The best replacement for encapsulation is abstraction.

The best alternatives to encapsulation are rated as following:
★★★★★  abstraction
★★★★  information hiding
★★★  data hiding
★★  inheritance
★★  encryption
★★  polymorphism
★  composition
★  data abstraction
★  removal
  vapor barrier
  tunneling
  abstraction java
  method overriding

Your alternative for encapsulation is not listed? Suggest!
Speaking about encapsulation, one probably shouldn't forget about data hiding.

Other search terms related to encapsulation and their ratings are:
★★★★★ data hiding
You have in mind a companion for encapsulation and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of encapsulation in all years. Click on graph for more.
encapsulation
abstraction
information hiding