A file containing data used to alter, enhance, or extend the operation of R:BASE. R:BASE Plugins are made available through different means. Some Plugins are included with the purchase of R:BASE. These files have the .rbl or .rbm file extension. Other Plugins are included with R:BASE Technologies, Inc. add on products such as R:Charts, RBZip, and R:Spell Checker.
Many other software products use plugins. This technology is based on API, which is declared by the program creator. A sample of products which use plugins include: WinAMP, Adobe Photoshop, ACDSee, etc. Support for plugins mean that the computer programmers can enhance and improve product possibilities using programing languages such as C/C++, Pascal, Delphi, and Basic.