The best replacement for coda is espresso.

The best alternatives to coda are rated as following:
★★★★★  espresso
★★★★★  dreamweaver
★★★★  textmate
★★★  bbedit
★★★  sublime
★★  codetta
★★  aptana
★  flux
★  brackets
★  phpstorm
★  textwrangler
★  netbeans
★  codekit
★  dreamweaver cs5
★  transmit
★  rapidweaver
★  cssedit
  al anon
  espresso 2
  allegro
  textastic
  dc al coda
  coffeecup
  epilogue
  expresso
  coda
  nfs
  al-anon
  trek fx
  webstorm
  koder
  alanon
  giant escape
  espresso mac

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

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



Google Trends

Scale is based on the average worldwide traffic of coda in all years. Click on graph for more.
coda
espresso
dreamweaver