One particularly important addition to the lineup of third-party add-ons was the eventual release of dBASE compilers, which would take a dBASE project and compile it and link it into a stand-alone runnable program. This not only made the resulting project easy to distribute to end users, but it did not require dBASE to be installed on that machine. These compilers essentially replaced Ashton-Tate's own solution to this problem, a $395 per-machine "runtime" copy of dBASE, and thereby removed one source of their income. The most successful such compiler was Clipper, from Nantucket Software. Eventually a number of these were developed into full-blown dBASE clones.