The best replacement for commas is semicolons.

The best alternatives to commas are rated as following:
★★★★★  semicolons
★★★★  dashes
★★  periods
★★  colons
★  brackets
★  commas
★  parentheses
★  hyphens
★  full stops
  quotation marks
  semi colons

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

Other search terms related to commas and their ratings are:
★★★★★ dates
★★★★★ adjectives
★★★ however
★★★ appositives
★★ conjunctions
★★ quotations
★★ as well as
★★ quotation marks
★★ interrupters
★ which
★ such as
★ therefore
introductory phrases
prepositional phrases
coordinating conjunctions
You have in mind a companion for commas and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of commas in all years. Click on graph for more.
commas
semicolons
dashes