The best replacement for lock is mage.

The best alternatives to lock are rated as following:
★★★★★  mage
★★★★  float
★★  mutex
★★  saline lock
★★  monitor
★★  hunter
★★  latch
★★  heparin lock
★★  identity guard
★  float today
★  master lock
★  reentrantlock
★  bernina
★  synchronized java
★  semaphore java
★  shadow priest
★  30 day rate lock
★  luer slip
★  unlock iphone
★  log off
★  cylindrical lock
★  readerwriterlockslim
★  deadlock
★  float mortgage rate
★  condition variable
★  shock
  semaphore
  scent blocker
  mutex c#
  float mortgage rate today
  lockback
  6 bolt
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  janome
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  monitor.enter
  truecrypt
  classroom lock
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  hobbes
  not to lock
  mortise lock
  side lock
  double cylinder
  medeco
  u lock
  trusted id
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  liner lock
  frame lock
  lego
  4wd low
  dead lock
  monitor c
  pedal lock
  chain
  disc brakes
  retrax
  deadbolt
  ongard

Your alternative for lock is not listed? Suggest!
Speaking about lock, one probably shouldn't forget about circle iphone.

Other search terms related to lock and their ratings are:
★★★★★ circle iphone
★★ pin
★★ software
★ chain
★ letters
★ jailbreak
You have in mind a companion for lock and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of lock in all years. Click on graph for more.
lock
mage
float