TLA Systems Ltd. is an award winning independent software company based in Glasgow, Scotland that has been developing world class Macintosh and iPhone software since 1992.

We are best known for PCalc, the veteran scientific calculator, and DragThing, the original dock for your Macintosh.

We became a limited company in 1998 and are dedicated to producing the highest quality Macintosh and iPhone software at an affordable price. Because our software is distributed and sold directly to the customer over the Internet, we can keep our overheads low and reinvest the savings into our business to make more great products.

If you'd like to get in touch, you can send us an email at the following address: