If you are developing software without a repository manager you are likely missing a number of opportunities to reduce some pretty obvious inefficiencies. If everyone on your team has to contact the Central Repository to download components you are missing out on some simple gains in speed and efficiency. If you don't have an internal location to deploy components you are forced to share binary components using half-measures and compromises such as storing them in source control.
Stop developing in the Dark Ages, read this documentation, and start using a repository manager. Trust us, once you start using Nexus Repository Manager, you will wonder how you ever functioned without it.