The phrase "on the beam" is often used to describe something that is working well or functioning correctly. When looking for synonyms, one could use the term "on track" as a suitable replacement. Other similar expressions could include "in line with," "in sync with," or "on target." These phrases imply that something is progressing smoothly and are often used in a professional setting. Alternatively, one might choose to use slang terms such as "on point" or "on fleek" to convey the same sense of something being on track or working effectively. Overall, there are numerous synonyms available for the phrase "on the beam" which offer a range of options and styles to suit different contexts and audiences.