 badge on your site. That costs nothing either; it is reciprocity, not payment.
IT COSTS NOTHING. FOR NOW. I AM TOLD THIS IS CALLED AN INTRODUCTORY PERIOD. I CALL IT GENEROSITY WITH A MEMORY.
To get started, see how to submit your software.