The best replacement for cucumber is zucchini.

The best alternatives to cucumber are rated as following:
★★★★★  zucchini
★★★  pickle
★★  rspec
★★  jbehave
★★  squash
★  fitnesse
★  selenium
★  capybara
★  specflow
★  steak
★  spock
★  cucumber
★  concordion
★  junit
★  regular cucumber
★  english cucumber
★  watir
  lettuce
  watermelon
  banana
  behat
  lemon cucumber
  carrot
  bitter apple
  celery
  water melon
  pickles
  webrat
  cucumbers
  qtp

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

Other search terms related to cucumber and their ratings are:
★★★★★ vinegar
★ water
★ selenium webdriver
★ rspec
★ rice wine vinegar
★ jruby
yogurt recipe
watir
selenium
testng
sour cream and dill
You have in mind a companion for cucumber and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cucumber in all years. Click on graph for more.
cucumber
zucchini
pickle