The Doodle Project

Software

Software we build and run.

A PDF editor, a signing service, parish software and a family chore tracker. We make tools we want to use, and we describe them plainly.

Meet TDPdfMeet Antiphona

Flagships

Our two flagships

Our flagship

TDPdf

Edit, redact and sign PDFs on Windows. Free.

Fix a typo, fill in a form, black out a name or get a contract signed. TDPdf does it without an account, without admin rights and without tracking.

  • Free and open source, for Windows 10 and 11
  • Redaction removes the text and images underneath, then checks the saved file
  • Send a document for signature, or sign it yourself
  • Inline text editing, forms, OCR, merge and split
  • One file to install, with silent install for IT teams
Get TDPdfSee the source

TDPdf began as a fork of KillerPDF and is kept by The Doodle Project, LLC Read how we credit the original.

Our flagship

Antiphona

Parish software for Catholic parishes.

Families register, pay, sign up and stay in touch. Staff run faith formation, events, giving and more from one place.

  • Families register, pay and sign up in one place
  • Faith formation, OCIA, events, giving and payments for staff
  • Volunteer sign-up, forms, help requests and communications
  • Guides for staff and families on the docs site
Visit AntiphonaRead the guides

More from us

The rest of the family

Available

TDPdf Sign

Document signing behind TDPdf.

Our own copy of the open source Documenso signing service. Signed PDFs carry a trusted certificate and a timestamp, so they keep validating in Adobe Acrobat and other readers.

Visit TDPdf Sign

Available by invitation

Chores

A chore and points tracker for your household.

Kids check off chores, a parent approves, and points add up to a balance that buys rewards. It installs as an app on a phone or a school Chromebook. A parent invites each new household, and there is no billing.

Visit Chores

In development

MassCast

Liturgical projection for Catholic parishes.

A parish loads its weekly worship aid, or writes the Mass in the tool. Volunteers move through the cues from any device, and wall-mounted boards show each cue. MassCast is not released yet. We are building it with parishes in mind, and we will say here when it opens.

Questions about MassCast? Write to us.

Want to use one?

Tell us what you need, and we will point you to the right one.

Email usRead about open source