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The Freebie Zone

Great Tools. Zero Dollars. Seriously.

Who said great software has to come with a price tag? We’ve created free tools to make your day easier. No complicated setup. No unnecessary hassle. Just download and get going.

Get PDF Sign Free Get CertBot Free
WindowsNo account required$0, no subscription

Available now

Free Windows tools, ready to download today. Click through for the full product page.

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We’re Just Getting Started!

We’re building even more free tools to make your workday easier. Check back to see what drops next.

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Three steps. Zero dollars.

No sign-up wall, no trial timer, no credit card.

  1. 1. Download

    Grab the free Windows installer. No form, no account.

  2. 2. Install

    Run the installer on your Windows PC or server.

  3. 3. Get going

    Sign PDFs or renew certificates — that’s it.

Office PDF Sign

Fill, sign and flatten PDFs on your own computer.

  • Type, date, checkmark and sign, then save a flattened copy
  • Edit the document’s own text instead of covering it over
  • Prepare fields for someone else to fill and sign
  • No account, no telemetry; the only network it uses is the update feed
Free download for Windows Full product page

Windows only. Latest version: 1.4.1.

CertBot

Free Let’s Encrypt certificates for IIS, renewed automatically.

  • Let’s Encrypt certificates for the sites on your IIS server
  • HTTP-01 or GoDaddy DNS-01 validation
  • Multiple sites and hostnames on one server
  • Automatic renewal, checked daily
Free download for Windows Full product page

Windows only. Latest version: 1.2.2.

Next drop

We’re Just Getting Started!

We’re building even more free tools to make your workday easier. Check back to see what drops next — new releases will show up right here with a “Just Dropped” tag.

Suggest a free tool

Quick answers

Are these tools really free?

Yes. Office PDF Sign and CertBot are free downloads for Windows. CertBot is free to download and free to run, with free automatic updates from Rubix Hub.

Do I need to create an account or fill out a form?

No. Click download and the installer comes straight from Rubix Hub. No contact form, no account.

What platforms are supported?

Both tools are for Windows. CertBot works with the sites on your IIS server. A Mac version of Office PDF Sign is not published.

How do updates work?

Both apps get updates from Rubix Hub. Office PDF Sign has Check for Updates inside the app; CertBot updates arrive automatically.

Like what you got for free?

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