- validatable 31 This fork is no longer maintained. One active fork is jnunemaker's.
- ews-api 15 Exchange Web Services API. It doesn't use soap4r.
- rstack 7 kinda like hoe and newgem but more for private gems
- rubygems-proxy_server 4 Don't use this. Maybe check out gemslicer.
- smallduration 3 A duration object that handles hours, minutes, seconds and fractions.