The best replacement for wirecast is xsplit.

The best alternatives to wirecast are rated as following:
★★★★★  xsplit
★★★★  tricaster
★★★★  obs
★★★  ustream
★★★  vmix
★★★  wirecast pro
★★★  vidblaster
★★  boinxtv
★★  wirecast for youtube
★  camtwist
★  atem
  adobe visual communicator

Your alternative for wirecast is not listed? Suggest!
Speaking about wirecast, one probably shouldn't forget about elgato.

Other search terms related to wirecast and their ratings are:
★★★★★ elgato
★★★★ atem television studio
★★★ wowza
★ teradek cube
★ ustream settings
livestream
You have in mind a companion for wirecast and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of wirecast in all years. Click on graph for more.
wirecast
xsplit
tricaster