Furthermore, critics did not see ZETA as real advancement of BeOS, but rather as an unfinished and buggy operating system loaded with third party applications that were either obsolete, unsupported, or non-functional. This was particularly true in the initial releases of ZETA, and it was in clear conflict with the attention to detail that BeOS used to stand for, disappointing the BeOS community who at one point had high expectations for ZETA. While yellowTAB did clean up the selection of bundled applications in following versions, ZETA remains somewhat unstable when compared to other modern desktop operating systems.