One free Windows program a day throughout September. Some are normally paid; others are special giveaway editions. 
It’s COMPUTER BILD’s official 30th-anniversary download calendar. Open a door, see the program, and check its license terms before installing.
What the calendar gives you
 Dates |
September 1–30, 2026 |
 Giveaways |
One featured program per day |
 Platform |
Windows software |
 Price |
Free to claim |
 Activation |
Depends on the program |
 Source |
Official COMPUTER BILD calendar |
The selection covers different needs, including photo tools, backup, security, and PC utilities. You can click earlier doors too; check each program’s page to see whether its download and activation are still available.
The detail that matters more than “free”
“Full version” does not automatically mean a lifetime license or every feature in the latest paid edition. One giveaway might provide a one-year license; another might be a special COMPUTER BILD edition.
Before claiming something, check the individual page for:
License length — does it expire?- Activation steps — key, product ID, or publisher account?
Included features — is it a special edition?
Future upgrades — are they included?
How to claim a program
- Open the official calendar.
- Select an available date and read that program’s page.
- Download through COMPUTER BILD or the publisher link it provides, then follow that program’s activation instructions.
If you receive a license key or confirmation email, save it somewhere you can find it later.
Claims to ignore
“All 30 are paid programs made free forever” — the software and license terms vary.- “One key unlocks the whole calendar” — each giveaway has its own instructions.
- “Missing a day means its page is gone” — earlier doors may still open, though a working download does not guarantee activation is still available.
Summary 
Bookmark the COMPUTER BILD calendar, check it during September, and claim the programs you’ll actually use. The useful part is the individual license terms, not the number 30.
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