1. Old Dos Programs
2. Search The Public Domain

It's amazing how far computer games have progressed. But have you ever felt the urge to take a trip back in time and relive the games of the eighties and nineties? Well now you can!

Astronomy Software: Public Domain, Freeware, and Shareware. Sky & Telescope's BASIC Program Listings. (DOS) Image Stacker and AstroImager by Keith Wiley (MacOS).

Shareware, freeware, and public domain are software categories defined by how programs may be distributed, copied, used, and modified. Shareware software is distributed at low (or sometimes no) cost, but usually requires payment and registration for full legal use. Copies are distributed on a trial basis. You'll love this vast collection of astronomy software that includes free or inexpensive computer programs to aid your observing and exploring of the sky. Astronomy Software: Public Domain. Simtel.net archive An archive of the Simtel.net LARGE well known collection of DOS freeware, public domain and shareware programs; DOS Games Listing of many FREE Games (with descriptions) for DOS! Recently redesigned and with the ability to play many DOS games in your (modern) browser.

We have 792 DOS games in our archive that can be downloaded for free. These games are shareware, freeware, playable demos and full versions which are released as freeware or into the public domain. Our downloads don't contain any adware, malware, viruses or other unwanted software.

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Recently added DOS games

Vanguard Ace: Vertical Madness

Tailchaser

Ford Simulator III

Kaos

The Kingdom of Syree III: The Depths of Hell

Old Dos Programs

Search The Public Domain

Dead of Night

Mel Odius Goes Six String Searchin'

Revolt of Don's Knights

Jurassic War

The Hidden Below

Ford Simulator III

Public domain is a legal term that describes a work or product that is not protected by copyright. The copyright protection an item in the public domain may have 1) expired, 2) been released by the author, or 3) never existed in the first place. Public domain items are publicly available and can be freely accessed and redistributed.

Many different items can be labeled as 'public domain.' For example, books, speeches, poems, artwork, songs, and videos can all be made freely available to the public. In the computing world, 'public domain' is often used to refer to software programs that are offered to the public without copyright restrictions.

Public domain software is similar to open source software, in which the source code of a program is made publicly available. However, open source software, while freely distributed, still retains the original developer's copyright. This means the developer can change the redistribution policy at any time. Public domain software is also similar to freeware, which refers to software offered at no charge. However, like open source software, freeware programs are still protected by copyright. Therefore, users may not redistribute the software unless they receive permission from the original developer.

Since there are many similarities between freeware, open source, and public domain software, the terms are often used interchangeably. However, there are important legal differences between the licenses, so it is important for developers to choose the correct license when releasing software programs. Public domain software, which offers the least legal protection, is most often published by individuals or educational institutions, rather than companies. When software is offered as public domain, it is often labeled 'PD' or may include a Public Domain Mark (PDM).

Updated: September 25, 2012